Consider the following two statements with respect to IPv4 in computer…
2019
Consider the following two statements with respect to IPv4 in computer networking:
P: The loopback (IP) address is a member of class B network.
Q: The loopback (IP) address is used to send a packet from host to itself.
What can you say about the statements P and Q?
- A.
P – True; Q – False
- B.
P – False; Q – True
- C.
P – True; Q – True
- D.
P – False; Q – False
Attempted by 298 students.
Show answer & explanation
Correct answer: B
Answer: P is false; Q is true.
About statement P: The loopback address range is 127.0.0.0/8 (commonly 127.0.0.1). This range is part of the historical class A address space (first octet 127), not class B, so the claim that it is a member of a class B network is false.
About statement Q: Loopback addresses are used to send packets from a host to itself for testing and inter-process communication. Such packets are handled locally and are not forwarded by routers, so the statement is true.
Key takeaway: The correct description is that the loopback address belongs to 127.0.0.0/8 (class A range) and is used to send packets to the local host.
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