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300-820 Sample Questions Answers

Questions 4

Which describes what could done on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

Options:

A.

Application layer gateway could be enabled to bridge the media traffic.

B.

A static NAT route could be added to the firewall to bridge the two networks.

C.

The Expressway-E could be enabled for Dual-NIC capability.

D.

The Expressway-E could be enabled for interworking.

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Questions 5

What is a key configuration requirement for Hybrid Message Service High Availability deployment with multiple IM and Presence clusters?

Options:

A.

You must have the Intercluster Sync Agent working across your IM and Presence clusters.

B.

You must have the Intercluster Lookup Service working across all of your IM and Presence clusters.

C.

Your IM and Presence Service clusters must have Multiple Device Messaging disabled.

D.

AXL service should be activated only on the publisher of each IM and Presence cluster.

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Questions 6

An organization wants to enable a Cisco Webex connector to synchronize all employees automatically with Cisco Webex instead of using a manual list.

Where is the Webex Hybrid Directory Service configured?

Options:

A.

Install Cisco Directory Connector on a Microsoft Windows Domain server and configure the software and Webex Control Hub.

B.

Enable the directory service in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

C.

Enable the directory service on Cisco Expressway Edge for Office 365 or Cisco Expressway Core for internal Active Directory and add the service in Webex Control Hub.

D.

Install the Cisco Express Connector and configure the device in Cisco Unified Communications Manager under Cisco Unified Serviceability and add the service in Webex Control Hub.

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Questions 7

Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)

Options:

A.

When Expressway Core works with VMN clusters, Expressway Core decides which VMN is used for signaling/media connection.

B.

Cloud-registered devices choose a VMN cluster based on the lowest STUN round trip delay.

C.

The cascading traffic between VMN must bypass the firewall.

D.

When Cisco Unified Communications Manager works with multiple VMNs, Cisco Unified CM decides which VMN is used for signaling connection.

E.

A VMN can terminate a media connection while operating in maintenance mode.

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Questions 8

An engineer is deploying an Expressway solution for the SIP domain Cisco.com. Which SRV record should be configured in the public DNS to support inbound B2B calls?

Options:

A.

_collab-edge._tls.cisco.com

B.

_cisco-uds._tcp.cisco.com

C.

_sip._tcp.cisco.com

D.

_cuplogin._tcp.cisco.com

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Questions 9

Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)

Options:

A.

unsolicited notify

B.

RFC 2833

C.

KPML

D.

passthrough

E.

H.245 user input indication

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Questions 10

A Jabber user is being prompted to trust the Expressway-E certificate when using Mobile and Remote Access. The administrator has validated that the Expressway-E certificate is being trusted by the machine running the Jabber client.

What else can be done to solve this problem?

Options:

A.

Create a new CSR with new information on the SAN field.

B.

Include Cisco Unified Communications Manager registration domain in the Expressway-E certificate as a SAN.

C.

Change the domain name.

D.

Change the FQDN of the Expressway.

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Questions 11

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?

Options:

A.

Configure the Expressway-C Traversal Client zone Peer 1 address with the fully qualified domain name of the Expressway-E.

B.

Configure the Expressway-C Traversal Client zone transport protocol with TCP.

C.

Add a server certificate to the Expressway-C that is signed by a certificate authority.

D.

Add an intermediate certificate to the Expressway-C that is signed by a certificate authority.

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Questions 12

Which two statements about Expressway media traversal are true? (Choose two.)

Options:

A.

Expressway Control is the traversal server installed in the DMZ.

B.

The Expressway Edge must be put in a firewall DMZ segment.

C.

Cisco Unified Communications Manager zone can be either traversal server or client.

D.

The Unified Communications traversal zone can be used for Mobile and Remote Access.

E.

Both Expressway Edge interfaces can be NATed.

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Questions 13

Which mode should be used when Call Policy is configured on Expressways?

Options:

A.

extended CPL

B.

local CPL, policy service, and off

C.

on

D.

remote CPL

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Questions 14

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?

Options:

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.

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Questions 15

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?

Options:

A.

Create a presearch transform.

B.

Change the domain of SIP endpoint A to cisco.com.

C.

Disable SIP in the external zone.

D.

Change the interworking mode to On.

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Questions 16

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?

Options:

A.

The search rule must be changed to continue on match

B.

The existing zone using ID 7 must be deleted

C.

More bandwidth must be added to the appropriate pipes

D.

The underlying DNS issue must be resolved

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Questions 17

Where are voice calls handled in a Cisco Jabber hybrid cloud-based deployment with Cisco Webex Platform Service?

