CompTIA
XK0-004 · Question #10
XK0-004 Question #10: Real Exam Question with Answer & Explanation
The correct answer is A: echo "1" > /proc/sys/net/ipv4/ip_forward. IP forwarding is often used in conjunction with iptables firewall configuration. In order to leverage IP forwarding, you must first enable it in the kernel. change from 0 to 1 to enable IP forwarding in the kernel echo "1" > /proc/sys/net/ipv4/ip_forward
Question
A Linux administrator has configured a Linux system to be used as a router. The administrator confirms that two network adapters are properly installed and functioning correctly. In addition, the output of the iptables -L command appears to contain a complete firewall configuration. Which of the following commands does the administrator need to issue for the router to be fully functional?
Options
- Aecho "1" > /proc/sys/net/ipv4/ip_forward
- Becho "0" > /proc/sys/net/ipv4/tcp_abort_on_overflow
- Cecho "0" > /proc/sys/net/ipv4/max_connections
- Decho "1" > /proc/sys/net/ipv4/ip_default_ttl
Explanation
IP forwarding is often used in conjunction with iptables firewall configuration. In order to leverage IP forwarding, you must first enable it in the kernel. change from 0 to 1 to enable IP forwarding in the kernel echo "1" > /proc/sys/net/ipv4/ip_forward
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