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Here is the Exam theme of Cisco 300-820 Exam
- Number of Questions: 65-75
- Length of Exam: 90 mins
- Format: Multiple choices, multiple answers
- Passing score: 70%
- Language: English
Here is the cost of Cisco 300-820 Exam
- The cost of the Cisco 300-820 Exam is $300.
Official Training Course
Follow up the topic introduction with a comprehensive course administered by Cisco. This training comes in two delivery options, either a physical classroom with hands-on labs or e-learning. Both run for 5 days, with a specific audience targeted for collaboration administrators and collaboration engineers.
The course outline is very exhaustive and well-thought-out to provide you with the most relevant knowledge needed for your upcoming exam as well as your job role. Its main objective is to provide quality learning through blow-by-blow discussion and lab practices. Completing this program shapes your skills in Cisco Unified CM, together with Cisco Expressway, their configuration, and additional features. Subsequently, lectures acquaint you with troubleshooting of collaboration solutions and security of B2B communication. Also, using Cisco Collaboration, you gain proficiency in B2B calls.
Another key part of the course is Cisco’s Mobile and Remote Access (MRA). At this point, there will be an all-inclusive explanation of important skills, specifically in designing, troubleshooting, integrating, and securing MRA features. Some of the primary aspects that are deliberated include Cisco Instant Messaging and Presence and Cisco Unity Connection. Concluding the discussion are Cisco Webex Hybrid Services.
With the combination of lectures and labs, you get the upper hand with your test preparation. It readily highlights your knowledge of leveraging collaborative technologies for the accessibility of work supports such as content, voice, video, and remote workloads. And considering the weight and extensiveness of the course, there are certain prerequisites that needed to be cleared beforehand. First of all, it’s imperative to have a solid background in networking technologies, predominantly in voice and video. Unerring comprehension of basic Cisco collaboration solutions and Cisco Unified Communications Manager call control fundamentals is also a must. Lastly, you should already be familiar with vital signaling protocols like XMPP and SIP. If you think your contextual grasp is not enough, it’s advisable that you take the associated courses. These are “Understanding Cisco Collaboration Foundations” and “Implementing and Operating Cisco Collaboration Core Technologies”.
NEW QUESTION 52
Which complication does a NAT introduce in SDP for a SIP call?
- A. Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
- B. The IP address specified in the connection data field may be an unrouteable internal address.
- C. The encryption keys advertised in the SDP are only valid for clients not behind a NAT.
- D. When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
Answer: C
NEW QUESTION 53
Which service is available in a cloud-based deployment using Cisco Webex Messenger?
- A. Presence
- B. Voicemail
- C. Call forward services
- D. Phone services
Answer: A
NEW QUESTION 54 
Refer to the exhibit. An engineer is deploying mobile and remote access in an environment that already had functioning Business to Business calling. Mobile and remote access SIP registrations are failing. To troubleshoot, SIP logs were collected. How is this issue resolved?
- A. Change the SIP profile on the SIP trunk for the Expressway-E to Standard SIP Profile for TelePresence Endpoint
- B. Enable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service
- C. Write a custom normalization script since the "vcs-interop" normalization script does not allow registrations
- D. Change the "Incoming Port" in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations
Answer: D
NEW QUESTION 55
Refer to the exhibit.
When configuring a search rule that routes calls to a zone, what occurs when 13358 is dialed?
- A. 13358 is replaced by 135, and then is sent to the traversal zone.
- B. 13358 is sent directly to the traversal zone.
- C. 13358 is replaced by 135, and then is sent to the local zone.
- D. 13358 is replaced by 135 and remains in the same zone.
Answer: B
NEW QUESTION 56
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. The NAT ALG cannot inspect the contents of encrypted signaling messages.
- C. Internal endpoints cannot use addresses from the private address space.
- D. NAT ALG introduces jitter in the voice path.
Answer: B
NEW QUESTION 57
Refer to the exhibit.
Cisco Unified Communications Manager routes the call via the Webex Meetings route list and route group to the Video Mesh cluster Node#1 in the Video Mesh cluster is hosting the meeting and has reached full capacity, but other nodes in the cluster still have spare capacity.
What happens to the participant's call?
- A. The call is queued.
- B. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
- C. The call fails.
- D. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
Answer: D
NEW QUESTION 58
An organization with a domain name of example.com.
Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)
- A. _collab-edge._tls.example.com
- B. _sips._tcp.example.com
- C. _sips._udp.example.com
- D. _h323ls._udp.example com
- E. _h323ls._tcp.example.com
Answer: B,D
NEW QUESTION 59
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 4K resolution, which is not supported by ICE with CUCM 12.5
- B. A STUN cannot punch holes in the firewall
- C. ICE cannot reduce the packet loss on the link
- D. The video call is using encryption, which is not supported by ICE with CUCM 12.5
Answer: B
NEW QUESTION 60
Which two licenses are required for the Expressway B2B feature to work? (Choose two)
- A. Advanced Networking
- B. TURN Relays
- C. Traversal Server
- D. Rich Media Sessions
- E. Device Provisioning
Answer: C,D
NEW QUESTION 61
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. The NAT ALG cannot inspect the contents of encrypted signaling messages.
- C. Internal endpoints cannot use addresses from the private address space.
- D. NAT ALG introduces jitter in the voice path.
Answer: B
Explanation:
Explanation
https://www.voipinfo.net/docs/cisco/collab11.pdf
NEW QUESTION 62
Which step is required when configuring Cisco Webex Hybrid Message Service?
- A. Add Cisco Unity Connection to Expressway-E.
- B. Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.
- C. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.
- D. Register Expressway-C to Cisco Unified Communications Manager.
Answer: C
NEW QUESTION 63
Which two licenses are required for the B2B feature to work? (Choose two.)
- A. Advanced Networking
- B. Traversal Server
- C. Rich Media Sessions
- D. TURN Relays
- E. Device Provisioning
Answer: C,D
NEW QUESTION 64
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. d20d16d20d22
- C. 1
- D. d209d165d200d224
- E. 2
Answer: C,E
NEW QUESTION 65
For a Mobile and Remote Access deployment, which server's certificate must include the Unified registration domain as a Subject Alternate Name?
- A. Expressway-C server certificate
- B. Expressway-E server certificate
- C. Cisco Unified Communications Manager server certificate
- D. Expressway-C and Expressway-E server certificate
Answer: B
Explanation:
Explanation
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-7/Mobile-Remote-Ac
NEW QUESTION 66
What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)
- A. The MRA license is missing on the Expressway-E.
- B. The SRV record for _cisco-uds is misconfigured.
- C. The firewall is blocking the port.
- D. The Unified Communications zone is down.
- E. Transform is not configured on Expressway-E.
Answer: B,C
NEW QUESTION 67
With QoS enabled, which two statements about the Cisco Webex Video Mesh Node signaling and media traffic are true? (Choose two.)
- A. From VMN to CUCM SIP endpoints, the source UDP ports from 52500 to 62999 is used for audio traffic.
- B. From Webex cloud to VMN, the source UDP port 9000 is used for audio traffic.
- C. From VMN to Webex cloud, the destination UDP port 9000 is used for video traffic.
- D. From VMN to video endpoints, the destination UDP port 5004 is used for audio traffic.
- E. From VMN to Webex Teams clients, the source UDP port 5004 is used for video traffic.
Answer: A,E
NEW QUESTION 68
Refer to the exhibit.
An ISDN gateway is registered to Expressway-C with a prefix of 9 and/or it has a neighbor zone specified that routes calls starting with a 9.
Which value should be entered into the "Source" field to prevent toll fraud regardless at origin of the call?
- A. Any
- B. Neighbor Zone
- C. All
- D. Traversal Zone
Answer: C
NEW QUESTION 69
Refer to the exhibit.
What is the result of a transformation applied to alias 88514?
- A. [email protected]
- B. 88513@ccnpcollab com
- C. [email protected]
- D. [email protected]
Answer: C
NEW QUESTION 70
Refer to the exhibit.
Which description of the transformation is true?
- A. It converts [email protected]:<port> to [email protected]
- B. It changes all patterns that begin with [email protected]:<port> to [email protected]
- C. It converts [email protected]:<port> to [email protected]
- D. It changes [email protected]:<port> to [email protected]
Answer: C
NEW QUESTION 71
A company already has a Cisco Unified Communications Manager for internal audio and video traffic, but it requires video communication with external partners and customers. It is important to ensure security for the deployment and the connectivity.
What must be set up to enable this requirement?
- A. Cisco Unified Border Element and Cisco Firepower Firewall
- B. Cisco Unified Border Element and Cisco ASA Firewall
- C. Cisco Expressway-C and Cisco Expressway-E
- D. Cisco Expressway-C and Cisco Unified Border Element
Answer: C
NEW QUESTION 72
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