Computer Networks Top Interview Questions

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

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Computer Network Questions

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

Virtual meetings on Inte et are called.............
LAN can be connected by devices called...........
The bit patte ............... 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 inte et.
Describe Address format used in Inte et. [ With figure ]
A Network on the Inte et 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 addresses, and broadcast address.

Answers:

Webinar/ Netmeeting/ Chatting

Switches, Routers, Bridges and LANs/Bridges

The Preamble consists of seven bytes all of the form 10101010

A Basic Sonet frame consists total of 810 bytes

By a resistor- Noise voltage in microvolts (RMS), noise level in dBu, and dBV

Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave

WAN stands for Wide area networks used it large organizational networks or State networks including large community and country wide networks

LAN is a small inter connected computers, which can share information amongst each other, they are usually housed in a building or a floor area Edited and Computer Network Questions Answer's Provided by Binya (©) reserved

Interviewer Evaluation Points & Scoring Rubric

1 Explain trade-offs between memory, CPU, and network latency.
2 Identify failure modes, boundary conditions, and scalability bottlenecks.
3 Discuss caching strategies, data consistency models, and recovery.