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Cisco 300-820 Implementing Cisco Collaboration Cloud and Edge Solutions (300-820 CLCEI) Exam Practice Test

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Total 207 questions

Implementing Cisco Collaboration Cloud and Edge Solutions (300-820 CLCEI) Questions and Answers

Question 1

A Cisco Webex Hybrid Video Mesh Node can be installed in the DMZ and on the internal network.

Which statement is true?

Options:

A.

Webex Cloud supports either a DMZ-based Mesh Node for security or an internal-based Mesh Node for media control only.

B.

Installing a Video Mesh Node in the DMZ requires you to open TCP and UDP port 4444 in your internal firewall for full clustering functionality.

C.

Installing a Video Mesh Node in the DMZ requires the external firewall to allow UDP traffic from ANY port to the address of the Video Mesh Nodes via port 5004.

D.

Using internal Video Mesh Node also works due to Mobile and Remote Access setup for Webex Teams clients. A DMZ node is added for extra security.

Question 2

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.

Question 3

A Webex engineer is configuring SSO in Control Hub with Active Directory Federation Services. The engineer wants to authenticate users for all the applications that they are given rights to. The engineer also wants to eliminate further prompts when users switch applications during a particular session. Which action tells ADFS the fields to map to Webex to identify a user?

Options:

A.

Send LDAP attributes as claims.

B.

Create claim rules for Webex authentication

C.

Add a relving party trust to the ADFS.

D.

Map the E-mail-addresses LDAP attribute to the uid outgoing claim type.

Question 4

How do the Cisco Expressway-C and Expressway-E servers transmit media to each other?

Options:

A.

RTP and RTCP are multiplexed for all internal and external video endpoints across the traversal link using UDP.

B.

When the Expressway-C receives RTP and RTCP media, it establishes a new UDP socket with the Expressway-E.

C.

RTP and RTCP are multiplexed for all internal and external video endpoints across the traversal link using TLS.

D.

When the Expressway-E receives RTP and RTCP media, it establishes a new UDP socket with the Expressway-C.

Question 5

A company has enabled ICE to optimize call flows and improve video quality between their Cisco Collaboration endpoints internally and externally.

For which reason would you see activity on the TURN server when a call is established between two external endpoints?

Options:

A.

The video call is using encryption, which is not supported by ICE with CUCM 12.5

B.

ICE cannot reduce the packet loss on the link

C.

A STUN cannot punch holes in the firewall

D.

The video call is using 4K resolution, which is not supported by ICE with CUCM 12.5

Question 6

What is configured on the Expressway-E to successfully route calls from Expressway-C on the internal network to the Internet?

Options:

A.

Application layer gateway is enabled to bridge the media traffic.

B.

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

C.

The Expressway-E is enabled for Dual-NIC capability.

D.

The Expressway-E is enabled for interworking

Question 7

Which dial plan settings can be used to set up different regulations according to the protocol (SIP or H.323) or the source of the query?

Options:

A.

presearch transforms

B.

search rules

C.

call policy

D.

policy services

Question 8

What is the last step for domain management in Cisco Webex Control Hub if an engineer adds users already signed in with the company domain?

Options:

A.

Publish a domain.

B.

Add a domain.

C.

Verify a domain.

D.

Claim a domain.

Question 9

Refer to the exhibit.

Question # 9

When configuring a search rule that routes calls to a zone, what occurs when 13358 is dialed?

Options:

A.

13358 is replaced by 135, and then is sent to the local 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 sent directly to the traversal zone.

Question 10

Question # 10

Refer to the exhibit. Call policy rules on an Expressway-E prevent external callers from the internet from calling a VIP whose URI is vip@cisco.com. Which additional configuration setting is required for this call policy to function as intended?

Options:

A.

The default zone on the Expressway-E must not be configured to treat as authenticated.

B.

A search rule must be configured with an extract match forvip^cisco.com to pass the call to the Expressway-C.

C.

