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QUESTION 1
Which complication does a NAT introduce in SDP for a SIP call?
A. Additional headers due to NAT encapsulation can cause the packet size to exceed the MTU.
B. When the client is behind a NAT they may be unable to determine the appropriate offset due to time zones.
C. The IP address specified in the connection data field may be a unrouteable internal address.
D. The encryption keys advertised in the SDP are only valid for clients not behind a NAT.
Correct Answer: D
QUESTION 2
A company is installing Cisco Collaboration infrastructure and one of the requirements is that they must be able to
communicate with many external parties that are using H.323 and SIP. Internally they want to register the endpoints
only on SIP.
Which functionality would describe the feature that needs to be enabled and where to achieve this?
A. Interworking in Expressway-C
B. Transcoding in Cisco Unified Communications Manager
C. Transcoding in Expressway-C
D. Interworking in Cisco Unified Communications Manager
Correct Answer: B
QUESTION 3
Refer to the exhibit. 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?
A. Ensure that the peer address does not match the Common Name on the 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.
Correct Answer: C
QUESTION 4
Which two statements about Mobile and Remote Access certificates are true? (Choose two.)
A. Expressway Core can use a private CA-signed certificate.
B. You must upload the root certificates in the phone trust store.
C. Expressway must generate certificate signing requests.
D. Expressway Edge must use a public CA-signed certificate.
E. The Jabber client can work with a public or private CA-signed certificate.
Correct Answer: CD
QUESTION 5
Which connection does the traversal zone configuration define?
A. Expressway-E and Collaboration Endpoints
B. Cisco UCS E-Series and Cisco UCM
C. Cisco UC and Cisco Unified Presence Server
D. Cisco Expressway-C and Cisco Expressway-E platforms
Correct Answer: D
QUESTION 6
When designing the call control on a Cisco Expressway Core, which is the sequence of dial plan functions?
A. transforms, CPL, user policy, search rules
B. search rules, zones, local zones
C. DNS zone, local zone, search rules
D. search rules, transform
Correct Answer: D
QUESTION 7
Which two licenses are required for the B2B feature to work? (Choose two.)
A. Traversal Server
B. TURN Relays
C. Rich Media Sessions
D. Advanced Networking
E. Device Provisioning
Correct Answer: CE
QUESTION 8
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 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.
Correct Answer: D
QUESTION 9
Refer to the exhibit. 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?
A. Both Cloud Node US-EAST and US-WEST
B. Video Mesh Cluster-2
C. Cloud Node US-EAST
D. Cloud Node US-WEST
Correct Answer: B
QUESTION 10
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?
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.
Correct Answer: A
QUESTION 11
For a Mobile and Remote Access deployment, which server\\’s certificate must include the Unified registration domain
as a Subject Alternate Name?
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
Correct Answer: C
QUESTION 12
A Cisco Webex Hybrid Video Mesh Node can be installed in the DMZ and on the internal network.
Which statement is true?
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.
Correct Answer: C
QUESTION 13
Which two statements about Cisco Webex Video Mesh Nodes are true? (Choose two.)
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 VPNs, Cisco Unified CM decides which VMN is
used for signaling connection.
E. A VMN can terminate a media connection while operating in maintenance mode.
Correct Answer: BD
QUESTION 14
Between which two DTMF relay methods does the Expressway support interworking? (Choose two.)
A. unsolicited notify
B. RFC 2833
C. KPML
D. passthrough
E. H.245 user input indication
Correct Answer: BE
QUESTION 15
Which step is required when configuring Cisco Webex Hybrid Message Service?
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.
Correct Answer: A
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