300-820 Practice Test

300-820 Practice Test practice questions, page 5 of 11, with answer review and explanations.

Question 21

Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?

  1. STUN
  2. RTP
  3. SNMP
  4. TURN

Question 22

Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?

  1. Off
  2. Best Effort
  3. Auto
  4. Force Encrypted

Question 23

Cisco media traversal technology has enabled a secure environment where internal video endpoints call and receive calls from external video endpoints. How does the Expressway-C and Expressway-E communicate?

  1. Expressway-C establishes an outgoing request to Expressway-E, enabling the Expressway-E in the DMZ to notify the internal Expressway-C of an incoming call from an external endpoint.
  2. Internal endpoints are registered to Expressway-E in the DMZ. Expressway-C, which is also in the DMZ, will receive and make calls on behalf of Expressway- E because they are in the same network.
  3. Expressway-E establishes an outgoing request to Expressway-C, enabling the Expressway-C in the DMZ to notify the internal Expressway-E of an incoming call from an external endpoint.
  4. Internal endpoints are registered to Expressway-C in the DMZ. Expressway-E, which is also in the DMZ, will receive and make calls on behalf of Expressway- C because they are in the same network.

Question 24

Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?

  1. call routing
  2. traversal subzone
  3. call policy
  4. search rule

Question 25

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

  1. connection
  2. name
  3. version
  4. bandwidth