Network Engineer Interview Questions

Search

Network engineer interview questions 1. User(s) are complaining of delays when using the network. What would you do? 2. What are some of the problems associated with operating a switched LAN? 3. Name some of the ways of combining TCP/IP traffic and SNA traffic over the same link. 4. What sort of cabling is suitable for Fast Ethernet protocols? 5. What is a Class D IP address? 6. Why do I sometimes lose a server’s address when using more than one server? 7. What is Firewall? 8. How do I monitor the activity of sockets? 9. How would I put my socket in non-blocking mode? 10. What are RAW sockets? 11. What is the role of TCP protocol and IP protocol. 12. What is UDP? 13. How can I make my server a daemon? 14. How should I choose a port number for my server? 15. Layers in TCP/IP 16. How can I be sure that a UDP message is received? 17. How to get IP header of a UDP message 18. Writing UDP/SOCK_DGRAM applications 19. How many bytes in an IPX network address? 20. What is the difference between MUTEX and Semaphore? 21. What is priority inversion? 22. Different Solutions to dining philosophers problem. 23. What is a message queue? 24. Questions on Shared Memory. 25. What is DHCP? 26. Working of ping, telnet, gopher. 27. Can I connect two computers to internet using same line ? Posted in: Networking |

50 Responses to “Network engineer interview questions” 1. Vivek Kumar Says: November 26th, 2005 at 12:32 am

5. Ip Address Ranges: Class A: 0-126. 127 is a Broadcast

Class B: 128-191 Class C: 192-223 Class D: 224-239 Class E: 240-255. 2. Vivek Kumar Says: November 26th, 2005 at 12:45 am

Ques5. Ip Address Ranges: Class A: 0-126. : For about >256 Subnets and >16777214 hosts per subnet 127.0.0.1: For Proper Configuraions of TCP/IP. Class B: 128-191: for about >65536 Subnets and >65534 hosts per subnet Class C: 192-223: For about >16777214 networks and 254 hosts per subnet Class D: 224-239 : these addressess are for Scientific researches .. Class E: 240-255. : these are kept for Future Use 3. Vivek Kumar Says: November 26th, 2005 at 1:01 am

Ques 7: what is a Firewall: Firewalls are of two types: -Hardware Firewall -Software Firewall. Firewall in simple manner is bascially the utility to provide the security over the network. These are the security measures that prevents the network’s in and out traffic to pass through the specific Security filters so that the unwanted and unsecure data can be stopped from entering into the network.. further… as a security measure it also depends on the network designer and implementer that how to use a Firewall mean to say the security measures like how to present the content filtering and Url filtering which type of firewall should be used and where to put it.. 4. Vivek Kumar Says: November 26th, 2005 at 1:48 am

Ques 11. Well.. firt of all one should know what a protocol actually means: A Protocol is bascially set of rules designed and developed for the internetwork or can say intranetwork Communications. the need of Tcp had been rised in early years when like.. IBM Mainframe were not able to Communicate with the Burroughs mainframe.. means if you wish to connect 2 or more computers they should be same with everything from manufacturer to designer and implementer…then TCP imerged as a solution-for-ever.. EARLIER it was NCP( Network Control Protocal) but later it refined into TCP( Transmission Control Protocol) and IP(Internet Protocol)on jan.1,1983.. Some General roles of TCP/IP are: 1. Independence from particular vendor or network. 2. very low data overhead

3. good failure recovery. and if the thinghs are taken seprately.. then TCP is bascially responsible for proper data transmission by assuring data integrity it is a connection oriented protocol that follows the under scenerio 1. Handshaking. 2. Packect Sequencing 3. Flow Control. 4. Error handling. IP : Since the data to be sent must be put somewhere the IP works here .. the required data is packaged in an IP packet. 5. Subir Sinha Says: January 6th, 2006 at 7:10 am

ques11: TCP (Transmission Control Protocol) is a set of rules (protocol) used along with the Internet Protocol (IP) to send data in the form of message units between computers over the Internet. While IP takes care of handling the actual delivery of the data, TCP takes care of keeping track of the individual units of data (called packets) that a message is divided into for efficient routing through the Internet. 6. vinod gupta Says: March 12th, 2006 at 5:54 am

7 Application 6 Presentation Upper Layers 5 Session 4 Transport 3 Network 2 Data Link Lower Layers 1 Physical The application, presentation, and session layers are all application-oriented in that they are responsible for presenting the application interface to the user. All three are independent of the layers below them and are totally oblivious to the means by which data gets to the application. These three layers are called the upper layers. The lower four layers deal with the transmission of data, covering the packaging, routing, verification, and transmission of each data group. The lower layers don’t worry about the type of data they receive or send to the application, but deal simply with the task of sending it. They don’t differentiate between the different applications in any way. The following sections explain each layer to help you understand the architecture of the OSI-RM (and later contrast it with the architecture of TCP/IP). The Application Layer

The application layer is the end-user interface to the OSI system. It is where the applications, such as electronic mail, USENET news readers, or database display modules, reside. The application layer’s task is to display received information and send the user’s new data to the lower layers. In distributed applications, such as client/server systems, the application layer is where the client application resides. It communicates through the lower layers to the server. The Presentation Layer The presentation layer’s task is to isolate the lower layers from the application’s data format. It converts the data from the application into a common format, often called the canonical representation. The presentation layer processes machinedependent data from the application layer into a machine-independent format for the lower layers. The presentation layer is where file formats and even character formats (ASCII and EBCDIC, for example) are lost. The conversion from the application data format takes place through a “common network programming language” (as it is called in the OSI Reference Model documents) that has a structured format. The presentation layer does the reverse for incoming data. It is converted from the common format into application-specific formats, based on the type of application the machine has instructions for. If the data comes in without reformatting instructions, the information might not be assembled in the correct manner for the user’s application. The Session Layer The session layer organizes and synchronizes the exchange of data between application processes. It works with the application layer to provide simple data sets called synchronization points that let an application know how the transmission and reception of data are progressing. In simplified terms, the session layer can be thought of as a timing and flow control layer. The session layer is involved in coordinating communications between different applications, letting each know the status of the other. An error in one application (whether on the same machine or across the country) is handled by the session layer to let the receiving application know that the error has occurred. The session layer can resynchronize applications that are currently connected to each other. This can be necessary when communications are temporarily interrupted, or when an error has occurred that results in loss of data. The Transport Layer The transport layer, as its name suggests, is designed to provide the “transparent transfer of data from a source end open system to a destination end open system,” according to the OSI Reference Model. The transport layer establishes, maintains, and terminates communications between two machines.

