[Mar-2026] Dumps Brief Outline Of The 300-820 Exam - DumpsFree
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NEW QUESTION # 32
Which step is taken when configuring a Cisco Expressway solution?
- A. Enable static NAT on the Expressway-E only.
- B. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.
- C. Disable H.323 mode on the Expressway-E.
- D. Configure the Expressway-E by using a non-traversal server zone.
Answer: A
Explanation:
Explanation
NEW QUESTION # 33
Which step is required when configuring Cisco Webex Hybrid Message Service?
- A. Register Expressway-C to Cisco Unified Communications Manager.
- B. Add Cisco Unity Connection to Expressway-E.
- C. Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.
- D. Register Expressway-C Connector Hosts to the Cisco Webex Cloud.
Answer: D
NEW QUESTION # 34
Which two statements about Mobile and Remote Access certificate are true? (Choose two.)
- A. The Jabber client can work with public or private CA signed certificate.
- B. Expressway must generate certificate signing request.
- C. Expressway Edge must use public CA signed certificate.
- D. Expressway Core can use private CA signed certificate.
- E. You must upload the root certificates in the phone trust store.
Answer: A,D
Explanation:
A certificate chain: a certificate can be signed by a Certificate Authority (CA) using its own private key. In turn, therefore, a certificate can be verified as being signed by a CA by checking the signature against the CA's certificate (public key). Web browsers and other clients have a list of CA certificates that they trust, and can thus verify the certificates of individual servers.
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-
9/Cisco-Expressway-Certificate-Creation-and-Use-Deployment-Guide-X8-9.pdf CA-signed certificates (Recommended) - Users are not prompted because you are installing the certificate on the devices yourself. CA-signed certificates can be signed by a Private CA or a Public CA.
https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/14_1/cjab_b_planning-guide-for- jabber141/cjab_m_planning-security-and-certificates-129.html
NEW QUESTION # 35
Refer to the exhibit.
What is the result of a transformation applied to alias 88514?
- A. [email protected]
- B. [email protected]
- C. [email protected]
- D. 88513@ccnpcollab com
Answer: C
NEW QUESTION # 36
Refer to the exhibit.
Which inbound connection should an administrator configure on the outside firewall?
- A. Media: UDP 36000 to 36011
- B. HTTPS (tunneled over SSH between C and E): TCP 2222
- C. XMPP TCP 5222
- D. SIP TCP 5061
Answer: D
NEW QUESTION # 37
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 use Automatic update rules to include all Cisco UCM servers.
- B. The HTTP Allow List must use Automatic update rules to include all Cisco IM and Presence servers.
- C. The HTTPS Allow List must be manual or use Automatic inbound rules updated to include all Cisco IM and Presence servers.
- D. The HTTP Allow List must be manual or use Automatic inbound rules updated to include all Cisco IM and Presence servers.
Answer: D
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 # 38
Which two statements about Zones on Cisco Expressways are correct? (Choose two.)
- A. You can register endpoints to default zone.
- B. Bandwidth for calls between endpoints in the same zone cannot be restricted.
- C. A neighbor zone connects Cisco Expressway Core to other systems via SIP or H.323.
- D. Endpoints are associated to default subzone or any customized subzone depending on the IP address of the endpoint.
- E. A neighbor zone connects Cisco Expressway Core to Cisco Expressway for NAT, PAT, and firewall traversal.
Answer: B,E
NEW QUESTION # 39
An Expressway pairs deployed for Mobile and Remote Access. An administrator installs a new server certificate on the Expressway-E. After installing the new certificate, the UC Traversal zone between Expressway-C and Expressway-E is active. Still, Jabber Mobile and Remote Access clients cannot log in over the Expressway. The certificate Common Name is the FQDN of Expressway-E, "expe01 example.com", and the certificate contains no additional names. Which Subject Alternate Name must be added to the certificate to allow Jabber Mobile and Remote Access clients to log in successfully?
- A. Cisco UCM cluster FQDN, "cucmcluster.example.local"
- B. FQDN of the Expressway-E, "expe01.example.com"
- C. FQDN of the Expressway-C, "expc01.example.local"
- D. registration domain, "example.com" or "collab-edge.example.com"
Answer: D
NEW QUESTION # 40
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 Explicit Proxy
- B. Distorting Proxy
- C. Transparent Inspecting Proxy
- D. Reverse Proxy
Answer: C
NEW QUESTION # 41
An administrator must configure the DNS SRV records for Mobile and Remote Access for a company with the domain example.com, the Expressway-E FQDN is ExpE.example.com, and the Expressway-C FQDN is Exp-C.example.com. What must the administrator configure to allow external clients to discover the Expressway-E server?
- A. SRV record _collab-edge._tls.example.com that resolves ta ExpE.example.com on port 5061
- B. SRV record _cisco-uds._tcp.example.com that resolves to ExpE.example.com on port 5061
- C. SRV record _cisco-uds._tcp.example.com that resolves to ExpC.example.com on port 8443
- D. SRV record _collab-edge._tls.example.com that resolves to ExpE.example.com on port 8443
Answer: D
NEW QUESTION # 42
Which method is used to send the incoming call request to the client when the traversal server receives an incoming call for the traversal client?
- A. Opening an outbound connection directly to the client through the firewall
- B. Requesting for permission from the firewall
- C. Using an existing keep-alive connection opened by the client
- D. Opening an inbound connection directly to the client through the firewall
Answer: C
NEW QUESTION # 43
In Cisco Expressway, which information from an incoming search request does the pre-search transform configuration allow to be modified?
- A. called address
- B. calling party
- C. Source IP address
- D. CUD
Answer: A
NEW QUESTION # 44
What is a benefit of Cisco Webex Messenger Cloud deployment?
- A. There is no additional cost to use a cloud deployment.
