Consider the following statements:
- Address Resolution Protocol (ARP) provides a mapping from an IP address to the corresponding hardware (link-layer) address.
- A single TCP segment from a sender to a receiver cannot carry both data from to and acknowledgement for a segment from to
Which one of the following is CORRECT?
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Answer: B
Let us analyze each statement individually:
-
Statement (i): Address Resolution Protocol (ARP) provides a mapping from an IP address to the corresponding hardware (link-layer) address.
TRUE. The primary purpose of ARP is to dynamically map a known network-layer address (IPv4 address) to its corresponding physical hardware address (MAC address) on a local area network. -
Statement (ii): A single TCP segment from a sender to a receiver cannot carry both data from to and acknowledgement for a segment from to .
FALSE. TCP supports a mechanism known as piggybacking. When a host has both data to send and an acknowledgment to deliver, it can combine them into a single TCP segment. The segment will contain the payload (data) and have theACKflag set with the appropriate acknowledgment number.
Therefore, statement (i) is TRUE and statement (ii) is FALSE.
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