Question 1

Which attribute in the SDP for a call is affected by the static NAT address configuration in an ExpresswayE?

Options :

A : connection

B : name

C : version

D : bandwidth

Answer: B

Question 2

Refer to the exhibit. Logins are failing via Mobile and Remote Access. How is this resolved?

Options :

A : No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.

B : SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.

C : Although a traversal client zone exists, there is no UC traversal client zone. One must be created.

D : Mobile and Remote Access login has not been enabled for the domain configured in the Expressway-C. The domain must be edited to allow Cisco UCM registrations.

Answer: C

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

Which two items are configured when deploying a B2B collaboration solution? (Choose two.)

Options :

A : SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-C

B : search rules in Cisco Expressway-E

C : SIP trunk between Cisco Unified Communications Manager and Cisco Expressway-E

D : traversal client on a Cisco Expressway-E

E : DNS zone on a Cisco Expressway-C

Answer: A,B

Question 5

What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with

private IP addresses and try to make a call over IP without any collaboration infrastructure?

Options :

A : The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.

B : Encrypted IP traffic for collaboration devices always is trusted by the firewall.

C : The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.

D : The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.

Answer: B

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