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Cisco 300-820 Exam Syllabus Topics:

Section	Weight	Objectives
APIs and Programmability	10%	- Webex APIs 1. Events and integration APIs 2. Messaging, Meeting, Calling, People APIs - Development tools and portals 1. App Hub, Developer Portal, Room OS Portal 2. Device macros and automation
Cloud Management, Suite and Devices Administration	20%	- Control Hub administration 1. Domain setup, security settings, integrations 2. User, organization, site management - Monitoring and troubleshooting 1. Endpoint and service health monitoring 2. Call routing, meetings, messages issues
Security	10%	- Security architecture and services 1. Encryption, authentication, access control 2. Identity, key management, compliance - Security configuration 1. Trunk and media security policies 2. Endpoint, meeting, administration security
Suite and Device Configuration	25%	- Webex Calling configuration 1. Locations, numbers, dial plans, permissions 2. Trunks, route groups, translation patterns - Webex Meetings and Messaging setup 1. Endpoint registration and provisioning 2. Deployment models and feature configuration
Collaboration Cloud Technologies	25%	- Key concepts and architecture 1. NAT, ICE, TURN, STUN 2. Expressway media traversal and protocol interworking 3. Licensing and backup/restore procedures - Expressway configuration and integration 1. Network, certificates, clustering, QoS setup 2. Dial plan, B2B communication, MRA implementation
Hybrid and Migration to the Cloud	10%	- Hybrid services implementation 1. Calendar, directory, message connectors 2. Cloud Connected UC and migration tools - Deployment models and integration 1. On-premises to cloud migration 2. Video Mesh, hybrid data security

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Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions (Q128-Q133):

NEW QUESTION # 128
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 2222 from Expressway-E to Expressway-C
C. port 7001 from Expressway-E to Expressway-C
D. port 7001 from Expressway-C to Expressway-E

Answer: A

NEW QUESTION # 129
Refer to the exhibit.

Refer to the exhibit. A collaboration engineer is configuring Cisco Expressway for B2B calling. The engineer must allow inbound calls to be routed to Cisco UCM. The traffic must be unencrypted between the Expressway-C and the Cisco UCM cluster. Which configuration correctly implements the zone?

Answer: D

NEW QUESTION # 130
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?

A. search rules, transforms
B. DNS zone, local zone, search rules
C. transforms, CPL, user policy, search rules
D. search rules, zones, local zones

Answer: A

Explanation:
Explanation
https://community.cisco.com/t5/collaboration-voice-and-video/vcs-dial-plan-example-configuration-to-avoid-int

NEW QUESTION # 131
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

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

Answer: A,E

Explanation:
Public vs. Private Certificate Authority (CA)
There are a number of options to sign certificates on the Expressway-C and E servers. You can opt to have the Certificate Signing Request (CSR) signed by a public CA such as GoDaddy, Verisign, or others, or you can sign it internally using your own Certificate Authority (CA) (can either be self signed using openSSL or an internal enterprise CA such as a Microsoft Windows server).
The only server that is really required to be signed by a public CA is the Expressway-E. This is the only server that clients will see the certificate from when singing in via MRA therefore using a public CA will ensure that users do not have to manually accept the certificate. Using an internal CA to sign the Expressway-E will work but first time users will be prompted to accept the untrusted certificate. MRA registration of 7800 and 8800 series phones also will not work with internal certificates because their certificate trust list cannot be modified. For simplicity it is suggested that your Expressway-C and Expressway-E certificates both be signed by the same CA however this is not a requirement as long as you properly configured the trusted CA lists on both servers.
https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/213872- configure-and-troubleshoot-collaboration.html

NEW QUESTION # 132
Refer to the exhibit. Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway.
An H.323 endpoint with an alias of "EndpointA" is registered, and a SIP endpoint with an alias of
"EndpointB@pod1.local" is also registered. How is this issue resolved?

A. The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.
B. The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of "Standards-Based".
C. Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the pod1.local domain as that is owned by the local system. Calls to any other domain would work.
D. The calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.

Answer: A

NEW QUESTION # 133
......

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