300-820 Dumps PDF 2024 Program Your Preparation EXAM SUCCESS [Q32-Q50]

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300-820 Dumps PDF 2024 Program Your Preparation EXAM SUCCESS

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NEW QUESTION # 32
Refer to the exhibit.

An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.
Which action resolves this error?

  • A. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
  • B. Add a server certificate to the Expressway-C that is signed by a certificate authority.
  • C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
  • D. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

Answer: B


NEW QUESTION # 33
Refer to the exhibit.

A new neighbor zone is added for a new Cisco Meeting Server, but the zone is showing a SIP status of failed from the time the zone it was created. What should be done to resolve this issue?

  • A. The underlying DNS issue must be resolved
  • B. More bandwidth must be added to the appropriate pipes
  • C. The existing zone using ID 7 must be deleted
  • D. The search rule must be changed to continue on match

Answer: D


NEW QUESTION # 34
Refer to the exhibit.

An Expressway-C and Expressway-E are configured for B2B calling and the Expressway- E zone is set to TLS Verify Currently, calls do not reach the Expressway-C. The Traversal Client zone on the Expressway-C for B2B reports the information in the exhibit for the Peer 1 address.
Which action resolves this error?

  • A. Configure the Expressway-C Traversal Client zone transport protocol with TCP.
  • B. Add a server certificate to the Expressway-C that is signed by a certificate authority.
  • C. Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.
  • D. Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

Answer: C


NEW QUESTION # 35
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 7001 from Expressway-E to Expressway-C
  • B. port 7001 from Expressway-C to Expressway-E
  • C. port 2222 from Expressway-E to Expressway-C
  • D. port 2222 from Expressway-C to Expressway-E

Answer: B


NEW QUESTION # 36
Which two statements about configuring mobile and remote access on Cisco TelePresence Video Communication Server Expressway are true? (Choose two.)

  • A. The traversal client zone and the traversal server zone Media encryption mode must be set to Force encrypted.
  • B. The traversal client zone on Expressway-C Media encryption mode must be set to Auto.
  • C. The traversal client zone and the traversal server zone must be set to SIP TLS with TLS verify mode set to On.
  • D. The traversal client zone and the traversal server zone Media encryption mode must be set to Auto.
  • E. The traversal server zone on Expressway-C must have a TLS verify subject name configured.

Answer: A,C


NEW QUESTION # 37
Which step is taken when configuring a Cisco Expressway solution?

  • A. Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.
  • B. Disable H.323 mode on the Expressway-E.
  • C. Enable static NAT on the Expressway-E only.
  • D. Configure the Expressway-E by using a non-traversal server zone.

Answer: C


NEW QUESTION # 38
A company has a single Expressway-E that exhibits high resource utilization. An engineer checks the logs and finds numerous fraudulent attempts from sip:[email protected]. Where must the engineer go to configure a call policy rule and block the desired URI?

  • A. Configuration > Call History > Policy > Rules
  • B. Call History Configuration > Call Policy > Rules
  • C. Configuration > Call Policy > Rules
  • D. Configuration > Policy > Inbound > Rules

Answer: C


NEW QUESTION # 39
An administrator is deploying Cisco Expressways for Mobile and Remote Access. The registration domain is "example.com", and the Expressway-E FQDN is "expe.example.com". Cisco Jabber clients on the internet cannot discover services via DNS lookup. Which SRV records must be configured in the public DNS to allow Service Discovery?

  • A. _cisco-uds_tcp.example.com
  • B. _cisco-uds_tcp.expe.example.com
  • C. _collab-edge._tls.example.com
  • D. _collab-edge_tls.expe.example.com

Answer: C


NEW QUESTION # 40
Which media encryption mode can be configured on an Expressway zone?

  • A. force unencrypted
  • B. Triple Data Encryption Standard
  • C. Advanced Encryption Standard
  • D. IPsec

Answer: C


NEW QUESTION # 41
Which statement about the Cisco Webex hybrid service is true?

  • A. Hybrid Message service works only with Jabber cloud deployment.
  • B. Directory Connector must be deployed for OBTP to work with on-premises video devices.
  • C. Expressway Connector is required for an on-premises Exchange server.
  • D. Directory Connector is required for Azure AD.

Answer: C


NEW QUESTION # 42
Within which cache timeline do the Webex App endpoints perform a STUN test to calculate round-trip delay time to available media node clusters?

  • A. 1 hour
  • B. 4 hours
  • C. 6 hours
  • D. 2 hours

Answer: C


NEW QUESTION # 43
What are two reasons why port 8443 is unreachable from the Internet to the Expressway-E? (Choose two.)

  • A. The SRV record for _cisco-uds is misconfigured.
  • B. Transform is not configured on Expressway-E.
  • C. The firewall is blocking the port.
  • D. The Unified Communications zone is down.
  • E. The MRA license is missing on the Expressway-E.

Answer: A,C


NEW QUESTION # 44
When an Expressway-E is configured for static NAT, which Session Description Protocol attribute is modified to reflect the NAT address?

  • A. SIP record route
  • B. SDP b-line
  • C. SDP c-line
  • D. SDP m-line

Answer: A


NEW QUESTION # 45
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. Another node in the cluster is used and an intra-cluster cascade between the two Video Mesh nodes is formed.
  • B. The call is queued.
  • C. Another node in the cluster is used and an intra-cluster cascade between Webex and the new Video Mesh node is formed.
  • D. The call fails.

Answer: C


NEW QUESTION # 46
An engineer reviews the configuration of a pair of Expressway servers for a company with the domain example.com. The company allows toll fraud calls to reach the Cisco UCM only when it expects externally registered devices to call internal 5-digit extensions. The search history shows that the fraudulent calls have a destination URI of 8 or more digits and several domains. What must the engineer configure to prevent all toll fraud calls from going past the Expressway-E to the internal network?

  • A. search rules to only route calls with a destination domain of example.com on the Expressway-E
  • B. CPL that blocks calls with a destination domain other than example.com on the Expressway-C.
  • C. CPL to block calls with a destination URI with 8 or more digits on the Expressway-E
  • D. search rules to only route calls with a destination URI of 5 to 8 digits long on the Expressway-E

Answer: C


NEW QUESTION # 47
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 # 48
A company has an on-premises Cisco collaboration cluster that contains Cisco UCM, IM and Presence, and Cisco Webex in the cloud. The company wants to integrate the on-premises infrastructure with Webex to enable interoperability with the Webex App. An engineer already configured the cluster in Cisco UCM, IM and Presence, and the organization in the Webex Control Hub. Which action must the engineer take to complete the configuration?

  • A. Open the TCP 443 port from IM and Presence to Webex Cloud.
  • B. Deploy a Webex Device Connector.
  • C. Deploy Directory Connector.
  • D. Deploy a Cisco Expressway Message Connector host.

Answer: C


NEW QUESTION # 49
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. Neighbor Zone
  • B. Any
  • C. Traversal Zone
  • D. All

Answer: B

Explanation:
The dropdown options for the Source field are -
*Any
*All zones
*Local Zone
*Named
Source:
https://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/expressway/config_guide/X8-
8/Cisco-Expressway-Basic-Configuration-Deployment-Guide-X8-8.pdf


NEW QUESTION # 50
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