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Cisco 300-820 Dumps

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Total 207 questions

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

Question 1

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 2

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 3

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 4

A network engineer is configuring Mobile and Remote Access for the environment and must add the Certificate Authority into the Expressways. How does the engineer perform this action?

Options:

A.

Go to Maintenance > Trusted CA certificate > Security and upload the trusted Certificate Authority certificates.

B.

Go to Maintenance > Security > Trusted CA certificate and upload the trusted Certificate Authority certificates.

C.

Go to Maintenance > Tools > Security > Certificates > Trusted CA certificate and upload the trusted Certificate Authority certificates.

D.

Go to Maintenance > Tools > Security > Trusted CA certificate and upload the trusted Certificate Authority certificates.

Question 5

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?

Options:

A.

Webex Edge only

B.

endpoint only

C.

Cisco UCM and endpoint

D.

Cisco UCM only

Question 6

Which technique can be used to have media flow directly between two endpoints that have a NAT between them?

Options:

A.

The endpoints can use a Cisco router API to disable NAT temporarily.

B.

Cisco Mobile and Remote Access allows for media traffic directly between two internal endpoints.

C.

Cisco access protocol can make a direct path between endpoints on an internal network.

D.

STUN makes UDP connections through NAT devices.

Question 7

A company decided to gradually move to the Cisco Webex Cloud from a Cisco on-premises solution. One step is to configure a Cisco Hybrid Services connector. Where must an engineer make this configuration?

Options:

A.

Deploy the Cisco Hybrid Services connector, which is an on-premises node, to allow for multiple Cisco collaboration environments to connect to Cisco Webex.

B.

Configure Hybrid Service in the Cisco Expressway-E in the DMZ to connect to the Cisco Webex Cloud.

C.

Configure Hybrid Services in Cisco Webex Control Hub in the Cisco Webex Cloud to enable Hybrid Services.

D.

Enable the Hybrid Services service on the Cisco UCM to allow the on-premises call control to establish a hybrid link to the Cisco Webex Cloud.

Question 8

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

Options:

A.

1 hour

B.

2 hours

C.

4 hours

D.

6 hours

Question 9

Which zone is required between Expressway-E and Expressway-C in Mobile and Remote Access deployments?

Options:

A.

Unified Communications traversal zone

B.

neighbor zone

C.

DNS zone

D.

traversal zone

Question 10

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.

Question 11

Where can the administrator manage a Webex tenant?

Options:

A.

Cisco Webex administrator portal

B.

Cisco Webex management portal

C.

Cisco Webex control panel

D.

Cisco Webex Control Hub

Question 12

In which mode does the Cisco Expressway act as a SIP-H.323 gateway only if one or more of the endpoints are locally registered?

Options:

A.

registered only

B.

gateway only

C.

off

D.

Ion

Question 13

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

Options:

A.

Traversal Server

B.

Advanced Networking

C.

Device Provisioning

D.

Rich Media Sessions

E.

TURN Relays

Question 14

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 username@cisco.com. 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?

Options:

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.

An HTTP allow list entry must be made on the Expressway-C for phonebook cisco.com.

D.

A SIP allow list entry must be made on the Expressway-C for .*@cisco.com.

Question 15

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 16

Which step is required when configuring Cisco Webex Hybrid Message Service?

Options:

A.

Register Expressway-C Connector Hosts to the Cisco Webex Cloud.

B.

Register Expressway-C to Cisco Unified Communications Manager.

C.

Add Expressway-C and Cisco United CM to the Cisco Webex Cloud.

D.

Add Cisco Unity Connection to Expressway-E.

Question 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.

Question 18

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

Question 19

Which two scenarios need a proper DNS configuration on Expressway servers? (Choose two.)

Options:

A.

Expressway servers verify the common name attribute in server certificates.

B.

Expressway servers route calls based on SIP URI.

C.

Admins avoid IP address configuration for neighbor zone peers.

D.

Expressway servers use NTP peer authentication for secure time updates.

E.

Admins download software updates from the Cisco website via WebUI.

