[Dec-2025 Newly Released] 300-820 Exam Questions For You To Pass
Cisco 300-820 Exam: Basic Questions With Answers
NEW QUESTION # 43
An engineer is deploying Mobile and Remote Access to allow external Cisco Jabber users to sign into a Cisco UCM cluster via Cisco Expressways. The users will sign-in in the format [email protected]. Contact photos for Jabber are hosted on a webserver with the FQDN of phonebook cisco.com. Which configuration must be completed to allow external Jabber users to see contact photos?
- A. An HTTP allow list entry must be made on the Expressway-E for phonebook cisco.com.
- B. A SIP allow list entry must be made on the Expressway-E for .*@cisco.com.
- C. A SIP allow list entry must be made on the Expressway-C for .*@cisco.com.
- D. An HTTP allow list entry must be made on the Expressway-C for phonebook cisco.com.
Answer: D
NEW QUESTION # 44
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. Reverse Proxy
- B. Distorting Proxy
- C. Transparent Explicit Proxy
- D. Transparent Inspecting Proxy
Answer: D
NEW QUESTION # 45
Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?
- A. DNS zone
- B. traversal zone
- C. Unified Communications traversal zone
- D. neighbor zone
Answer: C
NEW QUESTION # 46
Which step is required when configuring cloud and hybrid deployments for Cisco Jabber?
- A. Add the Jabber user to Expressway-C.
- B. Add Jabber Users to the Cisco Webex Administration Tool.
- C. Add the Jabber user to Cisco Unity Connection.
- D. Add the Jabber user to Expressway-E.
Answer: B
NEW QUESTION # 47
Refer to the exhibit.
Refer to the exhibit. When a user tries to sign in to the Cisco Jabber client through Mobile and Remote Access, they receive this error message: "Cannot communicate with the server." The external DNS server is configured with the SRV records listed in the exhibit.
What is the cause of the issue?
- A. The collab-edge DNS record must be added to the DNS server and the _cisco-uds DNS record must be removed.
- B. The _sips DNS record must target expE-pub.cll-collab.internal and the _cisco-uds DNS record must be removed.
- C. The HTTP allow list is not allowing communication with the Instant Message and Presence server.
- D. A Cisco CSF device must be configured in UC for the user and the _cisco-uds DNS record must be removed.
Answer: D
NEW QUESTION # 48
An engineer is supporting an existing Cisco Collaboration deployment that has internal and external home users using the solution without VPN. Business usage also includes B2B calling for voice and video. Suddenly the engineer receives a report that one of the home office users cannot use the Cisco Jabber client, and shortly after, a few more reports come in for the same error. What must the engineer check first to resolve this issue?
- A. client logs of the users
- B. alarms on the Cisco UCM Cluster
- C. alarms on the Cisco Expressways
- D. real-time monitoring toll logs for problems
Answer: C
NEW QUESTION # 49
Which step is required when configuring Cisco Webex Hybrid Message Service?
- A. Register Expressway-C to Cisco UCM.
- B. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.
- C. Add Cisco Unity Connection to Expressway-E.
- D. Add Expressway-C and Cisco UCM to the Cisco Webex Cloud.
Answer: B
NEW QUESTION # 50
An engineer must configure the zone to connect to an Expressway-E using Single NIC with NAT. The internal IP address is 192.168.10.63, and the NAT address is 203.0.113.5. What must the engineer configure on the Expressway-C to meet this requirement?
- A. traversal zone with the peer address of 203.0.113.5
- B. neighbor zone with the peer address of 203.0.113.5
- C. traversal zone with the peer address 192.168.10.63
- D. neighbor zone with the peer address 192.168.10.63
Answer: A
NEW QUESTION # 51
Refer to the exhibit.
Which two numbers match the regular expression? (Choose two.)
- A. 0
- B. 1
- C. 2
- D. d20d16d20d22
- E. d209d165d200d224
Answer: B,C
NEW QUESTION # 52
Refer to the exhibit. When configuring a search rule that routes calls to a zone, what occurs when
13358 is dialed?
- A. 13358 is sent directly to the traversal zone.
- B. 13358 is replaced by 135 and remains in the same zone.
- C. 13358 is replaced by 135, and then is sent to the traversal zone.
- D. 13358 is replaced by 135, and then is sent to the local zone.
Answer: C
NEW QUESTION # 53
In a larger Cisco Collaboration deployment, a user requires the advanced file transfer function in Cisco Jabber while the client is using Mobile and Remote Access. The deployment has multiple Expressway clusters and internal Cisco UCM clusters. Which configuration must be applied on Cisco Expressway-C for this function to be available?
- A. The HTTP Allow List must be manual or use Automatic inbound rules updated to include all Cisco IM and Presence servers.
- B. The HTTP Allow List must use Automatic update rules to include all Cisco UCM servers.
- C. The HTTP Allow List must use Automatic update rules to include all Cisco IM and Presence servers.
- D. The HTTPS Allow List must be manual or use Automatic inbound rules updated to include all Cisco IM and Presence servers.
Answer: A
Explanation:
For the AFT feature to work across Expressway, make sure that all Unified CM IM and Presence Service nodes are on the allow list, whether manually or automatically added.
