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Cisco 300-820 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Suite and Devices Configuration	25%	- Configuration tasks 1. Configure site survivability 2. Configure Control Hub calling features such as Hot Desking and Auto Attendant 3. Configure Single Sign-On (SSO) 4. Configure directory synchronization 5. Configure registration-based local gateways 6. Configure certificate-based local gateways 7. Configure Hybrid Calendar Service using cloud mail services
Topic 2: APIs and Programmability	10%	- Automation and integration 1. Cisco Webex APIs 2. REST API fundamentals 3. Automation use cases 4. Programmability concepts
Topic 3: Suite and Devices Management and Administration	30%	- Administration and troubleshooting 1. Manage Control Hub services 2. Manage collaboration devices 3. Monitor collaboration services 4. Troubleshoot hybrid deployments
Topic 4: Cloud Management	10%	- Cloud administration 1. Troubleshoot cloud user management 2. Manage users and organizations
Topic 5: Collaboration Cloud Technologies	15%	- Cloud architecture and services 1. Cloud connectivity models 2. Webex cloud architecture 3. Hybrid service concepts 4. Identity and authentication
Topic 6: Security	10%	- Security implementation 1. Secure collaboration communications 2. Certificates and trust 3. Authentication and authorization

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Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions (Q105-Q110):

NEW QUESTION # 105
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. Encrypted IP traffic for collaboration devices always is trusted by the firewall.
B. The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.
C. The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.
D. The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.

Answer: B

Explanation:
A NAT ALG is similar to a firewall ALG, but a NAT ALG actually changes (maps) the addresses and ports in the signaling messages. The NAT ALG cannot inspect the contents of encrypted signaling messages.

NEW QUESTION # 106
Which step is required when configuring Cisco Webex Hybrid Message Service?

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

Answer: C

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

NEW QUESTION # 107
Which two types of information does Cisco Expressway back up? (Choose two.)

A. log files
B. IP addresses
C. call records
D. current call states
E. security certificates

Answer: D,E

NEW QUESTION # 108
A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access.
The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client.
What else can be done to solve this problem?

A. Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.
B. Change the FQDN of the Expressway.
C. Create a new CSR with new information on the SAN field.
D. Change the domain name.

Answer: A

NEW QUESTION # 109
You must install an Expressway Edge server pair to enable mobile and remote access for a customer network. Which two requirements are used to install an MRA solution successfully?
(Choose two.)

A. You can deploy Edge servers with multiple network interfaces or with a single network interface.
In both scenarios, you must enable NAT for the Internet-facing interface if you are using private Ip addresses.
B. Configure your firewalls to allow traffic from Expressway-Core to Expressway-Edge servers and to allow traffic from internet hosts to Expressway-Edge servers.
You do not need to configure firewall rules for traffic from Expressway-Edge to Expressway Core servers.
C. Configure DNS SRV records according. Make sure that you can resolve DNS SRV record_collab-edge_tls.yourdomain.com outside your company network. Make sure that you cannot resolve it inside your company network.
D. Make sure that Expressway-Edge and Expressway-Core servers have their server certificates signed by the same certification authority and the CA certificate is uploaded to the trusted CA store otherwise the Traversal zone will not work.

Answer: C,D

Explanation:
Inside DNS SRV should be _cisco-uds._tcp.yourdomain.com with A record pointing to CallManager UDS service, could be running on TFTP server using 8443.
Outside DNS SRV should be _collab-edge._tls.yourdomain.com. TLS is required for external encryption pointing to A record of Expressway-E on port 8443.
Note: _cuplogin._tcp.yourdomain.com is NO longer needed, as Jabber gets Profile from Cisco CM.

NEW QUESTION # 110
......

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