300-080 Exam - Troubleshooting Cisco IP Telephony and Video

NEW QUESTION 1

In Cisco Unified Communications Manager, what is the default maximum number of learned patterns for the call control discovery feature parameter?

• A. 5000
• B. 10000
• C. 20000
• D. 500
• E. 50000

Answer: C

NEW QUESTION 2

Which three network conditions anDEquipment should you avoid to ensure a high-quality Cisco TelePresence experience? (Choose three.)

• A. network hubs
• B. Layer 3 switches
• C. duplex mismatch connections
• D. 10/100 access ports
• E. high utilization link with QoS
• F. network loops
• G. redundant network trunks

Answer: ACF

NEW QUESTION 3

Which debug command analyzes messages that are produced by SIP during the call setup process in IOS?

• A. Show isdn status
• B. debug voip ccapi inout
• C. show sip-ua register status
• D. debug isdn q931
• E. debug ccsip messages
• F. debug voice dialpeer

Answer: E

NEW QUESTION 4

You are troubleshooting an ILS connectivity issue. All clusters are set to “Use TLS Certificates”. Which certificates must be exchanged between Cisco Unified Communications Manager clusters?

• A. Tomcat certificates between all nodes in all clusters.
• B. TLS certificates between publisher nodes in all clusters.
• C. Call Manager certificates between publisher nodes in all clusters.
• D. Tomcat certificates between publisher nodes in all clusters.

Answer: D

Explanation:

Reference: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/10_0_1/ccmfeat/ CUCM_BK_F3AC1C0F_00_cucm-features

NEW QUESTION 5

Which two tasks are performed by the RAS signaling function of H.225.0? (Select two.)

• A. Performs bandwidth changes.
• B. Transports audio messages between endpoints.
• C. Performs disengage procedures between endpoints and a gatekeeper.
• D. Allows endpoints to create connections between call agents.

Answer: AC

NEW QUESTION 6


Refer to the exhibit. Company ABC reports that they are getting one-way audio and video when they make a Call. Which cause of the issue is true?

• A. The public IP address is invalid
• B. The NAT mode must be changed to Static
• C. NAT is not configured correctly on the network
• D. The endpoint is not registered

Answer: C

NEW QUESTION 7

Refer to the exhibit.

Which course of action will resolve the Mobile Connect issues that are shown in the exhibit?

• A. Configure the Mobility softkey on the phone.
• B. Enable the user for Cisco Mobile Connect.
• C. Make the user an owner of the phone device in the phone device configuration page.
• D. Enable the device mobility mode on the phone since it is disabled.

Answer: C

NEW QUESTION 8

In Cisco Unified Communications Manager (CUCM), you have three Service Advertisement Framework (SAF) forwarders configured, what happens when the primary and the backup SAF forwarders fail?

• A. You will need to designate another primary SAF forwarder.
• B. CUCM continues to work without connecting to the third SAF forwarder.
• C. The third SAF forwarder automatically becomes the primary SAF forwarder.
• D. CUCM tries to reconfigure the existing primary and backup SAF forwarders.
• E. TCP timer continues to initiate connection with the primary and backup SAF forwarders.
• F. Primary and backup SAF forwarders are re-initated automatically.

Answer: B

NEW QUESTION 9


Refer to the exhibit. An engineer is troubleshooting an issue with a newly configured transcoder. After the
engineer configures the IOS device and Cisco Unified Communications Manager (CUCM), the device will not register. What must the engineer reconfigure to fix this issue?

• A. the device type on CUCM
• B. the device pool on the transcoder
• C. the router to match the profile name
• D. the router to remove any unnecessary codecs

Answer: A

NEW QUESTION 10

You have 50 hardware MTP resources and 200 software MTP resources. You want to use hardware resources first, but software is being useDFirst. Where can you confirm the MTP selection order?

• A. Media Resource Group List
• B. Cisco Unified Real-Time Monitoring Tool
• C. MTP list
• D. phone device pool
• E. calling search space
• F. MGCP gateway

Answer: A

NEW QUESTION 11

You configured a Cisco ISR G2 as a SIP gateway, but the gateway does not show that it is registered with Cisco Unified Communications Manager. What is causing this issue?

• A. Cisco Unified Communications Manager does not support SIP gateways.
• B. The gateway does not have the UC license installed.
• C. The gateway does not have Cisco Unified Border Element session licensing.
• D. Cisco Unified Communications Manager does not show a SIP gateway as registered if it is not properly configured.
• E. Cisco Unified Communications Manager never shows a SIP gateway as registereDEven when it is properly configured.
• F. The Cisco ISR G2 cannot be a SIP gateway.