Automatic Inbound Rules
Edit the HTTP Allow List
Upload Rules to the HTTP Allow List
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/config_guide/X12-
5/exwy_b_mra-expressway-deployment-guide/exwy_b_mra-expressway-deployment- guide_chapter_01000.html#task_FED878914C77C914B5FD7C7108F5CDCE
NEW QUESTION # 54
When the network requirements are configured for a new Video Mesh deployment, which firewall ports are required so that Video Mesh cascade signaling succeeds?
- A. TCP 443 and 8443
- B. UDP 33432 through 33433
- C. TCP 443 and 444
- D. UDP 5004 and 5005
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_010.html
NEW QUESTION # 55
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 # 56
Refer to the exhibit.
Refer to the exhibit. A Cisco UCM cluster in mixed mode is integrated with Cisco Expressway-C for Mobile and Remote Access endpoint registration. TLS verify mode is enabled and self-signed certificates with the same common name for Cisco Tomcat and Cisco Call Manager are uploaded to Expressway-C. A Cisco Jabber client fails to register using secure SIP. Which two configurations are the cause of the issue? (Choose two.)
- A. The Expressway-C does not allow two self-signed certificates with the same CN to be trusted.
- B. The Tomcat certificate has the incorrect FQDN for the Cisco UCM server.
- C. The incorrect secure device profile was applied to the Jabber client.
- D. The Call Manager certificate is causing a conflict.
- E. The Jabber client cannot connect to its associated phone device by using Cisco Computer Telephony Integration.
Answer: A,D
NEW QUESTION # 57
When the network requirements are configured for a new Video Mesh deployment, which firewall ports are required so that Video Mesh cascade signaling succeeds?
- A. TCP 443 and 8443
- B. UDP 33432 through 33433
- C. TCP 443 and 444
- D. UDP 5004 and 5005
Answer: A
NEW QUESTION # 58
Refer to the exhibit.
In an environment SIP devices are registered to CUCM and H.323 devices to VCS. What would be required to enable these calls to setup correctly?
- A. Disable SIP in the external zone.
- B. Change the interworking mode to On.
- C. Change the domain of SIP endpoint A to cisco.com.
- D. Create a presearch transform.
Answer: B
NEW QUESTION # 59
Which two licenses are required for the Expressway B2B feature to work? (Choose two)
- A. Advanced Networking
- B. TURN Relays
- C. Rich Media Sessions
- D. Device Provisioning
- E. Traversal Server
Answer: C,E
Explanation:
Rich Media Sessions: Determines the number of non-Unified Communications calls allowed on the Expressway (or Expressway cluster) at any one time. See the Call Types and Licensing section for more information.
Traversal Server: Enables the Expressway to work as a firewall traversal server.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/expressway/admin_guide/X14-
0/exwy_b_cisco-expressway-administrator-guide/exwy_m_managing-licensing.html
NEW QUESTION # 60
Refer to the exhibit.
When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "[email protected]" and receives the error "Cannot find your services Automatically". The engineer tries to resolve SRV records used by Jabber.
DNS A record "expressway-e.example.com" points to the Expressway-E IP and "cucm.example.com" points to the Cisco Unified Communications Manager.
Which change resolves the DNS problem?
- A. Change the collab-edge record to point to 5061.
- B. Change cisco-uds to point to the Expressway-E FQDN.
- C. Remove the cisco-uds SRV record for the external DNS.
- D. Change the priority of the SRV record for cisco-uds.
Answer: C
NEW QUESTION # 61
Which mode should be used when Call Policy is configured on Expressways?
- A. extended CPL
- B. on
- C. remote CPL
- D. local CPL, policy service, and off
Answer: B
NEW QUESTION # 62
An engineer is configuring Cisco Expressway-E and needs to implement toll fraud prevention.
Which configuration meets this requirement?
- A. Enable SIP ALG inspection on the network address translation firewall.
- B. Enable and configure the Expressway-E firewall.
- C. Configure the external firewall to block specific IPs.
- D. Enable and configure local call policy.
Answer: D
Explanation:
Toll Fraud Prevention is quite literally one of the reasons Call Policy is even available on Expressways.
NEW QUESTION # 63
Which protocol should be used to verify the connectivity for different media paths found during a call using ICE?
- A. SNMP
- B. RTP
- C. STUN
- D. TURN
Answer: C
Explanation:
https://www.cisco.com/c/en/us/td/docs/solutions/PA/ICE/icepa125.html
NEW QUESTION # 64
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)
- A. Expressway Edge must use public CA signed certificate.
- B. The Jabber client can work with public or private CA signed certificate.
- C. Expressway must generate certificate signing request.
- D. Expressway Core can use private CA signed certificate.
- E. You must upload the root certificates in the phone trust store.
Answer: A,C
NEW QUESTION # 65
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Passing the Cisco 300-820 exam is a great way for IT professionals to demonstrate their expertise in collaboration solutions that are based on Cisco cloud and edge technologies. Implementing Cisco Collaboration Cloud and Edge Solutions certification can help them advance their careers and open up new opportunities in the field of collaboration technology. It can also help organizations ensure that their IT staff has the necessary skills and knowledge to implement and manage complex collaboration solutions.
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