Question 20

Which step is taken when configuring a Cisco Expressway solution?

Options:

A.

Configure the Expressway-E by using a non-traversal server zone.

B.

Enable static NAT on the Expressway-E only.

C.

Disable H.323 mode on the Expressway-E.

D.

Enable H.323 H.460.19 demultiplexing mode on the Expressway-C.

Question 21

In Cisco Expressway, which information from an incoming search request does the pre-search transform configuration allow to be modified?

Options:

A.

calling party

B.

called address

C.

Source IP address

D.

CUD

Question 22

What happens to the encrypted signaling traffic of a collaboration device if you place it inside a firewall with private IP addresses and try to make a call over IP without any collaboration infrastructure?

Options:

A.

The signaling makes it back to the endpoint because the firewall is an application layer gateway and provides address translation.

B.

Encrypted IP traffic for collaboration devices always is trusted by the firewall.

C.

The signaling does not make it back to the endpoint because the firewall cannot inspect encrypted traffic.

D.

The signaling makes it back to the endpoint because the endpoint sent the private address to the external endpoint.

Question 23

Refer to the exhibit.

as

While troubleshooting Cisco Jabber login issues, there are some error messages. Why is the Jabber client unable to sign in?

Options:

A.

down Cisco Unified Communications Manager server

B.

XMPP bind failures

C.

incorrect login credentials

D.

service discovery issues

Question 24

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.

Question 25

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 26

In a Webex Video Mesh deployment, where do Cloud-registered Webex Teams clients and devices send signaling traffic for call setup?

Options:

A.

to a local Video Mesh node

B.

directly to the Webex cloud

C.

to an Expressway-E server

D.

to a remote Video Mesh node

Question 27

An administrator has been tasked to bulk entitle 200 existing users and ensure all future users are

automatically configured for the Webex Hybrid Calendar Service. Which two options should be used to configure these users? (Choose two.)

Options:

A.

Export a CSV list of users in the Cisco Webex Control Hub, set the Hybrid Calendar Service to TRUE for users to be enabled, then import the file back to Manage Users menu in the Cisco Webex Control Hub.

B.

Set up an Auto-Assign template that enables Hybrid Calendar.

C.

Select the Hybrid Services settings card in the Cisco Webex Control Hub and import a User Status report that contains only users to be enabled.

D.

On the Users tab in the Cisco Webex Control Hub, check the box next to each user who should be enabled, then click the toggle for the Hybrid Calendar service to turn it on.

E.

From Cisco Webex Control Hub, verify the domain that your Hybrid Calendar users will use, which

automatically activates them for the service.

Question 28

Which option changes the addresses and ports in voice and video signaling messages?

Options:

A.

Firewall ALG

B.

NAT overload

C.

NAT Pinhole

D.

NAT ALG

Question 29

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 30

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 31

A call is sent by Cisco UCM to Expressway with a URI of 75080001@expc1a.pod8.test.lab. If (7508…)

@expc1a\.pod8\.test\.lab.* is the pattern string, what would be the replacement string of the transform in Expressway to re-write the call so that it becomes 75080001@conf.pod8.test.lab?

Options:

A.

\1@conf\.pod8.test.lab.@

B.

\1@conf\.pod8\.test\lab.*

C.

\1@conf.pod8\.test\.lab

D.

\1@conf\.pod8\.test.lab.!

Question 32

An administrator installs a new webserver (server1.example.com – 10.1.1.90) for storing Cisco Jabber update files to the network, but all Mobile and Remote Access registered clients still run the old Jabber software version, and the update fails. Which configuration task on an Expressway server solves the Jabber software update issue?

Options:

A.

Add a rule with the URL http://server1.example.com:80/ to the outbound HTTP allow list manually to allow pushing the new software to the clients.

B.

Add a rule with the URL http://server1.example.com:80/ to the inbound HTTP allow list manually to allow access to the new web server.

C.

Add a rule with the server IP address 10.1.1.90 in the URL to the inbound HTTP allow list because server names and FQDNs are not supported.

D.

