Basic Computer Networks MCQ Question and Answer
Basic Computer Networks MCQ Question and Answer
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