Options:

A.

Voice calls use Webex Calling platform for call control and use hybrid media nodes for local conferencing.

B.

Voice calls use local media nodes to keep traffic internal for internal traffic and use Webex Calling for external calls.

C.

Voice call use Cisco Unified Communications Manager for local calls and Webex Calling for external calls.

D.

Voice calls use local Cisco Unified Communications Manager for all calls.

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Questions 18

Which connection does the traversal zone configuration define?

Options:

A.

Expressway-E and Collaboration Endpoints

B.

Cisco UC and Cisco Unified Presence Server

C.

Cisco Expressway-C and Cisco Expressway-E platforms

D.

Cisco UCS E-Series and Cisco UCM

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Questions 19

Which two licenses are required for the B2B feature to work? (Choose two.)

Options:

A.

Traversal Server

B.

TURN Relays

C.

Rich Media Sessions

D.

Advanced Networking

E.

Device Provisioning

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Questions 20

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?

Options:

A.

any number in the drop-down menu

B.

any number in the dialog box

C.

any number between 1-128

D.

any number between 1-65534

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Questions 21

What is a requirement when configuring the Cisco Webex Hybrid Message account for accessing the API of the Cisco UCM IM and Presence Service?

Options:

A.

Add a new end-user with the “Standard AXL API Access” role

B.

Use an application user with only the “Standard CTI Allow Control of All Devices” role

C.

Use an application user not the main administrator account with the “Standard AXL API Access” role

D.

Use the main administrator account if it includes the “Standard AXL API Access” role

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Questions 22

Refer to the exhibit.

What is the result of a transformation applied to alias 88514?

Options:

A.

98851@ccnpcollab.com

B.

88513@ccnpcollab com

C.

88514@ccnpcollab.com

D.

88515@ccnpcollab.com

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Questions 23

A MRA deployment is being configured where one of the requirements is for registered Jabber users to pull directory photos from an internal server. What should be configured on the Expressway-C so that MRA registered clients reach this server?

Options:

A.

A search rule must be created to route the requests to Cisco UCM.

B.

The directory photo server must be added to the HTTP allow list.

C.

A neighbor zone must be created to the directory photo server.

D.

The directory photo server FQDN must be added to the Expressway-C certificate.

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Questions 24

Which media encryption mode can be configured on an Expressway zone?

Options:

A.

Advanced Encryption Standard

B.

IPsec

C.

Triple Data Encryption Standard

D.

force unencrypted

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Questions 25

What is one of the user-related prerequisites for Jabber Team Messaging Mode Installation?

Options:

A.

Create user accounts in Cisco Webex Control Hub only.

B.

Create user accounts in Cisco Unified Communications Manager only.

C.

Create user accounts in Cisco Unified IM and Presence.

D.

Create user accounts in Cisco Unified CM and Cisco Webex Control Hub.

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Questions 26

Refer to the exhibit.

When a Jabber user attempts to connect from outside of the organization, the user enters the login information as "user@example.com" 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?

Options:

A.

Change cisco-uds to point to the Expressway-E FQDN.

B.

Change the collab-edge record to point to 5061.

C.

Remove the cisco-uds SRV record for the external DNS.

D.

Change the priority of the SRV record for cisco-uds.

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Questions 27

In a Mobile and Remote Access deployment, where must communications be encrypted with TLS?

Options:

A.

Cisco Expressway-E and endpoints outside the enterprise

B.

Cisco Expressway-C, Cisco Unified Communications Manager, and IM&P

C.

Cisco Expressway-C, Cisco Expressway-E, and Cisco Unified Communications Manager

D.

Cisco Expressway-C, Cisco Expressway-E, and endpoints outside the enterprise

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Questions 28

Refer to the exhibit. Logins and failing via mobile and remote access. How is this resolved?

Options:

A.

Mobile and remote access login has not been enabled for the domain configured in the Expressway-C. The domain must be edited to allow Cisco UCM registrations.

B.

SIP is disabled on the Expressway-E. The SIP protocol must be enabled on the server.

C.

No Cisco UCM servers are configured in the Expressway-C. Servers must be added for CallManager and IM and Presence services.

D.

Although a traversal client zone exists, there is no Unified Communications traversal client zone. One must be created.

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Exam Code: 300-820
Exam Name: Implementing Cisco Collaboration Cloud and Edge Solutions (300-820 CLCEI)
Last Update: Jan 23, 2025
Questions: 96
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