XK0-005 · Question #1549
XK0-005 Question #1549: Real Exam Question with Answer & Explanation
The correct answer is B: sysctl -w net.ipv4.ip_forward=1. This command immediately enables IPv4 forwarding by setting the system control variable for the current session. This command makes the change persistent by appending the configuration to the /etc/sysctl.conf file, which will be applied at every boot. To apply the changes made in
Question
A Linux systems administrator needs to persistently enable IPv4 forwarding in one of the Linux systems. Which of the following commands can be used together to accomplish this task? (Choose two.)
Options
- Asysctl net.ipv4.ip_forward
- Bsysctl -w net.ipv4.ip_forward=1
- Cecho "net.ipv4.ip_forward=1" >> /etc/sysctl.conf
- Decho 1 > /proc/sys/net/ipv4/ip_forward
- Esysctl -p
- Fecho "net.ipv6.conf.all.forwarding=l" >> /etc/sysctl.conf
Explanation
This command immediately enables IPv4 forwarding by setting the system control variable for the current session. This command makes the change persistent by appending the configuration to the /etc/sysctl.conf file, which will be applied at every boot. To apply the changes made in the sysctl configuration file, you could also run E. sysctl -p, but it is not required for persistence since that file will automatically apply on reboot.
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