The transport layer is responsible for ensuring that data sent matches the data received. This verification role is important in ensuring that data is correctly sent, with a resend if an error was detected. The transport layer manages the sending of data, determining its order and its priority. The Network Layer The network layer provides the physical routing of the data, determining the path between the machines. The network layer handles all these routing issues, relieving the higher layers from this issue. The network layer examines the network topology to determine the best route to send a message, as well as figuring out relay systems. It is the only network layer that sends a message from source to target machine, managing other chunks of data that pass through the system on their way to another machine. The Data Link Layer The data link layer, according to the OSI reference paper, “provides for the control of the physical layer, and detects and possibly corrects errors that can occur.” In practicality, the data link layer is responsible for correcting transmission errors induced during transmission (as opposed to errors in the application data itself, which are handled in the transport layer). The data link layer is usually concerned with signal interference on the physical transmission media, whether through copper wire, fiber optic cable, or microwave. Interference is common, resulting from many sources, including cosmic rays and stray magnetic interference from other sources. The Physical Layer The physical layer is the lowest layer of the OSI model and deals with the “mechanical, electrical, functional, and procedural means” required for transmission of data, according to the OSI definition. This is really the wiring or other transmission form. When the OSI model was being developed, a lot of concern dealt with the lower two layers, because they are, in most cases, inseparable. The real world treats the data link layer and the physical layer as one combined layer, but the formal OSI definition stipulates different purposes for each. (TCP/IP includes the data link and physical layers as one layer, recognizing that the division is more academic than practical.) 7. Iraban Says: March 17th, 2006 at 10:29 am

Interviews Questions 1. Are all cacheless proxies DNS cacheful ? If so why ?

2. How does a ping work ? The exact mechanism. 3. How does a DHCP work ? When a pc with no Ip address just with an MAC addrress boots up , what are the steps that Happen till the time a Ip is given to the pc from a DHCP. 4. What happens if there are 2 DHCP servers in the network and both gets a message from 2 pcs booting at exactly the same moment of time. 8. Mike Says: March 27th, 2006 at 11:52 am

You guys would fail. lol. Class D networks are reserved for multicasting. someone asking the question isn’t interested in the IP range but what its used for. 9. hariom jindal Says: April 22nd, 2006 at 12:40 pm

how to change MAC Address.? ans you can change a mac address easly. go to the desktop>write click on the my computer icon>properties>device manager>Network Adapters> properties> advance>network address.. and then chnage the value. The value should be hexadecimal or 16 octat 10. hariom jindal Says: June 18th, 2006 at 2:28 pm

What is DHCP. ans…. DHCP is a protocol which is designe for Automatic Give the IP Address to DHCP client.. DHCP Assine the IP Address for few days Lease & capture the clients MAC address.. It is Updated version of BootP… 11. Indranil Banerjee Says: September 17th, 2006 at 12:59 pm

27. u can connect two computer using NAT wich use port forwarding method and proxy server same time on the same line .

26 ping ia process which use ICMP protocl error message which is encapsulated in a IP packets its calculate the round trip delay time by sending the packet sending time and subtract it from arrival time. the error messages are 1.destination unrecheable 2.hardware error. etc its also sets maximum hop value and after it becomes 0 the packets discarted Telnet is a application layer process of connection remote compter and local Area Network compter by specifing the ip address by a specific port, 25 DHCP is used for MAC address to IP mapping its support both static and dynamic mapping.Static mapping are done just like bootstrap and for dynamic mapping it have database of MAC and IP when a packet with a MAC comes ask for ip its check that assigne a dynamic IP fixed that for a specific time and then return that packet with that IP 26 In OS when an event done it stored on Message queues and and its relavent action are called then it executed and cleared message queue it’s tempurary buffer of a multitusking OS. 5.Class D ip are used for multitusking. that is 1 to many relation ship used with IGMP protocol for group managemnt. 6.TCP/IP has 4 layer 1.Applicatiotn 2.Transport 3.Internet 4.Netwok Access Foolish vinod said the OSI Layer 7. Firewall are the rules which are used for Passing traffic thats is packets in network layer and frame is datalink layer on a specific port it can be two type 1.Hardware 2.Software 11 TCP is a transport layer protocol sued for reliable delivery of segmented packets IP is network layer protocol used for end to end delivery of two nodes not reliable. 12. indranil Says: September 17th, 2006 at 1:01 pm

27. u can connect two computer using NAT wich use port forwarding method and proxy server same time on the same line . 26 ping ia process which use ICMP protocl error message which is encapsulated in a IP packets its calculate the round trip delay time by sending the packet sending time and subtract it from arrival time. the error messages are 1.destination

unrecheable 2.hardware error. etc its also sets maximum hop value and after it becomes 0 the packets discarted Telnet is a application layer process of connection remote compter and local Area Network compter by specifing the ip address by a specific port, 25 DHCP is used for MAC address to IP mapping its support both static and dynamic mapping.Static mapping are done just like bootstrap and for dynamic mapping it have database of MAC and IP when a packet with a MAC comes ask for ip its check that assigne a dynamic IP fixed that for a specific time and then return that packet with that IP 26 In OS when an event done it stored on Message queues and and its relavent action are called then it executed and cleared message queue it’s tempurary buffer of a multitusking OS. 5.Class D ip are used for multitusking. that is 1 to many relation ship used with IGMP protocol for group managemnt. 6.TCP/IP has 4 layer 1.Applicatiotn 2.Transport 3.Internet 4.Netwok Access Foolish vinod said the OSI Layer 7. Firewall are the rules which are used for Passing traffic thats is packets in network layer and frame is datalink layer on a specific port it can be two type 1.Hardware 2.Software 11 TCP is a transport layer protocol sued for reliable delivery of segmented packets IP is network layer protocol used for end to end delivery of two nodes not reliable. 13. pay Says: October 6th, 2006 at 9:43 am

