300-820 Practice Test

300-820 Practice Test practice questions, page 9 of 11, with answer review and explanations.

Question 41

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?

  1. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
  2. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
  3. Add a server certificate to the Expressway-C that is signed by a certificate authority.
  4. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

Question 42

Refer to the exhibit. Which inbound connection should an administrator configure on the outside firewall?

  1. Media: UDP 36000 to 36011
  2. XMPP: TCP 5222
  3. SIP: TCP 5061
  4. HTTPS (tunneled over SSH between C and E): TCP 2222

Question 43

How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

  1. block the call with a call policy rule in the Expressway-E
  2. add the specific URI in the firewall section of the Expressway and block it
  3. configure FAC for the destination alias on the Expressway
  4. add a search rule route all calls to the Cisco UCM

Question 44

An engineer wants to configure a zone on the Expressway-E to receive communications from the Expressway-C in order to allow inbound and outbound calls. How is the peer address configured on the Expressway-C when Expressway-E has only one NIC enabled and is using static NAT mode?

  1. Expressway-E DHCP
  2. Cisco UCM FQDN
  3. Cisco UCM DHCP
  4. Expressway-E FQDN

Question 45

Refer to the exhibit. Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)

  1. XMPP: TCP 7400
  2. SIP: TCP 7001
  3. SIP TCP 5061
  4. Media: UDP 36012 to 59999
  5. HTTPS: TCP 8443