COMPUTER NETWORK MCQS

1) A network that contains multiple hubs is most likely configured in which topology? 
 A. Mesh
 B. Tree
 C. Bus
 D. Star 
Ans:- B

2) Which of the following ISO level is more closely related to the physical communications facilities? 
 A. Application
 B. Session
 C. Network
 D. Data link
Ans:- D

3) Which of the following has the smallest default maximum physical receive packet size? 
 A. ARCnet
 B. Ethernet
 C. Token ring[4Mbps]
 D. Token ring[16Mbps]
Ans:-B

4) To prevent silly window syndrome created by a sender that is sending data at a very slow rate_____can be used. 
 A. Clark s solution
 B. Nagle s algorithm
 C. Both a and b 
 D. Delayed acknowledgement 
Ans:-B

5) In which topology if there are n devices in a network each device has n-1 ports for cables? 
 A. Mesh
 B. Star
 C. Bus
 D. Ring
Ans:- A

6) Which of the following is not a service primitive? 
 A. Connect
 B. Listen
 C. Send
 D. Sound
Ans:-D

7) Broadband uses 
 A. Manchester encoding
 B. FSK encoding
 C. ASK encoding
 D. PSK encoding
Ans:-D

8) MTU is specified by 
 A. IP Datagram size
 B. Hardware technology
 C. TCP Segment size
 D. None of the above
Ans:-B

9) Start and stop bits are used in serial communication for 

 A. Error detection
 B. Error correction
 C. Synchronization 
 D. Slowing down the communication 
Ans:-C 

10) In a client/server networking environment the processing 

 A. Takes place only on the client side
 B. Of request by the client is handled by the server
 C. Takes place only on the server side
 D. None of these
Ans:-B

11) HDLC is 
 A. Bit oriented
 B. Code dependent 
 C. Both a and b above
 D. None of the above
Ans:-A

12) How many carrier frequencies are used in BFSK? 
 A. 2
 B. 1
 C. 0
 D. None of above
Ans:-A

13) Which of the following protocol is used for transferring electronic mail messages from one machine to another? 
 A. FTP
 B. SNMP
 C. SMTP
 D. RPC
Ans:-C

14) Which is reserved address for private networks? 
 A. 128.0.0.0 to 191.255.255.255
 B. 172.16.0.0 to 172.31.255.255
 C. 150.0.0.0 to 150.255.255.255
 D. 202.40.55.0 to 202.40.55.255
Ans:-B

15) If a protocol specifies that data should be sent at 100 Mbps what is this issue? 
 A. Syntax
 B. Semantics
 C. Timing
 D. None of these
Ans:-C

16) Contention is 
 A. A collection of interconnected functional units that provides a data communications service among stations attached to the network
 B. The condition when two or more stations attempt to use the same channel at the same time
 C. A continuous frequency capable of being modulated or impressed with a second signal
 D. One or more conductors that serve as a common connection for a related group of devices
Ans:-B 

17) Which of the following TCP/IP protocol is used for the file transfer with minimal capability and minimal overhead? 
 A. RARP
 B. FTP
 C. TFTP
 D. TELNET
Ans:-C

18) Packets of the same session may be routed through different paths 
 A. TCP ,but not UDP
 B. TCP and UDP
 C. UDP ,but not TCP
 D. Neither TCP nor UDP
Ans:-B

19) Collision domain can be compared to which distance data travels between two stations? 
 A. Minimum
 B. Maximum
 C. Virtual 
 D. Both a and b
Ans:-B

20) The idea of RZ and the idea of NRZ-I are combined into the .....scheme. 
 A. Manchester
 B. Differential manchester
 C. Both (a) and (b)
 D. Neither (a) and (b)
Ans:-B