Q1: User(s) are complaining of delays when using the network. What would you do? ANS: - get the user(s) to demonstrate the problem - determine how many other users are affected

- ensure desktop hardware and configuration is OK - trace all connections (they may be on another subnet) - commence some monitoring or diagnostics - determine problem (if there is one) - provide solution 14. Muhammad Ali Khan Says: November 5th, 2006 at 6:18 pm

11. TCP is a connection oriented protocol that provides reliable transfer of information by synchronization, error checking and sequencing of information to and from IP layer. IP layer is transport of TCP. It provides path determination and packet switching. IP layer uses ARP and RARP protocol to map IP to MAC address and MAC to IP address respectively, to determine network addresses. It is connectionless protocol that leaves all error checking functions on upper layer. 12. UDP is a connectionless protocol that do not provide reliable transfer of information and is fast in nature as compare to TCP. This disadvantage on other hand is suitable for applications like video and voice. 15. Rich Says: November 26th, 2006 at 8:55 am

5. reserved for Multicast.. correct… I never really understood this properly until working with OSPF. You can try memorising the table if you like but it’ll stick better if you get some understanding on why, and what different addresses are used for. If you want a good undertanding of a decent routing protocol, get your head round OSPF. It’s nice, easy and used a lot plus you’ll understand multicasting in the process… For example in OSPF - 224.0.0.5 is used for multicasting routing information and is address you should always know about. I’ve been asked about this in EVERY interview I’ve had in networks. 16. hariom jindal Says: December 11th, 2006 at 6:58 am

Active Directory.

Active Directory is a administative tool which is use to manage and administer the domain users, computers, network clients centrelize. older name of Active Directory called NTDS( NT Directory Service). 17. hariom jindal Says: December 11th, 2006 at 7:01 am

What is a Page file. Page file is a vertual memory of the operating system & work as Physical RAM. It encreses the system performance & working. 18. hariom jindal Says: December 11th, 2006 at 7:04 am

What is a Printer. Printer is a Hardware Device which is use to take hard copy of any text or data from system.. we have three types of printer.. 1. Dot Matrix 2. Lazer 3. Inkjet 19. hariom jindal Says: December 16th, 2006 at 11:51 am

What is WDS mode in AP? Ans.. WDS stands for Wireless Distributed System, & work as Bridging Technology. In WDS mode Access Point can communicate with Wi-Fi Access Points only does not support Wireless Cliens. If we want communicate 4 AP to each other so we should configure one AP as WDS mode. In this mode WSD AP requires Remote AP mac address so you have to type other APs MAC address one by one. and Configure AP in AP with WDS mode with Remote WDS mac address.. with this setting u can make Wireless LAN with out any ethernet wire.

try and if u have any problem contact me at: [email protected] 20. hariom jindal Says: December 21st, 2006 at 12:35 pm

Q. Can I connect two computers to internet using same line. Ans.. Yes, we can connect two or more system using many types of mathodes.. 1. Remote Help Invitations.. if you have high or medium speed internet connection you can access the system.. 2. VPN.. using the Virtual Private Network this is technology which is use to make virtual network between any remote location. VPN make a tunnel type connection for fast & secure communication. 3. Using third party software we have many type of VPN softwares. 21. hariom jindal Says: December 21st, 2006 at 12:43 pm

Question. User(s) are complaining of delays when using the network. What would you do? Ans. Network slow problem create by many reasions like.. Spyware, Virus, Spool Virus, NetBios, or may be any machine infected with a Virus or Worm.. This problem may be genrate by defected HUB/Switch or Carbon in Jack or female RJ45 connector. so you have update your antivirus or firewall software or desible the NetBios in Wins Configurations. thanks 22. Raja Said Says: December 30th, 2006 at 4:02 am

Q.25 What is DHCP? Dynamic Host Configuration Protocol is a network layer Protocol that enables a DHCP Server and Assign IP Address Automatically on Individual DHCP Client 23. Raja Says: January 2nd, 2007 at 12:39 am

Q. what is firewall? Firewall are two types 1. Hardware Device 2. Software Firewall Firewall work as a Filter whichever connect to broadband and router before home Network and stop all virus coming form Internet 24. Hari Om Jindal Says: January 23rd, 2007 at 10:36 am

Que. How ISA Server Works ? Ans.. ISA is Software Firewal & Internet Soloution for small & large network. ISA server blocks Inboud traffic as well as Outbound traffic. It is a multitasking firewall server it provides NAT (Natwork Address Translation)& Web Proxy etc.. ISA server provides SecureVPN for connect Remote Clients or Remote Location… 25. Hariom Jindal Says: February 22nd, 2007 at 5:07 pm

Que: What is a Domain Controller? Ans.Domain is a Security boundery which is use to make secure or private network from inside to outsite. Domain provide better administration control over the network object. 26. Naveed Nezam Says: February 23rd, 2007 at 2:47 am

27- Can I connect two computers to internet using same line ? There are different methods to share one internet connection on multipe numbers of computer. 1- ICS(Internet Connection Sharing) In this method you can just enable Internet Connection Sharing check on your gateway.. The limitation of ICS is you must have 192.168.X.X IP addressing scheme on your network. another limitation of ICS is it can support upto 15 Computer(approx.. dont remember exact figure).

