2023 Valid 300-820 Real Exam Questions (Updated) 100% Dumps & Practice Exam
[UPDATED 2023] Cisco 300-820 Questions Prepare with Free Demo of PDF
NEW QUESTION # 83
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 Expressway-C and Cisco Unified Border Element
- B. Cisco Expressway-C and Cisco Expressway-E
- C. Cisco Unified Border Element and Cisco Firepower Firewall
- D. Cisco Unified Border Element and Cisco ASA Firewall
Answer: B
NEW QUESTION # 84
Refer to the exhibit.
Which description of the transformation is true?
- A. It changes [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 converts [email protected]:<port> to [email protected]
Answer: D
NEW QUESTION # 85
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. _sips._tcp.example.com
- B. _collab-edge._tls.example.com
- C. _h323ls._udp.example com
- D. _sips._udp.example.com
- E. _h323ls._tcp.example.com
Answer: A,C
Explanation:
Explanation
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-1/Cisco-Expressway-
NEW QUESTION # 86
The Cisco Webex Hybrid Message service is deployed geographically for separate Cisco Unified IM and Presence clusters. What must be configured in the Cisco Webex Control Hub to achieve this deployment?
- A. resource groups
- B. verified domains
- C. distributed DNS
- D. geo-locations
Answer: A
Explanation:
Reference:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/spark/hybridservices/ messageservice/cmgt_b_spark-hybrid-message-deployment-guide/cmgt_b_spark-hybrid-messagedeployment-guide_chapter_00.html
NEW QUESTION # 87
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?
- A. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
- B. Cisco Unified CM is always used for meeting capabilities.
- C. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.
- D. Cisco Webex Meeting Center is always used for meeting capabilities.
Answer: B
NEW QUESTION # 88
What is one of the user-related prerequisites for Jabber Team Messaging Mode Installation?
- A. Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.
- B. Create user accounts in Cisco Unified IM and Presence.
- C. Create user accounts in Cisco Webex Control Hub only.
- D. Create user accounts in Cisco Unified Communications Manager only.
Answer: C
NEW QUESTION # 89
Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?
- A. Cisco Webex Meeting Center is always used for meeting capabilities.
- B. Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.
- C. Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.
- D. Cisco Unified CM is always used for meeting capabilities.
Answer: A
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 # 90
When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?
- A. SDP c-line
- B. SDP b-line
- C. SIP record route
- D. SDP m-line
Answer: C
NEW QUESTION # 91
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. d209d165d200d224
- B. 0
- C. 1
- D. 2
- E. d20d16d20d22
Answer: B,C
NEW QUESTION # 92
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
- A. SNMP
- B. TURN
- C. STUN
- D. RTP
Answer: C
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
NEW QUESTION # 93
Drag and Drop Question
Drag and drop the services from the left onto their descriptions on the right. Some services are used more than once.
Answer:
Explanation:
NEW QUESTION # 94
Refer to the exhibit. You have Cisco Expressway using SIP for external calls. SIP Nat/Alg is configured on the edge firewall. The call fails with one way audio. Which problem with the configuration?
- A. The security certificate used by Cisco Expressway is not valid
- B. The Apache service was not restarted on Cisco Unified Communications Manager after SIP TLS was configured.
- C. Secure SIP (TLS) is not supported by the firewall.
- D. SIP NAT is not enabled for TLS
Answer: D
NEW QUESTION # 95
An administrator has been asked to configure Video Mesh signaling traffic to route through a proxy.
Which is an available proxy type in the Video Mesh node configuration to support this deployment model?
- A. Transparent Inspecting Proxy
- B. Distorting Proxy
- C. Transparent Explicit Proxy
- D. Reverse Proxy
Answer: A
NEW QUESTION # 96
Cisco Jabber clients are failing to log in using Mobile and Remote Access. The administrator checked the Jabber problem report logs and saw that connections to the Expressway-E are being refused on TCP port 8443. From a packet capture run on the Jabber client while attempting to log in, there is no response to the TCP SYN packets sent to the Expressway-E by Jabber.
Which two reasons are causing the Expressway-E to be unreachable on port 8443 from the internet? (Choose two.)