Answer: E

NEW QUESTION 12

After you deploy SAF in a megACluster and you verify that TCP port 5050 is open, you notice that SAF connections are failing. Which two functions must you check to troubleshoot the problem? (Choose two.)

• A. Cisco AXL Web service
• B. Cisco UP XCP Router service
• C. Connection conversation Messenger
• D. SMTP server
• E. CCD advertising service
• F. CCD requesting service

Answer: AB

NEW QUESTION 13

You have an endpoint registration problem with VCS, and the event log reason of “unknown domain”. The domain names that your endpoints are using to register with must be added to this list. Where do you check the list of defined domains?

• A. VCS configuration > Domains > SIP
• B. VCS configuration > Protocols > SCCP > Domains
• C. VCS Domains > Protocols > SIP
• D. VCS configuration > Protocols > SIP > Domains

Answer: D

Explanation:
Reference: https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/articles/ vcs_endpoint_registration_problems_kb_460.html

NEW QUESTION 14

Which command do you use to confirm that a router interlace is enableDFor SAP?

• A. show eigrp service-family ipv4 client details.
• B. show ip interface details
• C. show ip saf-service-family interface
• D. show run
• E. show eigrp service -family interface
• F. show eigrp service-family lpv4 <AS number interfaces

Answer: E

NEW QUESTION 15

Refer to the exhibit.

An engineer is troubleshooting a SAF forwarder adjacency in which two interfaces from the same router are being advertised to all other neighbors. Which set of IOS commands successfully stops the router from advertising the Loopback0 interface?

• A. route eigrp SAFservice-family ipv4 autonomous-system 100 sf-interface Loopback0no dampening-change
• B. router eigrp SAFservice-family ipv4 autonomous-system 100 sf-interface Loopback0exit-sf-interface
• C. router eigrp SAFservice-family ipv4 autonomous-system 100 sf-interface Loopback0no split-horizon
• D. router eigrp SAFservice-family ipv4 autonomous-system 100 sf-interface Loopback0shutdown

Answer: D

NEW QUESTION 16

Refer to the exhibit.

When a Cisco Unified Communications Manager Express advertises the directory number pattern in the
exhibit, what would the learned pattern be in the RTMT tool on the Cisco Unified Communications Manager?

• A. 4XXX and the ToDID will be 0:+1972555
• B. 4XXX and the ToDID will be 0:+19725554XXX
• C. 4XXX and the ToDID will be 0:19725554XXX
• D. 4XXX and the ToDID will be 0:1972555
• E. 19725554XXX and the ToDID will be 0:+1972555

Answer: D

Explanation:
The answer is 4XXX and the ToDID will be 0:1972555.
Exhibit explain profile dn-block1 alias-prefix 1972555 and pattern 1 type extension 4xxx.

NEW QUESTION 17

An engineer is configuring an IOS MTP on a Cisco 2911 Integrated Services Router and Cisco Unified Communications Manager (CUCM).
dspfarm profile 20 mtp codec g711ulaw
maximum sessions software 10 associate application SCCP shutdown
The MTP will not register with CUCM. Based on the configuration, what is the cause of the problem?

• A. The MTP type is not compatible with CUCM.
• B. The dspfarm profile is in a down state.
• C. The MTP type is incorrect.
• D. The MTP is not enabled on CUCM.

Answer: B

NEW QUESTION 18

A Call transfer from a video phone on Cisco Unified CM to VCS fails. Which is true?

• A. The DTMF signaling method was set to RFC 2833
• B. The UCM security mode was misconfigured
• C. The DTMF signaling method was set to no preference
• D. The SIP trunk between UCM and VCS was reset

Answer: A

NEW QUESTION 19

You are configuring Troubleshooting Perfmon Data-Logging parameters.
You want to specify the Cisco recommendeDFile size that can be stored in a perfmon log file. What is the maximum file size value that you must specify?

• A. 5 MB
• B. 50 MB
• C. 100 MB
• D. 150 MB
• E. 500 MB
• F. 600 MB

Answer: C

NEW QUESTION 20

Which two statements indicate something that can cause an IP phone to fail roaming when device mobility has been configured? (Choose two.)

• A. Device Mobility Mode is set to Off in the Cisco Unified Communications Manager service parameters while the device mobility configuration on the phone is set to default.
• B. No device mobility groups have been configured.
• C. No locations have been configured and assigned to the device pools.
• D. No physical locations have been configured and assigned to the device pools.
• E. No device mobility-related information settings were configured under the device pools.