2-NAT NAT or NATING basic function is to convert private IP to Public IP and vice versa. It work same like ICS but have some enhanced features and can used for large number of client computers. * NAT has also option of Firewall. * No limitation of IP Scheme..it also provide dynamic IP addressing * Also have a feature of Server Publishing *Cannot cache 3- Proxy Servers (e.g Microsoft ISA Server) Fully enhanced product which provide Internet sharing , Firewall(Fully featured ) and Caching. 27. Mohsin khan Says: February 26th, 2007 at 8:46 am

7. FireWall is nothing but it is used to avoid the unwanted trafic or unauthorised entry. The Firewall has 2 types 1. Hardware & 2.Software. Now the most familiar used firewall is PIX from the make of cisco. and other firewalls like nokia and so on.. 28. pradeep kumar Says: March 26th, 2007 at 7:27 am

please tell me how we can configure DHCP server?? 29. Gaurav Says: April 25th, 2007 at 9:53 am

TCP/IP is a two-way communication between the client and the server and it is a reliable and there is a confirmation regarding reaching the message to the destination. It is like a phone call. UDP is a one-way communication only between the client and the server and it is not a reliable and there is no confirmation regarding reaching the message to the destination. 30. syed khalid Says: May 13th, 2007 at 3:45 am

when u want to know about understanding the nature of network then first of all u should be concentrate on OSI MODEL osi model have 7 layers and every layer perform unique task: 1 APPLICATION LAYER 2 PRESENTATION LAYER 3 SESSION LAYER

4 TRANSPORT LAYER 5 NETWORK LAYER 6 DATA LINK LAYER 7 PHYSICAL LAYER BUT NETWORK WORK ON LAYER 7 -1 THANKS SEE YOU ANY TIME WITH LOTS OF FUNDAS 31. Ahamed Harooon Says: May 15th, 2007 at 2:19 pm

DHCP stands for “Dynamic Host Configuration Protocol DHCP’s purpose is to enable individual computers on an IP network to extract their configurations from a server (the ‘DHCP server’) or servers, in particular, servers that have no exact information about the individual computers until they request the information. The overall purpose of this is to reduce the work necessary to administer a large IP network. The most significant piece of information distributed in this manner is the IP address. 32. Nirmala Says: May 17th, 2007 at 11:46 am

2.What are some of the problems associated with operating a switched LAN? Ans: A switched LAN (Local Area Network) may use a Gigabit Ethernet switch that includes different ports connected to PCs and to layer 3 routers. The routers connected to different switch ports can not immediately identify failures either of other routers or of the ports and links by which they are connected to the switch. The routers currently have to rely on slow timeout mechanisms, such as missed hello packets, to detect failures on other links connected to the switch. Thus, the time required to detect failures can and often does dominate the time required for a routing algorithm to determine a new network topology around a detected failure (convergence time). 33. dharmender yadav Says: May 30th, 2007 at 11:53 pm

5.Class D: 224-239 its Class D - Used for multicasts, Class D is slightly different from the first three classes. It has a first bit value of 1, second bit value of 1, third bit value of 1 and fourth bit value of 0. The other 28 bits are used to identify the group of computers the multicast message is intended fo 34. Mike Mountrakis Says: June 14th, 2007 at 5:23 pm

Q 7 How do I monitor the activity of sockets? In any POSIX (UNIX like system ) you can monitor the ports and their state with netstat command. Try: $netstat and this will give you a list of all opened sockets to the associated ports for TCP/UDP/RAW protocols. Q8 How would I put my socket in non-blocking mode? If you choose to open a socket in UDP, the socket is asynchronous, thus nonblocking. Q9 What are RAW sockets? Those sockets bypass the transport layer and talk directly to network layer, in other words they cannot be categorized as UDP/TCP. Normally, in RAW sockets e have to build our own IP header to override values that IP would place into certain header fields (use IP_HDRINCL socket option when opening socket descriptor). Normally we use this kind of sockets for two reasons: a. Implement custom transport protocol b. Pass raw streaming through the network. Michael Mountrakis [email protected] 35. Mike Mountrakis Says: June 14th, 2007 at 5:37 pm

Q17 How to get IP header of a UDP message If you want to do it for monitoring, use Ethereal If you want to do it within your code, use pcap (Packet Capturing Library) that comes with TCPDump distribution. Q20 What is the difference between MUTEX and Semaphore? A MUTEX is a lock. You can place a MUTEX Lock on a resource among processes/threads in order to lock it. When MUTEX is released, the resource is also released. A Semaphore is a signal raiser, or a token. When you wait for a MUTEX to be released, you might need to listen to a specific semaphore caused by the MUTEX release. Q21 What is priority inversion? Rearrange in opposite order the scheduler’s priority list.

Q22 Different Solutions to dining philosophers problem. Read “UNIX Network Programming” V1 by R. Stevens and “A Book on C By I. Poll A. Kelly” There are some excellent solutions over there Michael Mountrakis http://www.illumine.gr 36. Hariom Jindal Says: June 29th, 2007 at 12:17 am

Installing, Upgrading and Erase the software using RPM RPM (Redhat Package Manager) RPM package manager is a tool which is use to install, upgrade and removes the rpm packages. RPM is develop by redhat and support many linux distirbutions like Fedora Project, Redhat Enterprise Linux, CentOs, Mendriva and othrs. RPM only supports rpm file. Using RPM command with many functions. #rpm –q for query a packages -a for query with all rpms -V for query with varify the packge #rpm –i for install a rpm package -h for display with hash -v for verbose #rpm –u for upgrade the module #rpm –e for erase the module Some examples:#rpm –ivh dhcp-3.0.1-12_EL 37. prakash Says: July 7th, 2007 at 4:09 am

User(s) are complaining of delays when using the network. What would you do

38. mukesh Says: October 10th, 2007 at 5:31 am

how do i enable or dlsable my usb port? 39. Leela Says: October 19th, 2007 at 9:14 am

1.How to take the bios backup? 2.How to disable the ports (usb,com and serial ports)? 3.Difference between cold booting and warm booting? 4.Explain Dr.Watson? 40. Jayshankar Says: December 15th, 2007 at 7:19 am

1) How do BGP works in a network? 2) What is STM? 41. Harry Says: December 17th, 2007 at 4:04 am

Domain Controllers in a network can be of 2 sub types: PDC (Primary domain controller) and BDC (Backup Domain Controller). PDC governs the other network clients and resource sharing/scheduling can be easily done. All BDCs can be configured and monitored using PDC. From BDC clients, using a proxy on PDC, one can access the internet facilities. 42. Abhii Says: January 2nd, 2008 at 10:54 am

chk the link : Introduction to the Border Gateway Protocol (BGP) http://www.academ.com/nanog/feb1997/BGPTutorial/index.htm 43. bajrang lal Says: January 5th, 2008 at 3:53 am

What is filtering and why we are using? Well.. firt of all one should know what a protocol actually means how to change MAC Address.? What is NetBios? What is Caching.?

