Top 1000+ Solved Computer Networks MCQ Questions Answer
Q. What allows TCP to detect lost segments and in turn recover from that loss?
a. sequence number
b. acknowledgment number
c. checksum
d. both sequence & acknowledgment number
Q. Which of the following is false with respect to UDP?
a. connection-oriented
b. unreliable
c. transport layer protocol
d. low overhead
Q. Return value of the UDP port “Chargen” is _______
a. string of characters
b. string of integers
c. array of characters with integers
d. array of zero’s and one’s
Q. Beyond IP, UDP provides additional services such as _______
a. routing and switching
b. sending and receiving of packets
c. multiplexing and demultiplexing
d. demultiplexing and error checking
Q. The port number is “ephemeral port number”, if the source host is _______
a. ntp
b. echo
c. server
d. client
Q. “Total length” field in UDP packet header is the length of _________
a. only udp header
b. only data
c. only checksum
d. udp header plus data
Q. Which is the correct expression for the length of UDP datagram?
a. udp length = ip length – ip header’s length
b. udp length = udp length – udp header’s length
c. udp length = ip length + ip header’s length
d. udp length = udp length + udp header’s length
Q. The ______ field is used to detect errors over the entire user datagram.
a. udp header
b. checksum
c. source port
d. destination port
Q. IP Security operates in which layer of the OSI model?
a. network
b. transport
c. application
d. physical
Q. The physical layer is responsible for
a. line coding
b. channel coding
c. modulation
d. all of the mentioned
Q. The physical layer translates logical communication requests from the ______ into hardware specific operations.
a. data link layer
b. network layer
c. trasnport layer
d. application layer