CompTIA Linux+ (XK0-004) — Question 112

A technician wants to secure a sensitive workstation by ensuring network traffic is kept within the local subnet. To accomplish this task, the technician executes the following command: echo 0 > /proc/sys/net/ipv4/ip_default_ttl
Which of the following commands can the technician use to confirm the expected results? (Choose two.)

Answer options

• A. tcpdump
• B. traceroute
• C. route
• D. iperf
• E. ip
• F. arp

Correct answer: A, B

Explanation

The correct answers are tcpdump and traceroute. tcpdump can capture and analyze network packets to confirm if traffic is restricted to the local subnet, while traceroute can show the path packets take, indicating whether they stay within the subnet. The other options, such as route and iperf, do not provide direct confirmation of traffic flow within the subnet.