What type of virus? Spyware? how can infected Virus, Spool Virus, NetBios, or may be any machine infected with a Virus or Worm.. 44. brijesh kumar Says: May 10th, 2008 at 5:57 am

How to install and configure the DHCP service for iSCSI startup 1. Install the DHCP service on a computer on the local network where the iSCSI client computer will be starting. To do this, follow these steps:a. Click Start, point to Control Panel, and then click Add or Remove Programs. b. In the Add or Remove Programs dialog box, click Add/Remove Windows Components. c. In the Windows Components Wizard, click Networking Services in the Components list, and then click Details. d. In the Networking Services dialog box, click to select the Dynamic Host Configuration Protocol (DHCP) check box, and then click OK. e. In the Windows Components Wizard, click Next to start the Setup program. Insert the Windows Server 2003 CD into the computer’s CD drive or DVD drive if you are prompted to do this. Setup copies the DHCP server and tool files to the computer. f. When the Setup program is finished, click Finish. 45. brijesh kumar Says: May 10th, 2008 at 5:58 am

How to install and configure the DHCP service for iSCSI startup 1. Install the DHCP service on a computer on the local network where the iSCSI client computer will be starting. To do this, follow these steps:a. Click Start, point to Control Panel, and then click Add or Remove Programs. b. In the Add or Remove Programs dialog box, click Add/Remove Windows Components. c. In the Windows Components Wizard, click Networking Services in the Components list, and then click Details. d. In the Networking Services dialog box, click to select the Dynamic Host Configuration Protocol (DHCP) check box, and then click OK. e. In the Windows Components Wizard, click Next to start the Setup program. Insert the Windows Server 2003 CD into the computer’s CD drive or DVD drive if you are prompted to do this. Setup copies the DHCP server and tool files to the computer. f. When the Setup program is finished, click Finish 46. Kiran Says: September 15th, 2008 at 2:36 am

1. User(s) are complaining of delays when using the network. What would you do?

Ans: ==== 1. Check the traffic on the network (using DU Meter) when systems are idle 2. Check to ping the gateway 3. Check any unwanted softwares are installed on the system. 4. Update the Antivirus and Scan the system by unplugging network cable. 5. Check the status of Switch / Hub and cables. 47. Kiran Says: September 15th, 2008 at 2:39 am

What are RAW sockets? Ans: ==== provide direct access to the lower-layer protocols, for example, IP and the Internet Control Message Protocol (ICMP). 48. Kiran Says: September 15th, 2008 at 2:47 am

What are some of the problems associated with operating a switched LAN? Ans: ==== 1. Slow Data Traffic 2. Too many connections to server 3. Establish Que process 4. Loss of Data Sniffers are used to overcome these problems. Pls see the link for Switched LAN http://www.cisco.com/en/US/docs/internetworking/design/guide/nd2012.html#wp 3242 49. shankar.aj Says: October 7th, 2008 at 1:36 pm

How to take the bios backup? 50. Dhananjay Says: November 17th, 2008 at 2:30 pm

What is DHCP? DHCP stand for Dynamic Host configuration Protocal.DHCP servir provid the automatically TCP/ IP configuration of all of the claint in the network.

Leave a Reply Name (required) Mail (will not be published) (required) Website

Submit Comment

Send new comments to my e-mail

Search for answers Search

Custom Search

Recent interview questions o o o o o o o o o o o

40 student interview questions from NetApp Programming phone screen questions Linux network administrator questions Basic programming questions Linux command line Q&A SQL interview questions Java interview questions WinRunner question encyclopedia with answers Java threads question set Unix admin questions Hiring an IT guy - questions to ask

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

Amazon interview questions Sysadmin sample interview questions Yahoo! PHP interview questions Two men running 54 screening questions for Windows admin 10 questions on MySQL speed-up and optimizations Search engine marketer questions Topics for networking interview Simple C++ interview questions 12 general questions from an international company Windows admin interview questions (includes Vista) Linux application programming questions Python interview questions Some C++ interview questions Perl self-test questions 71 basic SQA / testing interview questions Basic shell scripting questions MySQL management interview questions DBA Interview Questions DAC interview questions x86 programming interview questions 8251 USART interview questions IC 8253 and IC 8259 interview questions Interview questions for a low-level programmer 8086 interview questions 25 SAP ABAP interview questions with no answers Google interview questions 30 simple Java questions SQL study notes Giant list of XML interview questions 50 JavaScript & AJAX interview questions EDS Visual Basic and SQL Server interview questions More than 200 CCNA questions Implement itoa Write a program that prints out its own source code 54 ASP and ASP.NET questions Generic interview questions to ponder 11 advanced MySQL questions Interview questions for a sysadmin Business Objects interview question QTP interview questions A dozen .NET questions 31 more MySQL questions 29 MySQL interview questions Simple FreeBSD questions

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

Apache interview questions Networking questions SAP ABAP frequent questions cheatsheet Web architect interview questions Generic interview questions Popular interview questions and answers Windows sysadmin interview questions Load testing interview questions Active Server Pages interview questions JavaScript interview questions Topics for a Unix sysadmin interview Hardware architecture interview questions Tricky C questions C++ developer interview 64 Java questions for any job interview MS SQL Server developer interview VB interview questions Database developer interview questions CPU engineer interview questions C questions for a hardware engineer VB interview questions Oracle on Linux/Unix questions Windows sysadmin interview questions SQA and testing frequently asked definitions C++ interview questions DBA Interview Questions - Part 10 DBA Interview Questions - Part 9 DBA Interview Questions - Part 8 DBA Interview Questions - Part 7 DBA Interview Questions - Part 6 DBA Interview Questions - Part 5 DBA Interview Questions - Part 4 DBA Interview Questions - Part 3 DBA Interview Questions - Part 2 DBA Interview Questions - Part 1 Refresher questions for a DBA interview Popular interview questions for DBA C++ notes for discussion Electronic engineer interview questions .NET WebDev interview questions - Part 3 .NET WebDev interview questions - Part 2 .NET WebDev interview questions - Part 1 Qualcomm hardware logic design questions Some general quickies Embedded firmware interview questions

