Question 1

Which two considerations must be made when using Expressway media traversal? (Choose two.)

Options :

A : It is possible to NAT both Expressway-E interfaces

B : The Unified Communications traversal zone should be used for MRA

C : The Expressway-E must be put in a firewall DMZ segment

D : Expressway Control is the traversal server installed in the DMZ

E : Cisco UCM zone should be either traversal server or client

Answer: B,C

Question 2

Which service is available in a cloud-based deployment using Cisco Webex Messenger?

Options :

A : Presence

B : Phone services

C : Voicemail

D : Call forward services

Answer: A

Question 3

What allows endpoints behind a NAT to discover the paths through which they will pass media?

Options :

A : RTP

B : TLS

C : SNMP

D : ICE

Answer: D

Question 4

What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

Options :

A : 1024

B : 2048

C : 4096

D : 8192

Answer: C

Question 5

Refer to the exhibit. Call policy rules on an Expressway-E prevent external callers from the internet from calling a VIP whose URI is [email protected]. Which additional configuration setting is required for this call policy to function as intended?

Options :

A : The default zone on the Expressway-E must not be configured to treat as authenticated.

B : A search rule must be configured with an extract match for [email protected] to pass the call to the Expressway-C.

C : The Cisco TelePresence endpoint registered with the URI [email protected] must be set in “do not disturb” mode.

D : SIP TLS must be disabled on the Expressway-E.

Answer: A