Relevant 300-820 Answers - Exam 300-820 Study Guide

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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. Trunk and media security policies 2. Endpoint, meeting, administration security
Topic 2: Suite and Device Configuration	25%	- Webex Meetings and Messaging setup 1. Endpoint registration and provisioning 2. Deployment models and feature configuration - Webex Calling configuration 1. Trunks, route groups, translation patterns 2. Locations, numbers, dial plans, permissions
Topic 3: APIs and Programmability	10%	- Webex APIs 1. Messaging, Meeting, Calling, People APIs 2. Events and integration APIs - Development tools and portals 1. Device macros and automation 2. App Hub, Developer Portal, Room OS Portal
Topic 4: Collaboration Cloud Technologies	25%	- Key concepts and architecture 1. Expressway media traversal and protocol interworking 2. Licensing and backup/restore procedures 3. NAT, ICE, TURN, STUN - Expressway configuration and integration 1. Network, certificates, clustering, QoS setup 2. Dial plan, B2B communication, MRA implementation
Topic 5: 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. Video Mesh, hybrid data security 2. On-premises to cloud migration
Topic 6: Cloud Management, Suite and Devices Administration	20%	- Monitoring and troubleshooting 1. Call routing, meetings, messages issues 2. Endpoint and service health monitoring - Control Hub administration 1. Domain setup, security settings, integrations 2. User, organization, site management

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Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions (Q86-Q91):

NEW QUESTION # 86
Refer to the exhibit.

Refer to the exhibit. When a user tries to sign in to the Cisco Jabber client through Mobile and Remote Access, they receive this error message: "Cannot communicate with the server." The external DNS server is configured with the SRV records listed in the exhibit.
What is the cause of the issue?

A. The collab-edge DNS record must be added to the DNS server and the _cisco-uds DNS record must be removed.
B. The _sips DNS record must target expE-pub.cll-collab.internal and the _cisco-uds DNS record must be removed.
C. A Cisco CSF device must be configured in UC for the user and the _cisco-uds DNS record must be removed.
D. The HTTP allow list is not allowing communication with the Instant Message and Presence server.

Answer: C

NEW QUESTION # 87
An engineer must configure the zone to connect to an Expressway-E using Single NIC with NAT.
The internal IP address is 192.168.10.63, and the NAT address is 203.0.113.5. What must the engineer configure on the Expressway-C to meet this requirement?

A. traversal zone with the peer address 192.168.10.63
B. neighbor zone with the peer address 192.168.10.63
C. neighbor zone with the peer address of 203.0.113.5
D. traversal zone with the peer address of 203.0.113.5

Answer: D

Explanation:
In this example, firewall A must allow NAT reflection of traffic coming from the Expressway-C that is destined for the external address, that is 64.100.0.10, of the Expressway-E. The traversal zone on the Expressway-C must have 64.100.0.10 as the peer address.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X14-
0/basic_config/exwy_b_cisco-expressway-e-and-expressway-c-basic-configuration-deployment- guide-x14-0/exwy_m_advanced-networking-deployments.html

NEW QUESTION # 88
How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

A. add the specific URI in the firewall section of the Expressway and block it
B. block the call with a call policy rule in the Expressway-E
C. add a search rule route all calls to the Cisco UCM
D. configure FAC for the destination alias on the Expressway

Answer: B

NEW QUESTION # 89
What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

A. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
B. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
C. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
D. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.

Answer: A

NEW QUESTION # 90
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?

A. Cisco Unified CM is always used for meeting capabilities.
B. Cisco Webex Meeting Center is always used for meeting capabilities.
C. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
D. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.

Answer: B

Explanation:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/12_8/cjab_b_planning-guide-cisco- jabber-128/cjab_b_planning-guide-cisco-jabber-
128_chapter_010.html?bookSearch=true#CJAB_RF_H9B69A5D_00

NEW QUESTION # 91
......

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