Run an IM and Presence server discovery process on Expressway-C to add the new web server to the inbound HTTP allow list automatically.

Question 33

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 34

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?

Options:

A.

traversal zone with the peer address 192.168.10.63

B.

neighbor zone with the peer address 192.168.10.63

C.

traversal zone with the peer address of 203.0.113.5

D.

neighbor zone with the peer address of 203.0.113.5

Question 35

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 36

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 37

A company is implementing Cisco Webex but has existing legacy Cisco video endpoint registered on-premises. The administrator of Webex wants the SIP address of these rooms to appear in the directory listing on Webex registered endpoints and in the Webex App. How can this be configured?

Options:

A.

Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.

B.

Using the Directory Connector, room resources with flex licenses only can be synchronized with Webex to make the room appear in the phonebook of the Webex App or the endpoint. SIP address is then entered from Control Hub because it will not match the field.

C.

Using the Directory Connector, room resources with flex licenses only can be synchronized with Webex to make the SIP address appear in the phonebook of the Webex App or the endpoint.

D.

Using the Directory Connector, room resources without Webex licenses can be synchronized with Webex to make the room appear in the phonebook of the Webex App or the endpoint. SIP address is then entered from Control Hub because it will not match the field.

Question 38

as

Refer to the exhibit. A collaboration engineer creates a transform to modify 4123@exp-name.exp.domain: to 4123@exp.domain. Which pattern behavior setting accomplishes this task?

Options:

A.

replace

B.

strip

C.

add prefix

D.

add suffix

Question 39

Which role does Call Policy play when preventing toll fraud on Expressways?

Options:

A.

It controls which calls are allowed, which calls are rejected, and which calls are redirected to a different destination.

B.

It changes the calling and called number on a call.

C.

It changes the audio protocol used by a call through Expressways.

D.

It changes the audio codec used in a call through Expressways.

Question 40

as

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?

Options:

A.

Change the SIP profile on the SIP trunk for the Expressway-E to Standard SIP Profile for TelePresence Endpoint

B.

Change the “Incoming Port” in the SIP Trunk Security Profile for the Expressway-C to not match SIP line registrations

C.

Enable autoregistration for the appropriate DN range on the Cisco UCM servers running the CallManager service

D.

Write a custom normalization script since the “vcs-interop” normalization script does not allow registrations

Question 41

What should an engineer use to create users for a Cisco Jabber Cloud Deployment?

Options:

A.

Cisco Webex Administration Tool

B.

Cisco UCM

C.

Cisco Webex Directory Connector

D.

Cisco Unified IM and Presence Server

Question 42

Which configuration is required when implementing Mobile and Remote Access on Cisco Expressway?

Options:

A.

IPS

B.

SAML authentication

C.

Cisco Unified CM publisher address

D.

SSO

Question 43

An engineer must configure Mobile and Remote Access. One of the requirements is to expect Cisco Jabber users to enter username@cisco.com as the login userid. Which DNS record must the engineer modify to start implementing this requirement?

Options:

A.

_cuplogin._tcp.cisco.com

B _collab-edge._tls.cisco.com

B.

_cisco-uds._tls.cisco.com

C.

_cisco-uds._tcp.cisco.com

Question 44

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 45

as

Refer to the exhibit. A collaboration engineer creates an allow list test file for a Mobile and Remote Access deployment. Which lines are needed to format the test in the file correctly?

Options:

A.

https://myServer:8443/myPath.block, “my deployment”, “a block test”, GET

B.

“my deployment”, block, GET https://myServer:8443/myPath, “a block test”

C.

a block test:https:8443:GET “myServer/myPath”:my deployment:block

D.

a block test,https:8443,GET “myServer/myPath”,my deployment:block

Question 46

as

Refer to the exhibit. The administrator attempted to log in, but Jabber clients cannot log in via mobile and remote access. How is this issue resolved?

Options:

A.

Skype for Business mode must be disabled on the DNS server because it conflicts with Jabber login

requirements.

B.

The domain pod1.local must be deprovisioned from the Webex cloud for Jabber logins.

