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Cisco 300-820 考試大綱：

主題	簡介
主題 1	Configure Toll Fraud Prevention On Expressway Series (No Custom CPL Scripts) Initial Expressway Configurations
主題 2	With Cisco Webex Messenger Describe Expressway Licensing
主題 3	SIP Trunk Integration With Cisco Unified Communications Manager Describe Key Expressway Settings
主題 4	IP Trunk Security Profile On Cisco Unified Communications Manager Describe The Purpose Of ICE, TURN And STUN
主題 5	Troubleshoot A Business To Business (B2B) Collaboration Solution Describe Protocol Interworking On The Expressway
主題 6	Describe Cisco Jabber For Cloud And Hybrid Deployments Describe Expressway Backup And Restore Procedure (Stand Alone And Cluster) Configure Webex Hybrid Services Connector
主題 7	Describe The Signaling And Media Flows Used In A Cisco Webex Video Mesh Deployment SIP Trunk Security Profile On Cisco Unified Communications Manager
主題 8	Configure A Mobile And Remote Access (MRA) Solution Describe Expressway Media Traversal
主題 9	Unified Communications Configuration On Expressway Describe Expressway Core Dial Plan Elements
主題 10	SIP Trunk Integration With Cisco Unified Communications Manager Describe SIP Media Encryption Mode
主題 11	Unified Communications Traversal Zones Mobile And Remote Access Cisco Webex Technologies
主題 12	Configure A Mobile And Remote Access (MRA) Solution Describe Expressway Media Traversal
主題 13	Configure Toll Fraud Prevention On Expressway Series (No Custom CPL Scripts) Initial Expressway Configurations
主題 14	SIP Trunk Integration With Cisco Unified Communications Manager Describe Key Expressway Settings
主題 15	Configure Expressway Core Dial Plan Elements Unified Communications Configuration On Expressway
主題 16	IP Trunk Security Profile On Cisco Unified Communications Manager Describe The Purpose Of ICE, TURN And STUN

最新的 CCNP Collaboration 300-820 免費考試真題 (Q111-Q116):

問題 #111
A customer is migrating from an on-premises Cisco UCM deployment to Webex Calling and successfully converted the phone firmware from Enterprise to MPP. After a user is configured with Webex Calling professional license and the MPP phone is added with a MAC address, the endpoint fails to register. What is the reason?

A. The user has not signed into the Webex account.
B. The Webex App is not installed on the user's PC or is not running.
C. The phone must be added to the user before the license is assigned.
D. The remote office's firewall is blocking specific Webex service ports

答案：D

解題說明：
After an Enterprise phone is converted to MPP and added in Control Hub with the correct user license and MAC address, registration depends on the phone reaching Webex Calling cloud services. If required Webex service ports or URLs are blocked by the office firewall, the phone cannot complete cloud registration.

問題 #112
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. 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.
B. 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.
C. 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.
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.

答案：B

解題說明：
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

問題 #113
What allows endpoints behind a NAT to discover the paths through which they will pass media?

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

答案：A

解題說明：
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html

問題 #114
An engineer must fix broken SSH tunnels between Expressway-C (192.168.10.5) and Expressway-E (192.168.20.5). The engineer is advised that the packet capture shows the required packets for the SSH tunnels leaving the Expressway-C but not reaching the Expressway-E. Which firewall configuration must the engineer allow to resolve this issue?

A. port 2222 from Expressway-C to Expressway-E
B. port 7001 from Expressway-C to Expressway-E
C. port 2222 from Expressway-E to Expressway-C
D. port 7001 from Expressway-E to Expressway-C

答案：A

解題說明：
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_0100.html

問題 #115
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

A. Expressway Edge must use public CA signed certificate.
B. Expressway must generate certificate signing request.
C. Expressway Core can use private CA signed certificate.
D. The Jabber client can work with public or private CA signed certificate.
E. You must upload the root certificates in the phone trust store.

答案：C,D

解題說明：
A certificate chain: a certificate can be signed by a Certificate Authority (CA) using its own private key. In turn, therefore, a certificate can be verified as being signed by a CA by checking the signature against the CA's certificate (public key). Web browsers and other clients have a list of CA certificates that they trust, and can thus verify the certificates of individual servers.
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-
9/Cisco-Expressway-Certificate-Creation-and-Use-Deployment-Guide-X8-9.pdf CA-signed certificates (Recommended) - Users are not prompted because you are installing the certificate on the devices yourself. CA-signed certificates can be signed by a Private CA or a Public CA.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/14_1/cjab_b_planning-guide-for- jabber141/cjab_m_planning-security-and-certificates-129.html

問題 #116
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300-820測試引擎: https://www.testpdf.net/300-820.html

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