- B. Cloud deployment allows interoperability between Cisco Jabber and Webex Teams users.
- C. Cloud deployment is faster than using an on-premises deployment.
- D. Cloud deployment is more secure than an on-premises deployment.
Answer: B
Explanation:
Cisco Webex Messenger integrates with Cisco Unified Communications Manager and Cisco Webex Meeting Center to support click-to-call, phone control, voice, video, visual voicemail, and web collaboration. It allows you to communicate and collaborate effectively from anywhere you have an Internet connection.
NEW QUESTION # 45
After an engineer implements load balancing in the Cisco CMS cluster, they observe that shortly after the second Call Bridge is added to the cluster, calls into a space randomly disconnect when the calls are from endpoints registered with Cisco UCM. Which action resolves the issue?
- A. Enable "Accept Unsolicited Notification" on the SIP Trunk security profile.
- B. Enable "Accept Out-of-dialog REFER" on the SIP Trunk security profile.
- C. Enable "Accept Presence Subscription" on the SIP Trunk security profile on Cisco UCM.
- D. Enable "Accept Replaces Header" on the SIP Trunk security profile on Cisco UCM.
Answer: D
NEW QUESTION # 46
Refer to the exhibit.
Refer to the exhibit. The neighbor zone to Cisco UCM fails to come up when TLS verify mode is enabled on the Expressway-C for B2B traffic. Which Issue correctly describes the cause of the error?
- A. Subject Alternative Name fields are longer than 999 characters.
- B. The neighbor system FQDN is missing from Subject Alternative Name attributes of the certificate.
- C. TLS verify mode is enabled on the neighbor zone.
- D. The certificate has a key length of 8192 bits.
Answer: B
NEW QUESTION # 47
An engineer wants to configure a zone on the Expressway-E to receive communications from the Expressway-C in order to allow inbound and outbound calls.
How is the peer address configured on the Expressway-C when Expressway-E has only one NIC enabled and is using static NAT mode?
- A. Cisco UCM DHCP
- B. Expressway-E DHCP
- C. Cisco UCM FQDN
- D. Expressway-E FQDN
Answer: D
Explanation:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-
11/Cisco-Expressway-Basic-Configuration-Deployment-Guide-X8-11-4.pdf
NEW QUESTION # 48
Refer to the exhibit.
Refer to the exhibit. An administrator set up a B2B interop with a business partner running a Microsoft Lync environment and can successfully make outbound video calls to [email protected]. Inbound calls to [email protected], however, are failing. A quick SRV search returns the records in the exhibit. Which record must be modified to resolve this challenge?
- A. _sips._tcp.ciscovoice.com
- B. _collab-edge._tls.ciscovoice.com
- C. _sipfederationtcp._tcp.ciscovoice.com
- D. _h323ls._udp.ciscovoice.com
Answer: C
NEW QUESTION # 49
A collaboration engineer is configuring Cisco Webex Edge for video conferencing devices to provide support for Cisco Webex Control Hub configuration management. Which configuration control mode must be set on Cisco UCM for Control Hub to manage the on-premises device configuration?
- A. Cisco UCM only
- B. endpoing only
- C. Webex Edge only
- D. Cisco UCM and endpoint
Answer: A
NEW QUESTION # 50
An engineer must fix broken SSH tunnels between Expressway-C (192.168.10.5) and Expressway-E (192.168.20.5). The engineer is advised that the packet capture shows the required packets for the SSH tunnels leaving the Expressway-C but not reaching the Expressway-E. Which firewall configuration must the engineer allow to resolve this issue?
- A. port 2222 from Expressway-C to Expressway-E
- B. port 7001 from Expressway-E to Expressway-C
- C. port 2222 from Expressway-E to Expressway-C
- D. port 7001 from Expressway-C to Expressway-E
Answer: A
NEW QUESTION # 51
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. Write a custom normalization script since the "vcs-interop" normalization script does not allow registrations
- B. Enable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service
- C. Change the SIP profile on the SIP trunk for the Expressway-E to Standard SIP Profile for TelePresence Endpoint
- D. Change the "Incoming Port" in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations
Answer: D
Explanation:
In order to correct this issue, change the SIP port on the SIP Trunk Security Profile that is applied to the existing SIP trunk configured in CUCM and the Expressway-C neighbor zone for CUCM to a different port such as 5065.
NEW QUESTION # 52
Jabber cannot log in via Mobile and Remote Access. You inspect Expressway-C logs and see this error message:
XCP_JABBERD Detail="Unable to connect to host '%IP%', port 7400:(111) Connection refused"
Which is the cause of this issue?
- A. Rich Media Session licenses are not activated on Expressway-E.
- B. Expressway-E is listening on the wrong IP interface.
- C. The destination port for Expressway-E is set to 7400 instead of 8443 on the Expressway-C.
- D. The XCP Service is not activated on Expressway-E.
Answer: B
NEW QUESTION # 53
Refer to the exhibit.
Calls to locally registered endpoints are failing. At present, there are two endpoints registered locally to this Expressway. An H.323 endpoint with an alias of "EndpointA" is registered, and a SIP endpoint with an alias of "[email protected]" is also registered. How is this issue resolved?
- A. The dialplan must be redesigned to use the transforms to convert the alias into SIP URI format and then use separate search rules for each format that needs to be dialed within the local zone.
- B. The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of "Standards-Based".
- C. Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the
- D. The calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.
Answer: A
Explanation:
pod1.local domain as that is owned by the local system. Calls to any other domain would work.
NEW QUESTION # 54
Which media encryption mode can be configured on an Expressway zone?
- A. Advanced Encryption Standard
- B. IPsec
- C. Triple Data Encryption Standard
- D. force unencrypted
Answer: D
NEW QUESTION # 55
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