Computer Networks Top Interview Questions

Last Updated on Thursday, 7 August 2008 02:27 Written by EditorThursday, 7 August 2008 01:12

Some of the Top Basic Computer Networks Questions, that must be Answered and known if you even think of attending any Networks/Network Admin Interviews.

1. Virtual meetings on Internet are called………….
2. LAN can be connected by devices called………..
3. The bit pattern …………… is the preamble of 802.3 frame format.
4. Basic SONET frame is a block of ……………. bytes.
5. The amount of thermal noise is measured by ………………..
6. Explain the Frequency Modulation.
7. What is WAN and where it is used? how it is different from LAN and MAN.
8. Explain single error detecting code with example.
9. What is Flow control? Explain.
10. Explain CSMA/CD Protocol.
11. Describe Multitasking.
12. Describe Service Primitives.
13. Explain briefly PCM and its requirements.
14. What is Concession Control describe i) Load shedding ii) Jitter Control. Under it.
15. What is QoS?
16. Token Bucket Algorithm is employed to prevent congestion. The capacity of the bucket is 250k byes Arriving rate of the token is 2MB/sec. if the maximum output rate is 25MB/sec, calculate the burst length in time.
17. Describe principles considered in the design of network layer in the internet.
18. Describe Address format used in Internet. [ With figure ]
19. A Network on the Internet has a Subnet mask of 255.255.240.0. What is the maximum No. of hosts it can handle?
20. What are basic difference between IPV4 and IPV6?
21. Describe Address Resolution Protocol, use diagram if required.
22. What is the difference between Interior gateway protocol and Exterior gateway protocol.
23. What is the function of ATM adaptation layer.
24. Illustrate the phenomenon of Silly Window Syndrome in TCP.
25. What is delayed duplicate problem?
26. Explain Unicast addresses, Multicast adresses, and broadcast address.

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1. vipin April 3, 2010 at 4:41 am

   Virtual meetings on Internet are called………….
   LAN can be connected by devices called………..
   The bit pattern …………… is the preamble of 802.3 frame format.
   Basic SONET frame is a block of ……………. bytes.
   The amount of thermal noise is measured by ………………..
   Explain the Frequency Modulation.
   What is WAN and where it is used? how it is different from LAN and MAN.
   Explain single error detecting code with example.
   What is Flow control? Explain.
   Explain CSMA/CD Protocol.
   Describe Multitasking.
   Describe Service Primitives.
   Explain briefly PCM and its requirements.
   What is Concession Control describe i) Load shedding ii) Jitter Control. Under it.
   What is QoS?
   Token Bucket Algorithm is employed to prevent congestion. The capacity of the bucket is 250k byes Arriving rate of the token is 2MB/sec. if the maximum output rate is 25MB/sec, calculate the burst length in time.
   Describe principles considered in the design of network layer in the internet.
   Describe Address format used in Internet. [ With figure ]
   A Network on the Internet has a Subnet mask of 255.255.240.0. What is the maximum No. of hosts it can handle?
   What are basic difference between IPV4 and IPV6?
   Describe Address Resolution Protocol, use diagram if required.
   What is the difference between Interior gateway protocol and Exterior gateway protocol.
   What is the function of ATM adaptation layer.
   Illustrate the phenomenon of Silly Window Syndrome in TCP.
   What is delayed duplicate problem?
   Explain Unicast addresses, Multicast adresses, and broadcast address
2. athar ali azam March 31, 2010 at 7:59 am

   nice questions could u kindly send me networking and ccna questions for the interview in email id
3. priya March 27, 2010 at 1:03 pm

   please send me important question & answer in mainly c/c++ ,ds & networking(connections,boolean algebra &internet) in pattern
   of bca.
4. vinay March 21, 2010 at 2:16 am

   plz send me ques for networking
5. yaser March 14, 2010 at 4:25 pm

   where is the answers
6. Romil Shah March 8, 2010 at 10:59 am

   plz give the answers of all the computer networking and hardware questions…..
7. Dhananjay kumar singh March 8, 2010 at 7:15 am

   plz send a desktop suport intervew quistion
8. pavan March 4, 2010 at 1:01 pm

   pls send me the answers for the above! and questions in Networking Mainly on Routers switches Hubs TCP/IP etc.Pls Pls PLs PLs
9. Ranjit kumar March 2, 2010 at 2:34 pm

   I am Btech Fresher I want the question and answers that are asked in an interview for dot net and Tech support job.
10. shruthi March 1, 2010 at 4:16 am

    pls give some questions about finance related in interview………
11. john February 27, 2010 at 2:44 am

    sent qustion ans pleaseeeee
12. Prakash.M February 24, 2010 at 1:48 pm

    please send me interview questions on java and dot net
13. upndr February 21, 2010 at 3:20 am

    plzzzzzzzzz send hardware questions and answers
14. venkat February 20, 2010 at 11:45 am

    hi every one,I happy to see this website, can u people do me a favour? send me more interview questions on this topic…
15. jayant d bhade February 17, 2010 at 5:59 am

    hi this is jayant bhade i want this total quations of hardware and networking, so is it possible to send me.
16. Durgesh February 9, 2010 at 9:08 pm

    Hi,
    Sir, I have complited hardware & Networking from jetking . and I
17. VIPUL MEHTA February 5, 2010 at 5:47 am

    HIII!!! I WANT JOB ON NETWORK SIDE.. SO PLS GUIDE ME WHAT CAN I DO FOR THAT????
18. kirti February 4, 2010 at 12:17 pm

    plz send me d ans…
19. manjari February 3, 2010 at 4:55 pm

    plz send me these questions and answers as well as some questions which are generally asked in interview specially in asp.net on my mail id manjarikomal@gmail.com
20. ankush February 3, 2010 at 1:08 pm

    send me answers of these quest
21. sathya February 2, 2010 at 1:27 pm

    very worst ans must be given waste of time