- A. The firewall is blocking the port.
- B. The Unified Communications zone is down.
- C. The certificate for Jabber is expired.
- D. The Jabber clients using an outdated version.
- E. The SRV record for _cisco-uds is misconfigured.
Answer: A,B
Explanation:
Traffic is coming from the internet so can not be the cisco_uds record, as it is created on the internal DNS only. Collab_edge is the external DNS record. It has to be port blocked or traversal zone down.
https://www.cisco.com/c/en/us/support/docs/unified-communications/expressway/118798- technote-cucm-00.html#anc6
NEW QUESTION # 97
D18912E1457D5D1DDCBD40AB3BF70D5D
Refer to the exhibit showing logs from the Expressway-C, a copy of the Expressway-E certificate, and the UC traversal zone configuration for the Expressway-C. An office administrator is deploying mobile and remote access and sees an issue with the UC traversal zone. The zone is showing "TLS negotiation failure". What is causing this issue?
- A. The Expressway-C is missing the FQDN of Cisco UCM in the Common Name of its certificate
- B. The Expressway-E does not have the FQDN of Cisco UCM listed as a SAN in its certificate
- C. The Expressway-E certificate includes the Expressway-C FQDN as a SAN entry
- D. In the UC Traversal Zone on the Expressway-C, the peer address is set to the IP of the Expressway-E, which is not a SAN entry in the Expressway-E certificate
Answer: B
NEW QUESTION # 98
When configuring a Cisco Expressway solution and need to design the dial plan with various rules for URIs and numbers coming through the device. To do so, it is important that some dial plan rules are applied in a certain order. When configuring the transform section, you must know the range of the priorities.
Which range is correct?
- A. any number in the drop-down menu
- B. any number between 1-128
- C. any number between 1-65534
- D. any number in the dialog box
Answer: C
Explanation:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/admin_guide/Cisco- Expressway-Administrator-Guide-X8-6.pdf
NEW QUESTION # 99
What is one of the user-related prerequisites for Jabber Team Messaging Mode Installation?
- A. Create user accounts in Cisco Unified IM and Presence.
- B. Create user accounts in Cisco Webex Control Hub only.
- C. Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.
- D. Create user accounts in Cisco Unified Communications Manager only.
Answer: C
NEW QUESTION # 100
Which dial plan component is configured in Expressway-C to route a call to the Cisco UCM?
- A. search rule
- B. call routing
- C. traversal subzone
- D. call policy
Answer: B
Explanation:
Reference:
https://cmslab.ciscolive.com/pod8/cucm/expctrunk
NEW QUESTION # 101
An administrator has been asked to configure Video Mesh signaling traffic to route through a proxy.
Which is an available proxy type in the Video Mesh node configuration to support this deployment model?
- A. Transparent Inspecting Proxy
- B. Distorting Proxy
- C. Transparent Explicit Proxy
- D. Reverse Proxy
Answer: A
Explanation:
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cloudCollaboration/wbxt/videomesh/cmgt_ b_webex-video-mesh-deployment-guide/cmgt_b_hybrid-media-deployment- guide_chapter_01.html
NEW QUESTION # 102
......
Cisco 300-820 Exam Topics:
| Section | Weight | Objectives |
|---|---|---|
| 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
- Describe Expressway Licensing
- Describe SIP media encryption mode
- Describe Expressway Core dial plan elements
- Describe key Expressway settings
- Describe Expressway backup and restore procedure (stand alone and cluster) |
| Mobile and Remote Access | 25% | - Configure a Mobile and Remote Access (MRA) solution
- Troubleshoot a Mobile and Remote Access (MRA) solution
|
| Initial Expressway Configurations | 25% | - Configure key Expressway settings
- Configure Expressway Core dial plan elements
- Configure toll fraud prevention on Expressway series (no custom CPL scripts)
- Troubleshoot a Business to Business (B2B) collaboration solution
|
| Cisco WebEx Technologies | 25% | - Describe the signaling and media flows used in a Cisco WebEx Video Mesh deployment - Configure WebEx Hybrid Services/Connector
- Describe Cisco Jabber for Cloud and Hybrid deployments with Cisco WebEx Messenger |
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