Quiz 300-820 - Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0–Trustable Guide Torrent

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Cisco 300-820 Exam Topics:

Section	Weight	Objectives
Cisco WebEx Technologies	25%	- Describe the signaling and media flows used in a Cisco WebEx Video Mesh deployment - Configure WebEx Hybrid Services/Connector Calendar Service (Office 365, Microsoft Exchange, One Button to Push) Message Service (Deployment requirements; expressway requirements, certificates, Call Manager pre-requisites, IM&P prerequisites, deployment models) Directory Services (Deployment requirements; deployment models, infrastructure requirements, active directory configuration, synchronization, WebEx user service assignment) Video Mesh (Deployment requirements including; bandwidth, clustering, endpoint support, video call capacity, ports and protocols, deployment models) - Describe Cisco Jabber for Cloud and Hybrid deployments with Cisco WebEx Messenger
Mobile and Remote Access	25%	- Configure a Mobile and Remote Access (MRA) solution DNS records types (not platform-specific) Certificates (not platform specific, covers Unified Communications Manager, IM&P, Expressways, Unity Connection) Unified Communications traversal zones Unified Communications configuration on Expressway HTTP allow list SIP trunk security profile on Cisco Unified Communications Manager - Troubleshoot a Mobile and Remote Access (MRA) solution DNS records (focus on Microsoft DNS) Certificates (focus on Microsoft CA, covers Unified Communications Manager, IM&P, Expressways, Unity Connection) Unified Communications traversal zones Unified Communications configuration on Expressway HTTP allow list SIP trunk security profile on Cisco Unified Communications Manager
Initial Expressway Configurations	25%	- Configure key Expressway settings DNS Network interfaces Certificates QoS Clustering Network firewall rules - Configure Expressway Core dial plan elements Transforms Search rules Zones Regular expressions Pipes and links - Configure toll fraud prevention on Expressway series (no custom CPL scripts) - Configure a Business to Business (B2B) collaboration solution DNS records (focus on Microsoft DNS) Certificates (focus on Microsoft CA) Traversal Zones Neighbor Zones Transforms Search rules SIP trunk integration with Cisco Unified Communications Manager - Troubleshoot a Business to Business (B2B) collaboration solution DNS records (focus on Microsoft DNS) Certificates (focus on Microsoft CA) Traversal Zones Neighbor Zones Transforms Search rules SIP trunk integration with Cisco Unified Communications Manager
Key Concepts	25%	- Describe the complications of NAT in a Collaboration environment - Describe the purpose of ICE, TURN and STUN - Describe Expressway media traversal - Describe protocol interworking on the Expressway SIP < > H.323 IPv4 and IPv6 - Describe Expressway Licensing Option keys Release key License consumption - Describe SIP media encryption mode Auto Force encrypted Force unencrypted Best effort - Describe Expressway Core dial plan elements Transforms Search rules Zones Regular expressions Pipes and links - Describe key Expressway settings DNS Network interfaces Certificates QoS Clustering Network firewall rules - Describe Expressway backup and restore procedure (stand alone and cluster)

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Cisco Implementing Cisco Collaboration Hybrid and Cloud Technologies (CLHCT) v2.0 Sample Questions (Q172-Q177):

NEW QUESTION # 172
Cisco Collaboration endpoints are exchanging encrypted signaling messages.
What is one major complication in implementing NAT ALG for voice and video devices?

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

Answer: A

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.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/collab11/collab11/security.html
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 # 173
What is a description of an Interactive Connectivity Establishment?

A. It is used by B2BUA to keep the firewall ports opened for inbound/outbound calls.
B. It is used to find the best media path between network elements in traversal calls.
C. It allows calling external endpoints with reduced overhead under VPN connections.
D. It allows Mobile and Remote Access endpoints to connect video calls signaling peer-to-peer.

Answer: B

NEW QUESTION # 174
Refer to the exhibit. Mobile and remote access is being added to an existing B2B deployment and is failing.

When the administrator looks at the alarms on the Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?

A. The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061
B. The listening port on the Expressway-C for SIP TLS must be changed to a value other than
5061
C. The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP
D. The listening port on the Expressway-C for SIP TCP must be changed to a value other than
5060

Answer: A

Explanation:
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2018/pdf/BRKUCC-2801.pdf

NEW QUESTION # 175
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

A. You must upload the root certificates in the phone trust store.
B. The Jabber client can work with public or private CA signed certificate.
C. Expressway Core can use private CA signed certificate.
D. Expressway must generate certificate signing request.
E. Expressway Edge must use public CA signed certificate.

Answer: C,D

NEW QUESTION # 176
A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally.
For which reason would you see activity on the TURN server when a call is established between two external endpoints?

A. The video call is using encryption, which is not supported by ICE with CUCM 12.5
B. The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5
C. A STUN cannot punch holes in the firewall
D. ICE cannot reduce the packet loss on the link

Answer: A

NEW QUESTION # 177
......

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