The Cisco TelePresence endpoint registered with the URI vip@cisco.com must be set in *do not disturb" mode.

D.

SIP TLS must be disabled on the Expressway-E.

Question 11

Refer to the exhibit.

Question # 11

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 “EndpointB@pod1.local” is also registered. How is this issue resolved?

Options:

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 calls are failing because there are insufficient licenses. Additional licenses must be installed for the Expressway to route these calls.

C.

The current search rule does not match the call, so the search rule must be modified to include a SIP Variant of “Standards-Based”.

D.

Calling parties are placing calls with the wrong domain. End-users must be instructed not to use the

pod1.local domain as that is owned by the local system. Calls to any other domain would work.

Question 12

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?

Options:

A.

Expressway-E FQDN

B.

Cisco UCM FQDN

C.

Expressway-E DHCP

D.

Cisco UCM DHCP

Question 13

Question # 13

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.)

Options:

A.

The Tomcat certificate has the incorrect FQDN for the Cisco UCM server.

B.

The Jabber client cannot connect to its associated phone device by using Cisco Computer Telephony Integration.

C.

The incorrect secure device profile was applied to the Jabber client.

D.

The Expressway-C does not allow two self-signed certificates with the same CN to be trusted.

E.

The Call Manager certificate is causing a conflict.

Question 14

An organization with a domain name of example.com.

Which two SRV records are valid for a SIP and H.323 communication? (Choose two.)

Options:

A.

_sips._tcp.example.com

B.

_sips._udp.example.com

C.

_h323ls._udp.example com

D.

_h323ls._tcp.example.com

E.

_collab-edge._tls.example.com

Question 15

Question # 15

Refer to the exhibit. The web server is set up to store contact photos and the Cisco Jabber-config.xml file is updated for all clients. After these changes, Jabber for Windows users cannot view the contact photos when they are connected via Mobile and Remote Access. Which action resolves the issue?

Options:

A.

Update the “PhotoUriWithToken’ entry to “Https”.

B.

Update the contact photos to “png”.

C.

Add the web-server address within the HTTP server allow list on the Expressway-C.

D.

Add the web-server address within the HTTP server allow list on the Expressway-E.

Question 16

Which part of a hybrid cloud-based deployment with Cisco Webex Messenger Service is used for meeting capabilities?

Options:

A.

Cisco Unified CM is always used for meeting capabilities.

B.

Depending on the media flow, the Webex Meeting Center or local Cisco Unified CM meeting resources are used for meeting capabilities.

C.

Depending on the origin of the user, the Webex Meeting Center or local Cisco Unified Communications Manager meeting resources are used for meeting capabilities.

D.

Cisco Webex Meeting Center is always used for meeting capabilities.

Question 17

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?

Options:

A.

FQDN of the Expressway-C, “expc01.example.local”

B.

registration domain, “example.com” or “collab-edge.example.com”

C.

Cisco UCM cluster FQDN, “cucmcluster.example.local”

D.

FQDN of the Expressway-E, “expe01.example.com”

Question 18

Which entry in the public (external) DNS is valid to configure DNS SRV records for a Cisco Mobile and Remote Access solution?

Options:

A.

_cisco-uds._tcp.

B.

_cisco-mra._tls.

C.

_collab-edge._tls.

D.

_cisco-expwy._tls.

Question 19

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

Question 20

What is the default DSCP value for video traffic that is routed through an Expressway server?

Options:

A.

36

B.

24

C.

0

D.

24

Question 21

When does the Webex App Endpoint send media to the Video Mesh cluster during a meeting?

Options:

A.

when the Webex cloud media services are offline

B.

when there is insufficient bandwidth at the MPLS WAN edge

C.

when the round-trip delay to the Video Mesh cluster is shorter than the round-trip delay to the Webex cloud media services

D.

when there is insufficient bandwidth at the internet edge

Question 22

Question # 22

Refer to the exhibit. An engineer is configuring Cisco Expressway-C to discover Cisco UCM by using an IP address and a TCP connection. After the configuration is saved, errors occur.

