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Cisco 300-820 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security	10%	- Security architecture and services 1. Encryption, authentication, access control 2. Identity, key management, compliance - Security configuration 1. Endpoint, meeting, administration security 2. Trunk and media security policies
Topic 2: 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
Topic 3: APIs and Programmability	10%	- Development tools and portals 1. Device macros and automation 2. App Hub, Developer Portal, Room OS Portal - Webex APIs 1. Events and integration APIs 2. Messaging, Meeting, Calling, People APIs
Topic 4: 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
Topic 5: Cloud Management, Suite and Devices Administration	20%	- Control Hub administration 1. User, organization, site management 2. Domain setup, security settings, integrations - Monitoring and troubleshooting 1. Endpoint and service health monitoring 2. Call routing, meetings, messages issues
Topic 6: 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. Dial plan, B2B communication, MRA implementation 2. Network, certificates, clustering, QoS setup

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Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions (Q55-Q60):

NEW QUESTION # 55
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-E to Expressway-C
B. port 2222 from Expressway-C to Expressway-E
C. port 7001 from Expressway-C to Expressway-E
D. port 7001 from Expressway-E to Expressway-C

Answer: B

Explanation:
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

NEW QUESTION # 56
Which two statements about configuring mobile and remote access on Cisco TelePresence Video Communication Server Expressway are true? (Choose two.)

A. The traversal server zone on Expressway-C must have a TLS verify subject name configured.
B. The traversal client zone and the traversal server zone Media encryption mode must be set to Auto.
C. The traversal client zone and the traversal server zone must be set to SIP TLS with TLS verify mode set to On.
D. The traversal client zone on Expressway-C Media encryption mode must be set to Auto.
E. The traversal client zone and the traversal server zone Media encryption mode must be set to Force encrypted.

Answer: C,E

NEW QUESTION # 57
Which step is required when configuring Cisco Webex Hybrid Message Service?

A. Add Cisco Unity Connection to Expressway-E.
B. Register Expressway-C to Cisco Unified Communications Manager.cisco
C. Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.
D. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.

Answer: D

Explanation:
Explanation
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/messageservice

NEW QUESTION # 58
Refer to the exhibit. Call policy rules on an Expressway-E prevent external callers from the internet from calling a VIP whose URI is vip@cisco.com. Which additional configuration setting is required for this call policy to function as intended?

A. A search rule must be configured with an extract match for vip@cisco.com to pass the call to the Expressway-C.
B. SIP TLS must be disabled on the Expressway-E.
C. The Cisco TelePresence endpoint registered with the URI vip@cisco.com must be set in "do not disturb" mode.
D. The default zone on the Expressway-E must not be configured to treat as authenticated.

Answer: D

NEW QUESTION # 59
Refer to the exhibit. A customer reports degraded video quality during Webex Meetings. An engineer examines the Webex Control Hub statistics and notices the uplink bandwidth from the customer's site fluctuates sharply. Which two actions must the engineer take to restore video performance? (Choose two.)

A. Increase the priority bandwidth allocated for the VIDEO class.
B. Change the DSCP value used by Webex video streams from AF41 to EF.
C. Reconfigure "class-default" to use policing instead of fair queue.
D. Verify that ingress traffic marking from endpoints matches the expected DSCP.
E. Disable QoS on the WAN interface to avoid bandwidth misallocation.

Answer: A,D

Explanation:
Webex video quality depends on sufficient prioritized WAN bandwidth and correct DSCP classification. The policy prioritizes traffic marked AF41, so the engineer should confirm that Webex endpoints are marking video traffic as expected and increase the VIDEO class priority allocation if the current 20% is insufficient during fluctuating uplink conditions.

NEW QUESTION # 60
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