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Cisco 300-820 Exam Syllabus Topics:

Section	Objectives
Collaboration Cloud Architecture	- Webex platform integration overview - Cisco Collaboration cloud and hybrid architecture concepts
Call Control and SIP Integration	- Cisco Unified Communications Manager (CUCM) integration - SIP trunking and call routing design
Hybrid Collaboration Services	- Webex hybrid calling deployment - Calendar, directory, and media services integration
Cisco Expressway and Edge Services	- Mobile and Remote Access (MRA) - Expressway-C and Expressway-E deployment
Security and Troubleshooting	- Troubleshooting hybrid collaboration deployments - TLS/SRTP and secure signaling

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Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions (Q77-Q82):

NEW QUESTION # 77
Cisco Collaboration endpoints are exchanging encrypted signaling messages.
What is one major complication in implementing NAT ALG for voice and video devices?

A. Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.
B. Internal endpoints cannot use addresses from the private address space.
C. NAT ALG introduces jitter in the voice path.
D. The NAT ALG cannot inspect the contents of encrypted signaling messages.

Answer: D

NEW QUESTION # 78
Which describes what could done on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

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

Answer: A

NEW QUESTION # 79
An engineer is implementing security for Webex in a healthcare organization. These requirements must be met:
- All administrators must authenticate with an additional factor before accessing the Webex Control Hub.
- End users must not be able to join meetings using unregistered or
personal endpoints.
- All meeting content, including chat messages, must be protected to
meet compliance standards.
Which two configuration actions must the engineer take to meet the requirements? (Choose two.)

A. Disable meeting lock settings to allow faster participant entry without host approval.
B. Enable auto-join for video devices so that unregistered endpoints can participate seamlessly.
C. Configure meeting password bypass for internal organization users.
D. Enable multifactor authentication for administrator accounts via SSO integration.
E. Enforce Hybrid Data Security to control encryption keys within the customer data center.

Answer: D,E

Explanation:
Hybrid Data Security allows the organization to manage encryption keys in its own data center, helping protect meeting content and messages for compliance. Multifactor authentication through SSO adds the required extra authentication factor for administrators before they access Webex Control Hub.

NEW QUESTION # 80
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. Reconfigure "class-default" to use policing instead of fair queue.
B. Disable QoS on the WAN interface to avoid bandwidth misallocation.
C. Increase the priority bandwidth allocated for the VIDEO class.
D. Change the DSCP value used by Webex video streams from AF41 to EF.
E. Verify that ingress traffic marking from endpoints matches the expected DSCP.

Answer: C,E

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 # 81
Which step is required when configuring Cisco Webex Hybrid Message Service?

A. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.
B. Add Cisco Unity Connection to Expressway-E.
C. Add Expressway-C and Cisco UCM to the Cisco Webex Cloud.
D. Register Expressway-C to Cisco UCM.

Answer: A

NEW QUESTION # 82
......

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