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 ?
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56 Comments on Network engineer interview questions

  1. jitendera sinha
    Posted 2/4/2009 at 3:14 am | Permalink

    User(s) are complaining of delays when using
    the network. What would you do?
    Network slow problem create by many reasions like.. Spyware, Virus, Spool Virus, NetBios, or may be any machine infected with a Virus or Worm..

    the above is solutin may be coreect but another cause to daely is that if there is nay cycle b/w n/w then user called the dealy
    for this at present we switch off and then on the switch so that cycle and break and afte that we serach the reason of loop and then we will solve the problem
    virous and strom efeect on;y your system pefrommance not the n/w performance

  2. jitendera sinha
    Posted 2/4/2009 at 3:19 am | Permalink

    (1)the main problem working on switched lan is loop/cycle formation which cause the delay,
    (2)another problem is that as switch is a single broad cast doman so it condume the more resoses at the time

  3. jitendera sinha
    Posted 2/4/2009 at 3:25 am | Permalink

    class d ip adree
    each bit cantain 4 byt for network and the range of thatis 224-239

  4. jitendera sinha
    Posted 2/4/2009 at 3:41 am | Permalink

    tcp/ip nd its role-
    tcp/ip is a set of rules and known as transmission control protocall/internet protocall.
    it is conection less protocall and farme of data can tarvel with in any path of given n/w
    in the tcp it wait for ack after delevering each farme.
    tcp/ip is reponsble for
    (1)error corection
    2. Packect Sequencing
    3. Flow Control.
    4. Error handling

  5. jitendera sinha
    Posted 2/4/2009 at 3:49 am | Permalink

    udp is a constion orented protocall and know as user data garm protocall
    in the udp data is tarvled on a specfic path
    and get ack after delevring the all data t the destination,
    it is also known as thin protoall and doesnot consume much bandwith
    udp is applied when there is no reqirment of relable data delevery

  6. jitendera sinha
    Posted 2/4/2009 at 3:53 am | Permalink

    layers in tcp/ip
    1 application
    2 transport
    3 internet
    5 host to network

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