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

.NET database dev questions Interview questions for .NET .NET WebDev and Web services questions Oracle interview questions ASP interview questions 10 bottles of pills PHP interview questions General Java Servlet questions Newbie Java questions Network developer interview questions Some PC and networking questions C and C++ questions for the interview Simple Java questions Questions to ask VB programmer Basic database interview quesitons Network engineer interview questions OS interview questions Typical interview questions Microsoft college recruitment questions 55 most frequently asked interview questions Windows Server and MS Exchange interview questions July contest winner Windows programming interview questions Interview questions for DBA Electrical engineer interview questions Sysadmin interview questions Network developer interview questions MySQL and general database interview questions Security interview questions for network admin Cisco-specific network engineer questions Large list of Intel interview questions Network administrator interview questions Solaris interview questions General UNIX interview questions Master list of Java interview questions - 115 questions Some VB interview questions SAP/ABAP interview questions Microsoft ASP.NET interview questions Tough interview questions on EJB EJB interview questions Cake puzzle Network engineer interview questions System integration questions Interview questions for Web developer position XML interview questions

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

Simple SAP ABAP questions Interview questions on C/C++ LoadRunner interview questions SAP ABAP interview questions Solaris interview questions Simple interview questions on Microsoft .NET Interview questions on WinRunner Questions to ask before getting hired Tough ASP.NET interview questions Questions to ask HR between the interviews WinRunner interview questions Good questions to ask during management interview Visual Basic interview questions eBay interview questions Questions to ask your future boss and colleagues .NET interview questions at Wipro Questions to ask during HR interview SAP Interview Questions Questions to ask when tech recruiter calls Typical Oracle questions Perl interview questions Open-ended .NET questions Interview at IBM Linux admin interview questions Basic .NET and ASP.NET interview questions PHP interview questions, Part 2 PHP interview questions, Part 1 Programming interview questions Bluetooth interview questions Jakarta struts questions Operating system questions 8086 interview questions 8085 microprocessor questions Interview questions for Web application developers ASP interview questions Web tester interview questions x86 interview questions Web designer interview questions Interview questions for Oracle database administrator MS SQL Server interview questions Most common interview questions Interview questions for C# developers Oracle interview questions C# .NET interview questions Advanced SAS interview questions

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

Interview questions for SAS expert Basic SAS interview questions C# developer interview questions SAS interview questions Java Web development interview questions EJB interview questions Good questions asked during Java interview JDBC and JSP interview questions Advanced EJB interview questions Junior Java programmer interview questions Core Java interview questions Java interview questions Basic Java interview questions J2EE EJB interview questions J2EE with EJB and Weblogic interview questions Interview questions for Business Objects developer Interview questions for Java junior developer position Data warehouse interview questions Java database interview questions Java Messaging System interview questions Common JSP interview questions SQA interview questions Java interview questions Java GUI designer interview questions SQL Server interview questions QA engineer interview questions Interview questions for network engineer Windows admin interview questions Network engineer/architect interview questions Wireless engineer interview questions J2EE interview questions Basic VB interview questions Basic Java servlet interview questions One hundred and twelve SQA interview questions Java AWT interview questions Load testing SQA interview questions Java applet interview questions Test automation interview questions Microsoft software development engineer in test (SDET) interview questions Microsoft MSN interview questions Servlet interview questions JDBC interview questions Interview questions for Linux admin C++ object-oriented questions

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

Oracle interview questions Oracle DBA interview questions Linux admin interview questions Software tester (SQA) interview questions ASP, ADO and IIS interview questions COM interview questions ASP.NET DataGrid questions Intel interview questions Java interview questions Software tester interview questions PL/SQL interview qiuestions C interview questions TechInterviews.com will pay you for your interview questions SQL interview questions Database admin interview questions JSP interview questions UML interview questions Medical management interview questions Java interview questions A hundred and more good Java interview questions Windows code security questions C++ gamedev interview questions .NET deployment questions IT management interview questions ASP.NET questions, part 2 .NET and COM interop questions COM/COM+ services and components in .NET .NET Windows services development questions Microsoft .NET Framework interview questions Windows 2000 administration questions CCNA/Cisco admin interview questions .NET Remoting questions and answers A+ and basic PC questions Good C++ Interview questions Telecommunications interview questions Mathematical puzzles for call center interviews .NET interview questions - Windows Forms C interview questions Hardware and software design questions Bioinformatics interview questions .NET Windows Forms basics General programming and IQ questions Java networking and algoritms interview questions Large collection of Java interview questions Java on Oracle interview questions

o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o o

Advanced C# interview questions Microsoft Win32 interview questions C# interview questions C# and .NET interview questions Microsoft platform and database technologies interview questions Java Swing interview questions .NET framework programming interview questions ASP.NET interview questions Microsoft Windows programming interview questions VB 6, COM, DCOM, Microsoft platform interview questions RF and radio engineering interview questions Microsoft interview questions Computer architecture and design interview questions Embedded systems interview questions Unix sysadmin interview questions SQL Server, DBA interview questions Networking and protocols interview questions Java interview questions Programming puzzles, riddles and interview problems Web and basic programming interview questions Java and Perl Web programming interview questions Networking interview questions Network programming interview questions Java software engineering interview questions C++ code examples for job interviews C++ interview questions, some Java Unix/Linux programming interview questions Unix/Linux administration interview questions Networking and Unix interview questions JSP interview questions Java and networking interview questions Advanced enterprise Java interview questions Advanced Java interview questions C++ object-oriented interview questions Java Web programming interview questions VLSI and hardware engineering interview questions C++ algorithms interview questions from Microsoft and IBM C++ object-oriented interview questions C++ networking questions Basic Java interview questions Database management interview questions C++ algorithm specific interview questions Basic C++ interview questions Hardware design interview questions Windows Server 2003 IIS and Scripting interview questions

o o o o o o o o

Windows Server 2003 Active Directory and Security questions Windows Server 2003 interview and certification questions C++ coding interview questions Advanced C++ and STL interview questions C++ programming on UNIX platforms Basic C++ and UNIX OS programming ASP.NET questions, part 1 Visual Basic

