Correct Answer: C
Explanation
This answer is correct because the vpn tu command is used for VPN tunnel management and shows detailed information about VPN tunnels, such as the tunnel ID, peer IP, encryption domain, and status1. This command will bring up a menu for you to choose from, such as list all IPsec SAs, delete all IPsec SAs, or delete IPsec SA for given peer1.
The other answers are not correct because they either show different information or do not exist as commands. The cat $FWDlR/conf/vpn.conf command shows the VPN configuration file, which contains the VPN domains, communities, and encryption settings2. The vpn tu tlist command does not exist, but it might be confused with the vpn tunnelutil tlist command, which shows the tunnel utilization statistics3. The cpview command shows the Check Point real-time performance monitoring tool, which displays various system and network parameters, such as CPU, memory, disk, interfaces, and VPN4.
How to use the "vpn tu" command for VPN tunnel management
New VPN daemons in R81.10 / R81.20 - Check Point CheckMates
Remote Access VPN R81.20 Administration Guide - Check Point Software
Remote Access VPN R81 Administration Guide - Check Point Software