A technician is troubleshooting a host name being directed to the wrong system. The `arp -a' command line utility is used to identify and display which of the following?

The correct answer is B. Internet-to-adapter translation tables. The arp -a command displays the ARP (Address Resolution Protocol) cache, which maps IP addresses (Internet layer) to MAC addresses (adapter/hardware layer) - making option B the best description of 'Internet-to-adapter translation tables.' This can help identify ARP poisoning…

Network troubleshooting

Question

Options

AAll TCP/IP connections and listening ports
BInternet-to-adapter translation tables
CInformation to help diagnose DNS issues
DActive sockets and connections

How the community answered

(42 responses)

A
2% (1)
B
88% (37)
C
2% (1)
D
7% (3)

Explanation

The arp -a command displays the ARP (Address Resolution Protocol) cache, which maps IP addresses (Internet layer) to MAC addresses (adapter/hardware layer) - making option B the best description of 'Internet-to-adapter translation tables.' This can help identify ARP poisoning or spoofing, where a rogue device maps its MAC address to another host's IP, causing misdirection. netstat shows TCP/IP connections and listening ports, nslookup/dig help diagnose DNS issues, and ss or netstat display active sockets.

Topics

#ARP#MAC-to-IP mapping#troubleshooting commands#address resolution

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