Ads •

Interview advice o o o o o o o o o o

5 questions that mean you’re not getting hired What’s the craziest thing your co-worker has done? How to survive a panel interview Most important part of the job interview How to conduct a phone interview 9 sites for interview prep Detailed description of Google interview process Stupid programming interviews 7 rules for resumes and interview 4 tips for talking during job interview

Amazon suggestions •

Code samples o o o o o o o o o o o o o o

Oracle: list of the system events Oracle: list of the running transactions Oracle: sql types Oracle: wait statisics by block class Using the clipboard in WSH Oracle: check the existance of logon/logoff triggers Unix shell: workaround for loop problem JavaScript: edit web page in browser Oracle: redo log switches by date JavaScript: Soundex implementation Dynamic image resizing in PHP Oracle: usage of the tablespaces (permanent and temporary) AppleScript: rotate mov file in QuickTime Pro Oracle: plan of the running query

Users' questions Shoutbox And Comment Box , So Easy But Yet So Hard? How To Post In Pages In Wordpress ? Could Someone Tell Me How To Burn Music On CD, And Is There A Specific Kind Of CD Or DVD Im Suppose To Use?  My Laptop Is Running Xp Home Can I Run Windows 98 From The Same Hard Drive How Can I Do This?  What Does A Scale Tool Look Like, And Where Can I Find It On Gimp. Is It Under Tools Or Layers.?  How Can I Record My DVDs Onto The Computer So I Can Work On It On MovieMaker?  Help Me In Writing An Introduction On A Graphic Design Company Makin A Site For A Fashion Designer?  Windows Media Player 11 Help Please.?  My Laptop (Dell Inspiron) Only Works When Its Plugged Into The Wall No Matter How Long I Charge It.?  HELP!!!! Why Wont Allegro Work?  Dreamweaver Help Please.... I Want To Upload My Site And I Need Some Help?  How Do You Make This On Paintshop?  Where Can I Download Free PHP &Amp; MYSQL Ebooks?  What Is The Easiest And Best Way To Set Up Your Own Website For Free?  Kelebihan Windows Me?  Best Way To Learn SQL And Perl?  Big Outlook Express Problem?  Adding Column To Flex Grid?  Why The Same Web Page Paste To Word And Notepad Has The Different Behavior. I Maen That To Paste Into Notepad?  What Is / And This \ Called? Online Schools   

o

Resources o o

o

o o

Top paying US jobs When a Would-Be Employer Takes Forever to Make an Offer - Don Masura began interviewing for a job as a career coach for a humanresources consultancy late last year. He endured four rounds of face-toface talks, then stayed in touch with interested executives. 10 Ways Your Resume Irks Hiring Managers - Fashion designer Coco Chanel had a personal rule: Before she left the house, the style icon always removed one piece of her ensemble to avoid the faux-pas of wearing too many accessories. Were Chanel alive today and working as a hiring manager, she would Write your resume in an hour International phone cards - call India, Russia, Canada, and other countries on the cheap

o

o

o

o o o

o o o

o

o

o

o o

o o

Seven tips for writing an online profile for LinkedIn, MySpace or Facebook - Haven’t posted a MySpace or other Web page? You may yet be pulled into online profiles — at work. A growing number of employers are encouraging or requiring professionals to post brief biographies on corporate intranet sites as well as companies’ consume Is a Job Move Worth It? - Two years ago, then 28-year-old Valerie French experienced a culture clash when she moved from southern California to Washington, D.C., to work at a major art museum. “I loved my job, but I just hated living there,” she says. She found the nation’s capita Classic Computer Science Puzzles - I prefer to think of programming languages as utilitarian tools for real world problems. They let me accomplish pragmatic (and often prosaic) goals. PHP is about as unsexy a language as you’ll ever find, but does that matter when it’s the technology drivi 6 salary secrets Signs you have a great job … or not Just One Job? Three Tips For Creating a Broad Resume - You’ll likely need to do more than just flesh out your job history to hook hiring managers. They may wonder about your skills, motivation and ability to adjust to a new work environment, says Tom Morgan, vice president of Pencom Systems Inc., an executive MSDN C# FAQ Video surveillance How to get an international job - Zero in on your chosen field, then seek out global employers. Beware of agencies that promise to get you a job for a fee. Posting Your Resume on YouTube To Stand Out From the Competition Though the practice is still in its early stages, young job hunters are starting to make a video clip part of their job application, sometimes even posting them on sites like Google Inc.’s YouTube and Google Video. Jobster.com, a Web site for job seekers, Weird Interview Questions - Career experts advise job applicants to rehearse answers to common questions ahead of the interview. But what’s a job seeker to do when asked an oddball query like: “What is your perception of the painting in the lobby?” 10 dumbest resume blunders - Having trouble finding a new job? Cheer up. When it comes to resumes, a new survey reveals just how clueless some of your competition is. Crash course in interview preparation Tips for Negotiating a Raise - Employers in the U.S. are budgeted to give raises averaging 3.9% in 2007, according to a recent study by World at Work, a nonprofit association. This is up from 2003 and 2004, when increases hit an all-time low of 3.6 percent. Weeding out bad employers Wacky Ways to Land a Job - Sometimes you need a little ingenuity and moxie to set yourself apart from the rest to land that job offer. Here are

