Q.1 Return value of the UDP port “Chargen” is _______.
A. String of integers
B. String of characters
C. Array of zero’s and one’s
D. Array of characters with integers
Ans : String of characters
Q.2 Which of the following is false with respect to UDP?
A. Unreliable
B. Connection-oriented
C. Low overhead
D. Transport layer protocol
Ans : Connection-oriented
Q.3 What is the main advantage of UDP?
A. Reliable
B. More overload
C. Fast
D. Low overhead
Ans : Low overhead
Q.4 Beyond IP, UDP provides additional services such as _______.
A. Sending and receiving of packets
B. Routing and switching
C. Demultiplexing and error checking
D. Multiplexing and demultiplexing
Ans : Demultiplexing and error checking
Q.5 What is the header size of a UDP packet?
A. 8 bits
B. 8 bytes
C. 124 bytes
D. 16 bytes
Ans : 8 bytes
Q.6 Port number used by Network Time Protocol (NTP) with UDP is ________.
A. 123
B. 161
A. 124
B. 162
Ans : 123
Q.7 “Total length” field in UDP packet header is the length of _________.
A. Only data
B. Only UDP header
C. UDP header plus data
D. Only checksum
Ans : UDP header plus data
Q.8 The port number is “ephemeral port number”, if the source host is _______.
A. Server
B. Echo
C. Client
D. NTP
Ans : Client
Q.9 The ______ field is used to detect errors over the entire user datagram.
A. checksum
B. udp header
C. destination port
D. source port
Ans : checksum
Q.10 Which is the correct expression for the length of UDP datagram?
A. UDP length = UDP length – UDP header’s length
B. UDP length = IP length – IP header’s length
C. UDP length = UDP length + UDP header’s length
D. UDP length = IP length + IP header’s length
Ans : UDP length = IP length – IP header’s length
