GCIH · Question #663
Analyze the data shown below. Where does this data originate from?
The correct answer is C. ARP cache. The data shown originates from the ARP cache, which maps IP addresses to their corresponding MAC addresses learned on the local network segment.
Question
Analyze the data shown below. Where does this data originate from?
Options
- AEstablished connections
- BRouting table
- CARP cache
- DNetwork interfaces
How the community answered
(41 responses)- B2% (1)
- C95% (39)
- D2% (1)
Why each option
The data shown originates from the ARP cache, which maps IP addresses to their corresponding MAC addresses learned on the local network segment.
Established connections are shown in outputs like 'netstat -an', which display source and destination IP addresses with port numbers, not IP-to-MAC address mappings.
A routing table displays network prefixes, subnet masks, gateway addresses, and interface metrics used for IP forwarding decisions, not hardware MAC addresses of remote hosts.
ARP cache entries display a table of IP-to-MAC address mappings that a host has resolved through the Address Resolution Protocol; this output is produced by commands such as 'arp -a' and shows the hardware addresses associated with known IP addresses on the local subnet. The presence of both Layer 3 (IP) and Layer 2 (MAC) address pairs in a tabular format is the defining characteristic of ARP cache data.
Network interface output - produced by 'ipconfig' or 'ifconfig' - shows the local adapter's own configuration including its assigned IP and MAC, not a table of resolved remote host addresses.
Concept tested: ARP cache structure and IP-to-MAC address mapping
Source: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/arp
Topics
Community Discussion
No community discussion yet for this question.