Refer to the exhibit.
Which option describes the security encryption status of this active call on a Cisco IP phone?
A.
unencrypted call signaling and media
B.
encrypted call signaling but unencrypted call media
C.
encrypted call media but unencrypted call signaling
D.
encrypted call signaling and media
E.
Not enough information provided to answer this question.
https://supportforums.cisco.com/document/73611/ip-phone-security-and-ctl-certificate-trust-list
Calls that have both encrypted signaling and encrypted media will show the lock icon in the lower right corner of the call window. This corresponds to Device Security Mode: Encrypted.
EncryptedCallLockIcon.bmp
Calls that use encrypted signaling between both ends, but that do not use encrypted media will show the shield icon. This corresponds to Device Security Mode: Authenticated.
AuthenticatedCallShieldIcon.bmp
The security status of the least secure party is used to determine which icon is displayed and what call security is used. Take a look at the following table for examples:
Phone A
Phone B
Icon Displayed
Encrypted Encrypted Lock – Encrypted Audio
Encrypted Authenticated Shield – Unencrypted Audio
Encrypted None None – Unencrypted Audio
0
0