Which two changes must be made to resolve the errors? (Choose two.)

Options:

A.

Configure an application user with Cisco Computer Telephony Integration-enabled privileges in Cisco UCM.

B.

Configure an application user with Administrative XML privileges in Cisco UCM.

C.

Upload a valid Cisco Tomcat certificate from the Cisco UCM to Expressway-C.

D.

Set TLS verify mode to Off.

E.

Configure an HTTP allow list that contains the Cisco UCM

Question 23

Question # 23

Refer to the exhibit. A Cisco Webex device on an enterprise network has identified the given STUN round-trip delays in milliseconds to the enterprise Video Mesh clusters and two Webex Cloud Media clusters during the call setup. Which correct sequence of clusters is the client connecting to?

Options:

A.

US West Coast WCMC. If US West Cost WCMC is full, then Europe WCMC because clients select clusters in the order of SRT delays.

B.

DC Europe. If DC Europe is full, DC APAC because clients select on-premises clusters in the order of SRT delays before using cloud resources.

C.

DC Europe. If DC Europe is full, US West Coast WCMC because clients select resources in the order of SRT delays but ignore SRTs greater than 250 ms.

D.

US West Coast WCMC. Clients continuously monitor DC US cluster and reconnect when DC US are available to save bandwidth.

Question 24

What is the Cisco-recommended key length in bits for a Cisco Expressway certificate?

Options:

A.

1024

B.

2048

C.

4096

D.

8192

Question 25

What is the first step to restoring an Expressway cluster from a backup?

Options:

A.

use the backup that is specific to each Expressway peer in the cluster

B.

upgrade each Expressway peer to the latest Expressway software

C remove each Expressway peer from the cluster

C.

add all the Expressway peers to the cluster

Question 26

Refer to the exhibit.

Question # 26

Mobile Cisco Jabber cannot register with on-premises Cisco Unified Communications Manager using Mobile and Remote Access. Some logs were captured on Expressway Edge.

Which action corrects this problem?

Options:

A.

Ensure that the peer address does not match the Common Name on certificate.

B.

Ensure that the _cisco-uds SRV record has been configured.

C.

Ensure that the credential has been entered correctly.

D.

Ensure that the SIP domains are added on Expressway Core.

Question 27

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?

Options:

A.

port 2222 from Expressway-E to Expressway-C

B.

port 7001 from Expressway-C to Expressway-E

C.

port 7001 from Expressway-E to Expressway-C

D.

port 2222 from Expressway-C to Expressway-E

Question 28

A new set of Expressway-C and Expressway-E is deployed and was configured for Mobile and Remote Access with basic settings. How must the engineer edit the inbound allow list rule?

Options:

A.

Go to Configuration > Unified Communications > HTTP allow list > Editable inbound rules to view.

B.

Go to Configuration > MRA > HTTP allow rules > Editable inbound rules to view, create, modify, or delete HTTP allow list rules.

C.

Go to Configuration > MRA > Editable Inbound rules to view, create, modify, or delete HTTP allow list rules.

D.

Go to Configuration > Unified Communications > MRA > HTTP allow list > Editable inbound rules to view, create, modify, or delete HTTP allow list rules.

Question 29

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

Question 30

Refer to the exhibit.

Question # 30

Which two outbound connections should an administrator configure on the internal firewall? (Choose two.)

Options:

A.

XMPP: TCP 7400

B.

SIP: TCP 7001

C.

SIP TCP 5061

D.

Media: UDP 36012 to 59999

E.

HTTPS: TCP 8443

Question 31

Question # 31

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 Jane.doe@ciscovideo.com. Inbound calls to paul.smith@ciscovoice.com, however, are failing. A quick SRV search returns the records in the exhibit. Which record must be modified to resolve this challenge?

Options:

A.

_h323ls._udp.ciscovoice.com

B.