o o

o o o o

o

o

o o

o

o o o

o o

o

some successful (and not so successful) examples of unusual tactics used by bright-eyed, first-time job-seekers hoping to launch their car Trim the fat from your resume Why Silicon Valley Firms Are Rethinking the Cubicle - The chip maker, emulating experiments at companies such as Cisco Systems Inc. and Hewlett-Packard Co., is planning tests in three U.S. locations of new office layouts. Plans include tables where several users can plop down with laptop computers, multiwork Niniane Wong’s preparing for a software interview C# FAQ Trucking companies - get free quotes for trucking companies in the USA 10 dumbest job-interview moves - Don’t bring mom to the job interview, warns Fortune’s Anne Fisher. Here are some of the goofiest things job seekers have done when meeting hiring managers. How to apply for a job abroad - Dreaming about a job abroad? Or maybe your spouse is transferring overseas, and you’re scouting career options. When applying to employers abroad, you’ll need a curriculum vitae (CV) — the job hunter’s document used outside of the U.S. that corresponds t How to dance around the salary-expectation question - Don Sutaria, president and founder of CareerQuest, a staffing and training firm, advises job seekers to avoid offering a solid figure. “Don’t answer the question. Say, ‘I’ll expect the fair market value. Make me an offer and we can discuss it.’ Or, ‘Maybe ASP Free Proper body language for a job interview - No matter what a job candidate might say, using the wrong body language can make them appear disinterested or even deceitful to recruiters. How to Answer These Tricky Interview Questions - Does the thought of going on a job interview cause your palms to sweat and your body to break out in hives? Stop itching; you’re not alone. What makes a resume scream: Don’t hire me .NET Framework FAQ Young employees can have a hard time asking for time off - Scheduling a vacation can generate particular angst for younger workers. Eager to make a good impression on co-workers and bosses, many young people fret about using all their vacation time. They haven’t figured out what’s acceptable and don’t want to pus Job tips for new grads Nine Steps to Acing a Job Interview - Don’t wait until the end to ask good questions. What’s the point? You just spent the whole interview telling the person you’re right for the job — it’s a little late to be asking questions about the job, right? So ask your questions at the beginning. And Mind Readers Wanted? - I started a challenging job. My boss has been vague, and during my first week, she didn’t assign anything or say what she expects. She prefers instant messaging to face-to-face meetings, but doesn’t even respond quickly to this. How do I succeed with such

o

o

o o

o o

o o o

o o o o

o o

o

How Can I Quell Jitters durting job interviews - I left my company three years ago and now I need to find a new job. The problem is that I become overwhelmed with anxiety during interviews and I miss what’s being said. What can I do? Ten Tips for a (Slightly) Less Awful Resume - Resume screening is just pattern matching. People are trying to figure out if you have the skills they’re looking for. If they could do this reliably without human intervention, so much the better. Screeners will like your resume best if it’s easy to scan Tech interviews India How to pass your yearly review - With all the distractions the end of the year brings, it’s easy to neglect your day-to-day work. But this might be the most important time of year to focus on your job and your career. Many organizations hold year-end performance reviews, and acing them i C++ Primer Job interviews inside Second Life - Some employers are experimenting with Second Life, the online virtual community owned by San Franciscobased Linden Lab, to screen prospective hires. The program allows job seekers to create a computer-generated image to represent themselves — known as a VB 2005 FAQ Best Web Host 10 mistakes managers make during job interviews - Conducting effective interviews requires a balance of instinct, insight, and some solid preparation. It also helps if you don’t make certain blunders, such as monopolizing the conversation, asking leading questions, or applying too much (or too little) pr Collector cars How to ace your job interview - 88 tips Tips for Creating a Resume That Downplays Job Hopping How to Explain a Short Stint On Your Resume to Interviewers - I’m an attorney in the financial-services industry with a good 11-year track record at my previous employer. I’ve been at a new job for six months and I can see that I’ve made a mistake. The role and duties aren’t what I was told, and my supervisor is an Promotional products Worried About Getting Laid Off? - Yet a study called “Middle Class in Turmoil,” released last year by the Center for American Progress, noted that just 18.3% of middle-class families (defined as those with annual household incomes ranging from $18,500 to $88,030) had accumulated wealth e Five Resume Tips for When You Can List Only One Employer - When you’ve worked at only one employer for your whole career, writing a resume that wins interviews may be no easy task. The reason: Some hiring managers and recruiters may take a dim view of your single-company job history. While you might see signs of

o

o

o o o o o o o o

o o

o o o o

o o

o o o

o

How to keep cool during an interview - I’ve been job interviewing for three years without success. I become anxious and the feeling can be overwhelming. Please help. Job Seekers: Put Your Web Savvy to Work - Whether seeking career advancement or scrambling in response to job cuts like those hitting the mortgage industry, many workers are hunting for new jobs. Bjarne Stroustrup’s C++ Style and Technique FAQ 6 common interview questions Refurbished notebooks Career blog @ MSFT Getting the Most Out of Each Employee - Learning how to deal with different working styles is a sure way to improve productivity. Deals on PCs Small business interview questions 100 Resources to Attract, Retain and Utilize Rock Star Programmers There are plenty of programmers out there, but rock star programmers? They are few and far between. Learn how to locate these gems and keep them happy with the resources below. Fatal mistakes when starting a new job The Five Essential Phone-Screen Questions - In an effort to make life simpler for phone screeners, I’ve put together this list of Five Essential Questions that you need to ask during an SDE screen. They won’t guarantee that your candidate will be great, but they will help eliminate a huge number of How to handle short-term jobs on your resume Affordable life insurance Stupid interview questions - from Business Week How to Pinpoint Accomplishments That Will Make Your Resume Shine Listing your job responsibilities on a resume may get you on an employer’s job-candidate roster, but if you note some solid accomplishments as well, you may be able to make the jump onto a recruiter’s short list. Terry Gallagher, president of Battalia Win Interview@MSFT Overcoming Resume Red Flags Related to Multiple Job Losses - I’ve lost three jobs during the past few years due to downsizings and staff reductions. None of these terminations were performance-related. How should I describe my work history on a resume and in interviews so employers understand the situation? Free Flash games Cheat sheets Five Tips for Resumes When You Can List Only One Employer - When you’ve worked at only one employer for your whole career, writing a resume that wins interviews may be no easy task. The reason: Some hiring managers and recruiters may take a dim view of your single-company job history. While you might see signs of What’s your biggest weakness?

o

Top resume mistakes - During the initial screening, the employment professional is alert for factors that will immediately eliminate a candidate from further consideration. These knockout factors invariably mean sure death to a person’s candidacy