N10-005 · Question #665
When configuring a wireless access point, Zach, a network administrator, needs to determine the MAC address of a local printer. Which of the following commands would be MOST helpful in determining…
The correct answer is B. arp. The ARP command displays and manages the ARP cache, which maps IP addresses to MAC addresses and is the most direct way to look up the MAC address of a device on the local network.
Question
When configuring a wireless access point, Zach, a network administrator, needs to determine the MAC address of a local printer. Which of the following commands would be MOST helpful in determining the MAC address?
Options
- Aping
- Barp
- Croute
- Ddig
How the community answered
(35 responses)- A3% (1)
- B91% (32)
- C6% (2)
Why each option
The ARP command displays and manages the ARP cache, which maps IP addresses to MAC addresses and is the most direct way to look up the MAC address of a device on the local network.
The ping command tests ICMP reachability and measures round-trip latency - it does not display MAC address information in its output.
ARP (Address Resolution Protocol) maintains a local cache that correlates Layer 3 IP addresses with Layer 2 MAC addresses. After pinging the printer to populate the ARP cache, running 'arp -a' on Windows or Linux displays the cached entries including the printer's MAC address alongside its IP address. This is the fastest and most reliable method to determine a locally reachable device's hardware address without accessing the device directly.
The route command displays or modifies the IP routing table, which contains network paths and gateway information but no MAC address data.
The dig command is a DNS query tool used to look up domain name records - it operates at Layer 7 and has no knowledge of Layer 2 MAC addresses.
Concept tested: ARP command for MAC address resolution
Source: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/arp
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