_sipfederationtcp._tcp.ciscovoice.com

C.

_sips._tcp.ciscovoice.com

D.

_collab-edge._tls.ciscovoice.com

Question 32

Which statement about scheduling Expressway backups is true?

Options:

A.

It is not supported on the application.

B.

It is allowed from the application CLI of the Expressway only.

C.

It is allowed from the application CLI and GUI of the Expressway.

D.

It is allowed from the application GUI of the Expressway only.

Question 33

How are Cisco Webex Video Mesh deployments supported?

Options:

A.

Video Mesh Dual NIC are supported in demilitarized deployments.

B.

Mixed Single NIC and Dual NIC are supported in the same data center deployments.

C.

Clustering Video Mesh Nodes over the WAN are supported if Round Trip Time is low.

D.

IPv6 and IPv4 deployments are supported for Video Mesh clusters.

Question 34

What it is the purpose of using ICE for Mobile and Remote Access endpoints in the Cisco Collaboration infrastructure?

Options:

A.

ICE controls the bandwidth usage for Cisco Collaboration endpoints if the endpoints are located outside the company network.

B.

ICE enables Cisco Collaboration endpoints to determine if there is direct connectivity between them.

C.

ICE uses FAST updates to optimize the video quality in case of packet loss. This technology is available only from Cisco Unified CM version 11.5 and later.

D.

ICE enablement allows for the Cisco Collaboration endpoint to register through Expressway servers to Cisco Unified Communications Manager behind a firewall.

Question 35

Which protocol and port are used for signaling between on-premises Cisco Webex Video Mesh Nodes and Cloud Media Services?

Options:

A.

standard SIP over TCP port 5060

B.

signaling over HTTPS TCP port 443

C.

standard SIPTLS over TCP port 5061

D.

signaling over TCP port 444

Question 36

Cisco Collaboration deployment has video endpoints that can do B2B calls over the internet, but they also can make audio calls through a gateway. This ability means that someone from the internet can make fraud calls through the system. Which action must an engineer take to set up the search rules for calls that are being headed to the PSTN gateway?

Options:

A.

Ensure that only requests that are authenticated are allowed to make a PSTN call.

B.

Avoid using any wild card in the source settings in the search rules.

C.

Add registered devices only in the search rule for the PSTN gateway.

D.

Add registered devices only in the zone for the PSTN gateway.

Question 37

An engineer noticed that internal participants using Full HD endpoints are joining meetings hosted in the Video Mesh node. The quality of the calls is 720p. What must the engineer configure to support 1080p quality?

Options:

A.

Set the “Enhanced Layout Experience” within the Video Mesh settings in Cisco Webex Control Hub to 1080P HD video.

B.

Set the “Received Video Resolution” on the Video Mesh node to maximum.

C.

Turn on the “Enable 1080P HD video for all participants hosted on on-premises Video Mesh nodes” setting in the Cisco Webex Control Hub.

D.

Turn on the “Highest Detail, Best Motion: 1080P” setting in the Cisco Webex Control Hub.

Question 38

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?

Options:

A.

Deploy Directory Connector.

B.

Open the TCP 443 port from IM and Presence to Webex Cloud.

C.

Deploy a Webex Device Connector.

D.

Deploy a Cisco Expressway Message Connector host.

Question 39

An engineer must review a new traversal zone that is not establishing a successful connection between Expressway-C and Expressway-E. When the event log page on the Expressway-E is reviewed, an authentication failure is found with the detail “user not found”. Which two actions must the engineer take to resolve the issue? (Choose two.)

Options:

A.

Disable TLS verification on the Expressway-E.

B.

Ensure that the authentication credentials configured on both zones to match.

C.

Ensure that LDAP is properly configured and synchronized on the Expressway-E.

D.

Ensure that the authentication credentials exist on the Expressway-E local database.

E.

Ensure that the authentication credentials exist on the Expressway-C local database.

