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Cisco 300-820 Exam Syllabus Topics:

Section	Objectives
Topic 1: Call Control and SIP Integration	- Cisco Unified Communications Manager (CUCM) integration - SIP trunking and call routing design
Topic 2: Cisco Expressway and Edge Services	- Mobile and Remote Access (MRA) - Expressway-C and Expressway-E deployment
Topic 3: Hybrid Collaboration Services	- Webex hybrid calling deployment - Calendar, directory, and media services integration
Topic 4: Collaboration Cloud Architecture	- Webex platform integration overview - Cisco Collaboration cloud and hybrid architecture concepts
Topic 5: 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 (Q75-Q80):

NEW QUESTION # 75
Refer to the exhibit.

A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created. What should be done to resolve this issue?

A. More bandwidth must be added to the appropriate pipes
B. The existing zone using ID 7 must be deleted
C. The search rule must be changed to continue on match
D. The underlying DNS issue must be resolved

Answer: C

NEW QUESTION # 76
Which 16-digit number is unique to a serial number and is used to enable the system?

A. release key
B. RMS license key
C. Expressway series
D. option key

Answer: A

NEW QUESTION # 77
What is the purpose of a transform in the Expressway server?

A. A transform changes an alias that matches certain criteria into another alias.
B. A transform has the function as a neighbor zone in the Expressway. It creates a connection with another server.
C. A transform is used to route calls to a destination.
D. A transform changes the audio codec when the call goes through the Expressway.

Answer: A

NEW QUESTION # 78
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. 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.
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. 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.
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: A,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 # 79
Refer to the exhibit.

Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge.
Which action corrects this problem?

A. Ensure that the peer address does not match the Common Name on certificate.
B. Ensure that the credential has been entered correctly.
C. Ensure that the _cisco-uds SRV record has been configured.
D. Ensure that the SIP domains are added on Expressway Core.

Answer: B

NEW QUESTION # 80
......

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