C.

A DNS SRV record must be created for _collab-edge._tls.pod1.local that points to the Expressway-E.

D.

The username jabberuser@pod1.local is invalid. The user should instead sign-in simply as jabberuser.

Question 47

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 48

Why would a Cisco Jabber contact under Hybrid Messaging Integration be grayed out?

Options:

A.

The contact uses Cisco Webex Teams and Jabber and remains as Do not Disturb for 30 minutes.

B.

The contact was using only Cisco Webex Teams and changed the status to Away.

C.

The contact set Out of the Office for Cisco Webex Teams.

D.

The other user has not used Cisco Webex Teams or Jabber within the last 72 hours, so they are offline.

Question 49

as

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 50

Which user management method uses the Webex Directory Connector to add and synchronize users to the Control Hub organization?

Options:

A.

Synchronize from Active Directory.

B.

Synchronize from Azure AD.

C.

Synchronize from "Add using People API'.

D.

Synchronize from Okta.

Question 51

Refer to the exhibit.

as

Which inbound connection should an administrator configure on the outside firewall?

Options:

A.

Media: UDP 36000 to 36011

B.

HTTPS (tunneled over SSH between C and E): TCP 2222

C.

SIP TCP 5061

D.

XMPP TCP 5222

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

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 54

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.

Question 55

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 56

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

Question 57

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 58

A company identifies a fraudulent toil situation. An engineer reviews the Cisco UCM call detail records and discovers that fraudulent calls originate from a Cisco Expressway-C server and are then routed to a 10-digit PSTN number. What must be configured to limit incoming Expressway calls to the internal Cisco UCM range of extensions 5XXXX?

Options:

A.

calling search space that contains all the partitions on the Unified Communications Manager SIP trunk to Expressway

B.

call policy rule from the DNS zone to allow a destination regex pattern of \d.*@abc.com

C.

unique search rule with a regex pattern of [5]\d{4}@abc.com that targets the neighbor zone

D.

call policy rule from the DNS zone to allow a destination regex pattern of .*@abc.com

Question 59

An engineer configures a Cisco Collaboration environment to use Mobile and Remote Access for external access for company users. The engineer uses OAuth with refresh on the Cisco UCM SIP lines for extra security and improved user experience. During the setup, Mobile and Remote Access does not work, it is enabled on the Cisco UCM and Cisco Expressways. SIP trunks on ports 5090 and 5091 are configured to avoid conflicts with other SIP trunks between internal Cisco UCM clusters. The traversal zone also uses port 6500. The traversal zone between Expressways shows no errors, and the requests hit Expressway-E from the Internet. What is the reason that the solution does not work?

Options:

A.

Mobile and Remote Access does not support OAuth with refresh with this configuration.

B.

The default port for Mobile and Remote Access is 6001. Therefore, the traversal port must be port 6001 for Mobile and Remote Access to work.

C.

The default port for Mobile and Remote Access is 6500, which creates a conflict with the existing traversal zone port.

D.

The default port for Mobile and Remote Access is 5091, which creates a conflict with the existing SIP trunks.

Question 60

Which attribute in the SDP for a call is affected by the static NAT address configuration in an Expressway-E?

Options:

A.

connection

B.

name

C.

version

D.

bandwidth

Question 61

Refer to the exhibit.

as

Mobile and remote access is being added to an existing B2B deployment and is failing.

When the administrator looks at the alarms on the Expressway-C, the snippets are shown. Which configuration action should the administrator take to fix this issue?

Options:

A.

The listening port on the Expressway-C for SIP TCP must be changed to a value other than 5060

B.

The listening port on the Expressway-C for SIP TLS must be changed to a value other than 5061

C.

The listening port on the Cisco UCM for the Expressway-C SIP trunk must be changed to something other than 5060 or 5061

D.

The listening port on the Cisco UCM for the Expressway-C SIP trunk is set to something other than 5060 or 5061. It must be set to 5060 for insecure and 5061 for secure SIP

Question 62

Refer to the exhibit.

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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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