300-820 · Question #189
Which option mandates that calls fall back to unencrypted media if encryption cannot be established?
The correct answer is C. best effort. 'Best effort' encryption policy instructs the system to attempt to negotiate encrypted media (SRTP) but allows the call to proceed with unencrypted media (RTP) if encryption cannot be established with the remote endpoint. 'Force encrypted' would reject the call entirely if SRTP…
Question
Which option mandates that calls fall back to unencrypted media if encryption cannot be established?
Options
- Aauto
- Bforce unencrypted
- Cbest effort
- Dforce encrypted
How the community answered
(57 responses)- A2% (1)
- B4% (2)
- C95% (54)
Explanation
'Best effort' encryption policy instructs the system to attempt to negotiate encrypted media (SRTP) but allows the call to proceed with unencrypted media (RTP) if encryption cannot be established with the remote endpoint. 'Force encrypted' would reject the call entirely if SRTP cannot be negotiated. 'Force unencrypted' always uses RTP regardless of the remote endpoint's capability. 'Auto' is not a standard Cisco media encryption policy label. Best effort is the option that mandates fallback to unencrypted media when encryption fails.
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