CompTIA
N10-009 · Question #155
While troubleshooting connectivity issues, a junior network administrator is given explicit instructions to test the host's TCP/IP stack first. Which of the following commands should the network…
The correct answer is A. ping 127.0.0.1. The loopback address 127.0.0.1 is used to test the TCP/IP stack of the local machine. Pinging this address confirms whether the local system's networking stack is functioning correctly.
Submitted by tunde_lagos· Mar 6, 2026Network Troubleshooting
Question
While troubleshooting connectivity issues, a junior network administrator is given explicit instructions to test the host's TCP/IP stack first. Which of the following commands should the network administrator run?
Options
- Aping 127.0.0.1
- Bping 169.254.1.1
- Cping 172.16.1.1
- Dping 192.168.1.1
How the community answered
(22 responses)- A91% (20)
- C5% (1)
- D5% (1)
Explanation
The loopback address 127.0.0.1 is used to test the TCP/IP stack of the local machine. Pinging this address confirms whether the local system's networking stack is functioning correctly.
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