Computer Network Mcqs

Page No. 33

The server program tells its TCP that it is ready to accept a connection. This process is called ___________


aActive open


bActive close


c Passive close


dPassive open


View Answer Passive open

Connection establishment in TCP is done by which mechanism?


a Flow control


b Three-Way Handshaking


cForwarding


d Synchronization



Size of TCP segment header ranges between ___________


a16 and 32 bytes


b 16 and 32 bits


c20 and 60 bytes


d 20 and 60 bits


View Answer 20 and 60 bytes

The receiver of the data controls the amount of data that are to be sent by the sender is referred to as ___________


a Flow control


b Error control


cCongestion control


d Error detection


View Answer Flow control

The ______ field is used to detect errors over the entire user datagram.


audp header


bchecksum


c source port


ddestination port


View Answer checksum

Which is the correct expression for the length of UDP datagram?


aUDP length = IP length – IP header’s length


bUDP length = UDP length – UDP header’s length


cUDP length = IP length + IP header’s length


dUDP length = UDP length + UDP header’s length



“Total length” field in UDP packet header is the length of _________


aOnly UDP header


bOnly data


cOnly checksum


d UDP header plus data



The port number is “ephemeral port number”, if the source host is _______


aNTP


bEcho


cServer


dClient


View Answer Client

What is the header size of a UDP packet?


a8 bytes


b 8 bits


c16 bytes


d124 bytes


View Answer 8 bytes

Port number used by Network Time Protocol (NTP) with UDP is ________


a161


b123


c162


d124


View Answer 123

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