Question 40

Which zone is required on a B2B deployment between Expressway-C and Expressway-E?

Options:

A.

traversal zone

B.

DNS zone

C.

default zone

D.

neighbor zone

Question 41

Which SIP media encryption mode is applied by default for newly created zones in the Cisco Expressway?

Options:

A.

Off

B.

Auto

C.

Force Encrypted

D.

Best Effort

Question 42

Which statement about the Cisco Webex hybrid service is true?

Options:

A.

Expressway Connector is required for an on-premises Exchange server.

B.

Hybrid Message service works only with Jabber cloud deployment.

C.

Directory Connector is required for Azure AD.

D.

Directory Connector must be deployed for OBTP to work with on-premises video devices.

Question 43

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.

Question 44

Refer to the exhibit.

Question # 44

If the Webex Teams device cannot connect to Video Mesh Cluster-1 because it is busy, which media node does the Webex Teams device connect to next?

Options:

A.

Both Cloud Node US-EAST and US-WEST

B.

Video Mesh Cluster-2

C.

Cloud Node US-EAST

D.

Cloud Node US-WEST

Question 45

Which two statements about Mobile and Remote Access certificate are true? (Choose two.)

Options:

A.

Expressway Core can use private CA signed certificate.

B.

You must upload the root certificates in the phone trust store.

C.

Expressway must generate certificate signing request.

D.

Expressway Edge must use public CA signed certificate.

E.

The Jabber client can work with public or private CA signed certificate.

Question 46

Where is encryption enabled in a Cisco collaboration environment for dedicated hardware-based video endpoint calls?

Options:

A.

Set enforce encryption in Cisco Expressway-C under Dial Plan Configuration.

B.

Set enforce encryption in regions in Cisco UCM.

C.

Set enforce encryption on every single endpoint.

D.

Ensure that Cisco UCM is set to restricted mode.

Question 47

How is the communication routed in a Hybrid deployment so that people on Cisco Cloud-Based IM are able to communicate with Cisco Jabber users in the on-premises environment?

Options:

A.

The Expressway-C enables a connection directly with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.

B.

The Expressway-E located in the DMZ establishes a connection with the Cisco Webex Cloud to enable the hybrid service and allow the two services to communicate.

C.

The Cisco Unified IM and Presence server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.

D.

The Cisco UC server establishes a connection using the outgoing path through the Cisco Expressways that terminates in the Cisco Webex Cloud to create the hybrid environment that links the two services together.

Question 48

When external video endpoints are called via a DNS zone, which dialing method requires DNS to be configured in the Expressway server?

Options:

A.

IP dialing

B.

URI dialing

C.

DN dialing

D.

E.164

Question 49

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

Options:

A.

SDP b-line

B.

SIP record route

C.

SDP c-line

D.

SDP m-line

Question 50

A company has a single Expressway-E that exhibits high resource utilization. An engineer checks the logs and finds numerous fraudulent attempts from sip:200@cisco.com. Where must the engineer go to configure a call policy rule and block the desired URI?

Options:

A.

Call History Configuration > Call Policy > Rules

B.

Configuration > Call History > Policy > Rules

C.

Configuration > Call Policy > Rules

D.

Configuration > Policy > Inbound > Rules

Question 51

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?

Options:

A.

search rules to only route calls with a destination URI of 5 to 8 digits long on the Expressway-E

B.

CPL that blocks calls with a destination domain other than example.com on the Expressway-C

C.

search rules to only route calls with a destination domain ofexample.com on the Expressway-E

D.

CPL to block calls with a destination URI with 8 or more digits on the Expressway-E

Question 52

An administrator is enabling Mobile and Remote Access login for the Cisco UCM registration domain cisco.com. Phones are registered with a Cisco UCM phone security profile name of securephone.cisco.com. Which two subject alternative names must be configured? (Choose two.)

Options:

A.

Securephone.cisco.com on the CallManager certificate

B.

cisco.com on the Expressway-C certificate

C.

