Question 1

How does an administrator configure an Expressway to make sure an external caller cannot reach a

specific internal address?

Options :

A : block the call with a call policy rule in the Expressway-E

B : add the specific URI in the firewall section of the Expressway and block it

C : configure FAC for the destination alias on the Expressway

D : add a search rule route all calls to the Cisco UCM

Answer: C

Question 2

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

Question 3

What is the default DSCP value for video traffic that is routed through an Expressway server?

Options :

A : 36

B : 24

C : 0

D : 34

Answer: C

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

300-820-page39-image6

Refer to the exhibit. An Expressway-C and Expressway-E are configured for B2B calling and the

Expressway-E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal

Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.

Which action resolves this error?

Options :

A :

Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name

of the Expressway-E.

B : Configure the Expressway-C Traversal Client zone transport protocol with TCP.

C : Add a server certificate to the Expressway-C that is signed by a certificate authority.

D : Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

Answer: D

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