29 Oct Practice Test Question – Site-to-Site VPN IPSec Mode
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What IPSec mode is most commonly used to create site-to-site VPNs between locations?
A. Internet key exchange mode
B. Tunnel mode
C. Transport mode
D. Security association mode
Correct Answer: B
Organizations deploying IPsec for site-to-site VPNs typically use tunnel mode to connect two VPN concentrators to each other and then route traffic through that tunnel in a manner that is transparent to the communicating devices. Transport mode is more commonly used for remote access VPNs. Internet key exchange (IKE) and security associations (SAs) are not modes of IPSec VPN operation.
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