Basic Computer Networks Questions and Answers
Basic Computer Networks questions with answers help learners understand key networking concepts essential for IT and engineering students. This topic covers OSI layers, TCP/IP model, IP addressing, routing, and network devices like switches and routers. These technical interview questions and answers are commonly asked in campus placements and certification exams by companies such as Cisco, TCS, and Infosys. By practicing networking MCQs and interview-based questions, students can strengthen their fundamentals and perform better in both theoretical and practical assessments related to computer networks.
Basic Computer Networks
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217 questions
121. In sliding window flow control, if the window size is 63, what is the range of sequence numbers ?
- 0 to 63
- 0 to 64
- 1 to 63
- 1 to 64
122. Which of the following decides the role (sender or receiver) of a device on a network ?
- line connection
- link connection
- line discipline
- link decision
123. For a sliding window of size n-1 (n sequence numbers), there can be maximum of how many frames sent but unacknowledged ?
- 0
- n - 1
- n
- n + 1
124. For stop-and-wait flow control, for n data packets sent, how many acknowledgment are needed ?
- n
- 2n
- n - 1
- n + 1
125. Pick the incorrect statement in error retransmission used in continuous ARQ method.
- Go-back-N method requires more storage at the receiving site
- selectived repeat involves complex login than GO-back-N
- Go-back-N has better line utilization
- selective repeat has better line utilization
126. What uses a physical star topology ?
- 10 base 5
- 10 base 2
- 10 base T
- none of the above
127. The monitor station in what standard ensures that one and only one token is circulating ?
- 802.3
- 802.5
- FDDI
- all of the above
128. What can happen at a Token Ring station ?
- examination of the destination address
- regeneration of the frame
- passing of the frame to the next station
- all of the above
129. In Token Ring, when a frame reaches its destination station, which of the following occurs ?
- The message is copied
- Four bits in the packet are changed
- the message is taken off the ring and replaced by the token
- Both (a) and (b) above
130. Which of the following is not a transceiver function ?
- transmission and receipt of data
- checking of line voltages
- addition and subtraction of headers
- collision detection