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Question 26
Cisco Expressways are being deployed for Mobile and Remote Access. The Expressway-E internal interface (LAN1) IP is 192.168.100.10/24, and the external interface (LAN2) IP is 172.16.100.10/24.
The Expressway-C IP is 192.168.20.10/24. The default gateway for each subnet is the first useable address. How must the Expressway-E be configured to allow proper routing to the internal and external networks?
- A: IPv4 gateway: 172.16.100.1, and a static route for the 192.168.100.0/24 subnet using LAN1
- B: IPv4 gateway: 192.168.100.1, and a static route for the 192.168.20.0/24 subnet using LAN1
- C: IPv4 gateway: 192.168.100.1, and a static route for the 172.16.100.0/24 subnet using LAN2
- D: IP v4 gateway: 172.16.100.1, and a static route for the 192.168.20.0/24 subnet using LAN1
Question 27
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?
- 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 28
What is the first step to restoring an Expressway cluster from a backup?
- 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
- D: add all the Expressway peers to the cluster
Question 29
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?
- A: _cuplogin._tcp.cisco.com
- B: _collab-edge._tls.cisco.com
- C: _cisco-uds._tls.cisco.com
- D: _cisco-uds._tcp.cisco.com
Question 30
Refer to the exhibit. When Expressway-E routes a call with URI 4040@uclab.local to a DNS zone, which DNS server does the Expressway query for the SIP SRV records?
- A: 10.20.20.20
- B: 10.10.10.10
- C: 10.40.40.40
- D: 10.30.30.30
Question 31
An administrator is configuring a new Cisco Webex Hybrid Message Service deployment, and the Expressway-C Message Connector is successfully registered in the Control Hub. After the server information of the IM and Presence server is added to the Expressway-C, an error “Connectivity to IM and Presence AXL Service could not be established” is displayed in the Control Hub. The Cisco AXL Web Service is enabled on the IM and Presence Service publisher, and the main administrator account enabled for AXL API permission is being used. Which configuration change must be made to resolve this error?
- A: Enable the Cisco AXL Web Service on the Control Hub
- B: Enable the Cisco AXL Web Service on the Expressway-C Message Connector
- C: Enable an End User account for AXL.API permissions on the IM and Presence Service publisher
- D: Enable a second administrator account for AXL API permissions on the IM and Presence Service publisher
Question 32
An employee has recently left an organization and a manager suspects that this employee may have made changes to the system that no one is aware of. Mobile and Remote Access registration is not working. Internal communications appear to be working, but no external system is able to register or call anywhere. While investigating this problem, it is discovered that no internal systems are able to call externally either. What is the TraversalZone missing that is causing this issue?
- A: SIP trunk to the DefaultZone
- B: route pattern to the DefaultZone
- C: link to the DefaultZone
- D: pipe to the DefaultZone
Question 33
DRAG DROP
Drag and drop the required SAN field items from the left onto the features within the server categories on the right.
Question 34
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?
- 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 35
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?
- 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 36
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?
- 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 37
DRAG DROP
Drag and drop the services from the left onto their descriptions on the right. Some services are used more than once.
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