Cisco 300-820 問題練習

Question No : 1
Which mode should be used when Call Policy is configured on Expressways?

• A.extended CPL
• B.local CPL, policy service, and off
• C.on
• D.remote CPL

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正解:

Question No : 2
Which zone is required on a B2B deployment between Expressway-C and Expressway-E?

• A.traversal zone
• B.DNS zone
• C.default zone
• D.neighbor zone

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正解:

Question No : 3
When configuring a Cisco Expressway solution and need to design the dial plan with various rules for URIs and numbers coming through the device. To do so, it is important that some dial plan rules are applied in a certain order. When configuring the transform section, you must know the range of the priorities.
Which range is correct?

• A.any number in the drop-down menu
• B.any number in the dialog box
• C.any number between 1-128
• D.any number between 1-65534

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正解:

Question No : 4
Refer to the exhibit.



What is the result of a transformation applied to alias 88514?

• [email protected]
• B.88513@ccnpcollab com
• [email protected]
• [email protected]

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正解:

Question No : 5
Which describes what could done on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

• A.Application layer gateway could be enabled to bridge the media traffic.
• B.A static NAT route could be added to the firewall to bridge the two networks.
• C.The Expressway-E could be enabled for Dual-NIC capability.
• D.The Expressway-E could be enabled for interworking.

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正解:

Question No : 6
Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?

• A.connection
• B.name
• C.version
• D.bandwidth

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正解:
Explanation:
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

Question No : 7
Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?

• A.call routing
• B.traversal subzone
• C.call policy
• D.search rule

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正解:
Explanation:
Reference: https://cmslab.ciscolive.com/pod8/cucm/expctrunk

Question No : 8
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?

• 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.
• B.Internal endpoints are registered to Expressway-E in the DM
• C.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.
• D.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.
• E.Internal endpoints are registered to Expressway-C in the DM
• F.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.

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正解:
Explanation:
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 No : 9
Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?

• A.Off
• B.Best Effort
• C.Auto
• D.Force Encrypted

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正解:
Explanation:
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 No : 10
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

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

Question No : 11
Which connection does the traversal zone configuration define?

• A.Expressway-E and Collaboration Endpoints
• B.Cisco UCS E-Series and Cisco UCM
• C.Cisco UC and Cisco Unified Presence Server
• D.Cisco Expressway-C and Cisco Expressway-E platforms

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正解:
Explanation:
Reference: https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-11/Cisco-Expressway-Basic-Configuration-Deployment-Guide-X8-11-4.pdf

Question No : 12
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

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正解:
Explanation:
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

Question No : 13
What allows endpoints behind a NAT to discover the paths through which they will pass media?

• A.RTP
• B.TLS
• C.SNMP
• D.ICE

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

Question No : 14
Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)

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

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正解:
Explanation:
Reference: https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco-Expressway-Administrator-Guide-X12-6.pdf

Question No : 15
Which statement about scheduling Expressway backups is true?

• A.It is not supported on the application.
• B.It is allowed from the application CLI of the Expressway only.
• C.It is allowed from the application CLI and GUI of the Expressway.
• D.It is allowed from the application GUI of the Expressway only.

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正解: