[March-2021]Braindump2go 300-820 (PDF and VCE)Exam Dumps 300-820 87 for 100% Passing 300-820 Exam[Q80-Q87]

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QUESTION 80
Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)

A. unsolicited notify
B. RFC 2833
C. KPML
D. passthrough
E. H.245 user input indication

Answer: BE
Explanation:
https://www.cisco.com/c/dam/en/us/td/docs/voice ip comm/expressway/admin guide/Cisco-Expressway-Administrator-Guide-X12-6.pdf

QUESTION 81
Refer to the exhibit. A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created.
What should be done to resolve this issue?

A. The search rule must be changed to continue on match
B. The existing zone using ID 7 must be deleted
C. More bandwidth must be added to the appropriate pipes
D. The underlying DNS issue must be resolved

Answer: A

QUESTION 82
What allows endpoints behind a NAT to discover the paths through which they will pass media?

A. RTP
B. TLS
C. SNMP
D. ICE

Answer: D
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html

QUESTION 83
Which two types of information does Cisco Expressway back up? (Choose two.)

A. call records
B. log files
C. IP addresses
D. current call states
E. security certificates

Answer: DE
Explanation:
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

QUESTION 84
When a Cisco Webex Video Mesh Node is co figured for an organization, which process does the Webex Teams client use to discover the optimal bridging resource?

A. the lowest STUN round-trip delay to each node and cloud
B. a reachable Video Mesh Node and then overflows to the cloud, if needed
C. the SIP delay header during call setup
D. an HTTPS speed and latency test to each node and the cloud

Answer: B
Explanation:
https://www.cisco.com/c/en/us/solutions/collateral/unified-communications/spark-hybrid-services/datasheet-c78-738153.html

QUESTION 85
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?

A. STUN
B. RTP
C. SNMP
D. TURN

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

QUESTION 86
Which two considerations must be made when using Expressway media traversal? (Choose two.)

A. It is possible to NAT both Expressway-E interfaces
B. The Unified Communications traversal zone should be used for MRA
C. The Expressway-E must be put in a firewall DMZ segment
D. Expressway Control is the traversal server installed in the DMZ
E. Cisco UCM zone should be either traversal server or client

Answer: BC
Explanation:
https://www.ciscolive.com/c/dam/r/ciscolive/apjc/docs/2018/pdf/BRKUCC-2801.pdf

QUESTION 87
Refer to the exhibit. Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)

A. XMPP: TCP 7400
B. SIP: TCP 7001
C. SIP TCP 5061
D. Media: UDP 36012 to 59999
E. HTTPS: TCP 8443

Answer: AB
Explanation:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-5/Cisco-Expressway-IP-Port-Usage-for-Firewall-Traversal-Deployment-Guide-X12-5.pdf

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