Ensurepass

Troubleshooting Cisco IP Telephony and Video (CTCOLLAB)

 

QUESTION 41

Refer to the exhibit. When a call between two HQ users was being conferenced with a remote user at the BR site, the conference failed. Which configuration would be needed to solve the problem?

 

clip_image002

 

A.

The BR_MRG must contain the transcoder device. The BR_MRGL must be assigned to the BR phones.

B.

The HQ_MRG must contain the transcoder device. The HQ_MRGL must be assigned to the HQ phones.

C.

A transcoder should be configured at the remote site and assigned to all remote phones through the BR_MRGL.

D.

The HQ_MRG must contain the transcoder device. The HQ_MRGL must be assigned to the software conference bridge.

E.

Enable the software conference bridge to support G.711 and G.729 codecs in Cisco Unified Communications Manager service parameters.

 

Correct Answer: D

 

 

QUESTION 42

You have 50 hardware MTP resources and 200 software MTP resources. You want to use hardware resources first, but software is being used first. 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

 

Correct Answer: A

 

 

QUESTION 43

In an MCU call with three Cisco TelePresence MX800 systems and a mobile phone calling in, the three TelePresence MX800 systems suddenly experience low audio levels, but the mobile phone audio levels are correct. What can you do to correct this issue?

 

A.

Turn off the audio processors on the TelePresence MX800.

B.

Use the mobile phone audio option on the TelePresence MX800 to adjust the mobile phone levels.

C.

Mobile phone audio levels can vary, so you cannot correct the issue.

D.

Turn on AGC on the MCU to adjust the audio levels.

E.

Turn on ALG on the MCU to adjust the audio levels.

F.

Turn on the Auto Adjust levels under “Settings > Audio” on the MCU.

 

Correct Answer: D

 

 

QUESTION 44

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.

 

Correct Answer: BD

 

 

QUESTION 45

Two phones in the same cluster and at the same site have a call currently connected. The site local H.323 PSTN gateway loses connection with Cisco Unified Communications Manager. Which two results do you expect? (Choose two.)

 

A.

SRST is active, and all the phones enter SRST mode.

B.

No incoming and outgoing calls are possible.

C.

Cisco Unified SRST is able to receive incoming calls.

D.

The current call is not disconnected.

E.

The phones display “CM Fallback Service Operating.”

 

Correct Answer: BD

 

 

 

 

QUESTION 46

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?

 

clip_image004

 

A.

Remove the timeouts wait-release 10 command from under the voice-port.

B.

Remove the timeouts initial 10 command from under the voice-port.

C.

Remove the timer receive-rtcp 2 command from under the gateway.

D.

Remove the timer receive-rtp 10000 command from under the gateway.

E.

Modify the Call Forward No Answer setting in CUCM to redirect calls to Voicemail or another extension.

 

Correct Answer: C

 

 

QUESTION 47

When users in headquarters call branch office users over the WAN link, branch users report poor audio quality. Headquarters users consistently experience acceptable audio quality. Which troubleshooting approach most directly improves the audio quality of the branch users?

 

A.

Make the branch router configuration for LLQ match the headquarters router.

B.

Make the headquarters router configuration for LLQ match the branch router.

C.

Make the branch router configuration for CBWFQ match the headquarters router.

D.

Make the headquarters router configuration for CBWFQ match the branch router.

Correct Answer: B

 

 

QUESTION 48

Which three network conditions and equipment 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

 

Correct Answer: ACF

 

 

QUESTION 49

When identifying Cisco TelePresence Endpoint traffic characteristics, which three statements are true? (Choose three.)

 

A.

Latency, jitter, and loss are measured in a round-trip fashion.

B.

Latency, jitter, and loss are measured unidirectionally.

C.

Latency and loss are measured at a pac
ket level, based on RTP header sequence numbers and time stamps.

D.

Latency and jitter are measured at a packet level, based on RTP header sequence numbers and time stamps.

E.

Jitter is measured at a video frame level, by measuring the arrival time of the video frame versus the expected arrival time.

F.

Jitter is measured at a packet level, by measuring the arrival time of the packet versus the expected arrival time.

 

Correct Answer: BCE

 

 

QUESTION 50

You are troubleshooting video quality issues on a Cisco TelePresence TX9000 Series system. Which CLI command shows the total number of lost video packets and the received jitter during a call in progress?

 

A.

show call statistics video

B.

showcall statistics all

C.

showcall statistics detail

D.

showcall statistics video detail

 

Correct Answer: D

 

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