Answer: AD

NEW QUESTION 21

When a remote endpoint dials in to join a Conference that is configured on a Cisco TelePresence Server bridge, the endpoint receives only audio. Other users can successfully join the call with Voice and Video. What is causing this issue?

• A. The endpoint does not have the multisite option installed.
• B. The endpoint does not have the partition of the bridge in its CSS.
• C. The bridge is out of all licenses.
• D. The endpoint is assigned a region without enough configured bandwidth for video.
• E. The bridge is not able to host video calls.

Answer: D

NEW QUESTION 22

Refer to the exhibit.

These settings are configured on a Cisco TelePresence System EX90. What is the result?

• A. The endpoint successfully registers to Cisco Unified Communications Manager as a SIP endpoint.
• B. The endpoint does not register to Cisco VCS as a SIP endpoint, because the domain information is missing.
• C. The endpoint does not register to Cisco Unified Communications Manager as a SIP endpoint, because the domain information is missing.
• D. The endpoint successfully registers to Cisco VCS as a SIP endpoint.
• E. The endpoint successfully registers to Cisco Unified Communications Manager as an H.323 endpoint.
• F. The endpoint successfully registers to Cisco VCS as an H.323 endpoint.

Answer: F

NEW QUESTION 23

When a user tries to initiate an Ad Hoc conference call from an IP phone, this message appears: No Conference Bridge Available. Which two actions resolve this issue? (Choose two.)

• A. Make sure that the Join softkey is assigned to the phone.
• B. Make sure that a Conference Bridge resource is registered to Cisco Unified Communications Manager.
• C. Reset the phone, to re-register resources.
• D. Make sure that a Conference Bridge Resource is assigned to the MRGL on the phone that initiates the conference call.

Answer: BD

NEW QUESTION 24

Cisco Unified Communications Manager failed to register with the Cisco SAF Forwarder. Assuming that the Cisco IOS SAF Forwarder is configured correctly, which minimum configuration would be needed on Cisco Unified Communications Manager to test registration?

• A. SAF trunk, SAF security profile, Cisco SAF Forwarder, and CCD advertising service
• B. SAF trunk, SAF security profile, Cisco SAF Forwarder, and CCD requesting service
• C. SAF trunk, SAF security profile, Cisco SAF Forwarder, CCD requesting service, and CCD advertising service
• D. SAF trunk, SAF security profile, and Cisco SAF Forwarder
• E. SAF trunk, CCD requesting service, and CCD advertising service

Answer: B

NEW QUESTION 25

Refer to the exhibit.

Users are reporting that inbound calls from the PSTN are dropping when not answered within 10 seconds. Calls come in via ISDN T1 PRI. Which configuration change is needed to prevent the calls from dropping?

• A. Remove the timeouts wait-release 10 commanDFrom under the voice-port.
• B. Remove the timeouts initial 10 commanDFrom under the voice-port.
• C. Remove the timer receive-rtcp 2 commanDFrom under the gateway.
• D. Remove the timer receive-rtp 10000 commanDFrom under the gateway.
• E. Modify the Call Forward No Answer setting in CUCM to redirect calls to Voicemail or another extension.

Answer: C

NEW QUESTION 26

You try to register a new H.323 endpoint to a Cisco VCS server, but the endpoint does not register correctly. You successfully check network connectivity and VCS registration with other devices. Which issue and solution will resolve this registration problem?

• A. Cisco VCS Server H.323 service must be restarted to activate the new endpoint.
• B. The Registration Policy is set to "Deny List" so all new endpoints are rejecte
• C. Set the Policy to "Allow List" so that the endpoint can register themselves and then reassign the "Deny List" Setting for security reasons.
• D. The new endpoint has not been assigned with the correct registration domain, so configure the correct domain on the endpoint.
• E. The Registration Policy is set to "Allow List" and the newly addeDEndpoint has to be added to the list, because only listed devices are allowed to register.

Answer: D

NEW QUESTION 27

Cisco TelePresence system ex90#1 is trying to call EX90 #2. Both endpoints are registered to Cisco Unified Communications Manager. The call connects, but the quality is not good. The video image is breaking up on EX90 #2. The media path from A to B supports only 2 Mb. Which three reasons are possible causes? (choose three.)

• A. The camera on system B has a loose cable.
• B. The line is congested, and QoS is not configured correctly between the sites.
• C. Bandwidth Imitation between IP zones is set too low for video.
• D. Bandwidth Imitation between regions is set too low for video.
• E. The autonegotiation protocol H 296 is tuned off on one of the EX90s.
• F. The system is set to use a higher bandwidth than the media path allows.

Answer: BDE

NEW QUESTION 28
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