Securephone.cisco.com on the Expressway-E certificate

D.

cisco.com on the Expressway-E certificate

E.

Securephone.cisco.com on the Expressway-C certificate

Question 53

For a Mobile and Remote Access deployment, which server's certificate must include the Unified registration domain as a Subject Alternate Name?

Options:

A.

Expressway-C server certificate

B.

Cisco Unified Communications Manager server certificate

C.

Expressway-E server certificate

D.

Expressway-C and Expressway-E server certificate

Question 54

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?

Options:

A.

Cisco Unified Border Element and Cisco ASA Firewall

B.

Cisco Unified Border Element and Cisco Firepower Firewall

C.

Cisco Expressway-C and Cisco Expressway-E

D.

Cisco Expressway-C and Cisco Unified Border Element

Question 55

Which DNS record and port combination must be resolved externally for Mobile and Remote Access to be used?

Options:

A.

_collab-edge on port 8443

B.

_cisco-uds-edge on port 5061

C.

_collab-edge on port 5061

D.

_cisco-uds on port 8443

Question 56

An external Jabber device cannot register. While troubleshooting this issue, the engineer discovers that privately signed certificates are being used on Expressway-C and Expressway-E What action will resolve this issue?

Options:

A.

The private CA certificate must be placed in the phone trust store.

B.

The Jabber client must register to the Cisco UCM internally before it will register externally.

C.

The device running the Jabber client must use a VPN to register.

D.

The device running the Jabber client must download and trust the private CA certificate.

Question 57

What are the steps to access the Service Setup Wizard during the first setup of the Expressway server to license the server?

Options:

A.

Factory reset the Expressway server to pass from Smart Licensing to PAK-based licensing.

B.

From the GUI of the Expressway server, go to Status> Overview> Run service setup.

C.

Factory reset the Expressway server to pass from Expressway-C to Expressway-E.

D.

From the GUI of the Expressway server, go to Maintenance> Option keys> First Setup Wizard.

Question 58

Which option mandates that calls fall back to unencrypted media if encryption cannot be established?

Options:

A.

auto

B.

force unencrypted

C.

best effort

D.

force encrypted

Question 59

How does an administrator configure an Expressway to make sure an external caller cannot reach a specific internal address?

Options:

A.

add the specific URI in the firewall section of the Expressway and block it

B.

block the call with a call policy rule in the Expressway-E

C.

add a search rule route all calls to the Cisco UCM

D.

configure FAC for the destination alias on the Expressway

Question 60

An engineer must enable the communication between two separate Expressway-C servers to allow inbound and outbound calling between different endpoints registered on each server. Which configuration must happen?

Options:

A.

Configure a traversal zone on each server with a destination of the other Expressway-C.

B.

Configure a neighbor zone on each server with a destination of the other Expressway-C.

C.

Configure a transform on each server to strip the port numbers at the end of the alias.

D.

Configure a transform on each server to convert the calling alias into the called alias.

Question 61

Question # 61

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.

Question 62

An engineer learns from an end user that calls from outside the company are not being received. Calls are being made to other businesses outside of the company on video using URL addresses. The change management log shows no changes in the configuration of the collaboration solutions. The engineer examines the endpoint, which seems to be registered to the Cisco UCM, and the SIP trunk between the Cisco UCM and sees that the Expressway is also up. In addition, the traversal link shows no errors between the Expressways. Which action must the engineer take to troubleshoot this issue?

Options:

A.

On the Cisco UCM, run the Real-Time Monitoring Tool to see if any incoming calls fail.

B.

On the Expressway-E, run diagnostic logging under maintenance to see if any requests reach the system.

C.

On the Expressway-E, check the NTP settings to ensure that TLS will be able to terminate. If the clock is out of sync, incoming calls from other working systems would work bur not outgoing calls from the company.

D.

On the Expressway-C, run a network log under administrative tools to see if any requests reach the system.

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