response before the peer host is declared ‘down’, you would set the_________?

In Advanced Permanent Tunnel Configuration, to set the amount of time the tunnel test runs without a

response before the peer host is declared ‘down’, you would set the_________?
A . life sign polling interval
B . life sign timeout
C . life_sign_polling_interval
D . life_sign_timeout

Answer: D

Explanation:

Reference: https://sc1.checkpoint.com/documents/R77/CP_R77_VPN_AdminGuide/html_frameset.htm ?topic=documents/R77/CP_R77_VPN_AdminGuide/14018