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
111. Which of the following access control methods is probabilstic ?
- polling
- contention
- token passing
- sliding window
112. In session layer, during data transfer, the data stream responsible for the control purpose (i.e. control of the session layer itself) is
- regular data
- typed data
- capability data
- extended data
113. In context of OSI or TCP/IP computer network models, which one of the following is FALSE ?
- besides the apan of geographical area, the other major difference between LAN and WAN is that the later uses switching element
- a repeater is used just to another one
- IP layer is connected oriented layer in TCP/IP
- a gateway is used to connect incompatible networks
114. The physical layer in reference to the OSI model defines
- data link procedures that provide for the exchange of data via frames that can be sent and received
- the interface between X.25 network and packet mode device
- the virtual circuit interface to packet-switched service
- all of the above
115. In stop-and-wait ARQ, if data 1 has an error, the receiver sends which frame ?
- NAK 0
- NAK 1
- NAK 2
- NAK
116. In which ARQ, when a NAK is received, all frames sent since the last frame acknowledged are retransmitted
- stop-and-wait
- go-back-n
- selective-reject
- (a) and (b)
117. In which communication, the poll/select method is used to determine control of the line?
- peer-to peer
- peer-to-primary
- primary-to-peer
- primary-to-secondary
118. Poll/select line discipline requires what to identify the packet recipient ?
- a timer
- a buffer
- an address
- a dedicated line
119. Which of the following are non-polling system ?
- TDMA
- stop and wait
- Xon/Xoff
- continuous ARQ
120. The secondary device in a multipoint configuration sends data in response to which of the following event ?
- an ACK
- an ENQ
- a poll
- a sel