Question 1

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?

Accepted Answer

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 2

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

Accepted Answer

A) _cisco-uds._tcp. B) _cisco-mra._tls. C) _collab-edge._tls. D) _cisco-expwy._tls.

Question 3

Which service is available in a cloud-based deployment using Cisco Webex Messenger?

Accepted Answer

A)  Presence 
B)  Phone services 
C)  Voicemail 
D)  Call forward services

Question 4

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

Accepted Answer

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 5

Refer to the exhibit. Which inbound connection should an administrator configure on the outside firewall?

Accepted Answer

A)  Media: UDP 36000 to 36011 
B)  XMPP: TCP 5222 
C)  SIP: TCP 5061 
D)  HTTPS (tunneled over SSH between C and 
E) : TCP 2222

Question 6

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?

Accepted Answer

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.

Question 7

Cisco Collaboration endpoints are exchanging encrypted signaling messages. What is one major complication in implementing NAT ALG for voice and video devices?

Accepted Answer

A)  Internal endpoints cannot use addresses from the private address space. 
B)  The NAT ALG cannot inspect the contents of encrypted signaling messages. 
C)  NAT ALG introduces jitter in the voice path. 
D)  Source addresses cannot provide the destination addresses that remote endpoints should use for return packets.

Question 8

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

Accepted Answer

A)  1024 
B)  2048 
C)  4096 
D)  8192

Question 9

When determining why Mobile and Remote Access to Cisco TelePresence equipment does not work anymore for an organization. There are several administrators and configuration changes could have happened without anyone knowing. Internal communication seems to be working, but no external system can register or call anywhere. Gathering symptoms, you also discover that no internal systems can call out either. What is TraversalZone missing that causes this issue?

Accepted Answer

A)  link to the DefaultZone 
B)  pipe to the DefaultZone 
C)  SIP trunk to the DefaultZone 
D)  route pattern to the DefaultZone

Question 10

Refer to the exhibit. 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?

Accepted Answer

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 11

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

Accepted Answer

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

Question 12

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

Accepted Answer

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 13

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?

Accepted Answer

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.

Question 14

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?

Accepted Answer

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 15

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?

Accepted Answer

A)  Traversal Zone 
B)  Any 
C)  Neighbor Zone 
D)  All

Question 16

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?

Accepted Answer

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 17

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

Accepted Answer

A)  block the call with a call policy rule in the Expressway-E 
B)  add the specific URI in the firewall section of the Expressway and block it 
C)  configure FAC for the destination alias on the Expressway 
D)  add a search rule route all calls to the Cisco UCM

Question 18

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

Accepted Answer

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 19

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?

Accepted Answer

A)  Transparent Explicit Proxy 
B)  Transparent Inspecting Proxy 
C)  Reverse Proxy 
D)  Distorting Proxy

Question 20

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

Accepted Answer

A)  Unified Communications traversal zone 
B)  neighbor zone 
C)  DNS zone 
D)  traversal zone

Exam 31: Implementing Cisco Collaboration Conferencing