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Home Cisco® 300-820

Cisco® 300-820 Exam Practice Questions (P. 5)

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Question #21
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
  1. A
    STUN
  2. B
    RTP
  3. C
    SNMP
  4. D
    TURN

Correct Answer:
A
Reference:
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html

Question #22
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?
  1. A
    Off
  2. B
    Best Effort
  3. C
    Auto
  4. D
    Force Encrypted

Correct Answer:
A
Reference:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco-Expressway-Administrator-Guide-X8-10.pdf

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. A
    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. B
    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. C
    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. D
    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.

Correct Answer:
A
Reference:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/exwy_b_mra-expressway-deployment-guide/exwy_b_mra- expressway-deployment-guide_chapter_00.html

Question #24
Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?
  1. A
    call routing
  2. B
    traversal subzone
  3. C
    call policy
  4. D
    search rule

Correct Answer:
A
Reference:
https://cmslab.ciscolive.com/pod8/cucm/expctrunk

Question #25
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?
  1. A
    connection
  2. B
    name
  3. C
    version
  4. D
    bandwidth

Correct Answer:
B
Reference:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-10/Mobile-Remote-Access-via-Expressway-Deployment-
Guide-X8-10.pdf

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