Computer Networks MCQs with Answers
Practice important Computer Networks MCQs with answers and explanations.
Multiple Choice Questions
Q1011: Path MTU discovery sends probes to:
- A: Destination
- B: Intermediate routers
- C: Source
- D: All nodes
View Answer
A
Q1012: ICMP messages are encapsulated within which protocol?
- A: TCP
- B: UDP
- C: IP
- D: FTP
View Answer
C
Q1013: An ICMP message is sent in response to incoming datagrams with problems, but not for ________.
- A: IP datagrams
- B: ICMP messages
- C: TCP packets
- D: UDP datagrams
View Answer
B
Q1014: The program used to test reachability of a host using ICMP is called ________.
- A: Traceroute
- B: Ping
- C: FTP
- D: HTTP
View Answer
B
Q1015: Ping uses which ICMP message types?
- A: Echo request and echo reply
- B: Destination unreachable and redirect
- C: Source quench and time exceeded
- D: Fragmentation required and echo reply
View Answer
A
Q1016: If host A is reachable from host B, it means datagrams can be delivered from ________ to ________.
- A: A to B
- B: B to A
- C: A to C
- D: B to C
View Answer
A
Q1017: The list of all routers on the path from host A to host B is called the ________.
- A: Route table
- B: Route trace
- C: Network path
- D: Route path
View Answer
D
Q1018: When a router decrements the TTL of a packet to zero, it sends which ICMP message?
- A: Source quench
- B: Time exceeded
- C: Destination unreachable
- D: Redirect
View Answer
B
Q1019: The tool "tracert" sends ICMP echo messages with ________ TTL values.
- A: Decreasing
- B: Increasing
- C: Random
- D: Constant
View Answer
B
Q1020: Trace-route continues until it receives which message from the destination?
- A: ICMP echo request
- B: ICMP echo reply
- C: ICMP destination unreachable
- D: ICMP source quench
View Answer
B