642-742 Exam Training Practice Tests (Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0)]

Question 1

A network engineer wants the DSCP marking to align with the 802.11e access category video. What will this marking be?

A. 4 B. 34 C. AF31 D. 5

Correct Answer: B

Question 2

An engineer notices that the batteries on a Cisco 792X series wireless phone are draining quite a bit even while not placing calls. What should be changed on the SSID to fix this?

A. enable Multicast Direct to cut down on the multicast processing B. set P2P to forward down-stream so that clients are not interfering with each other C. set DTIM to 2 on the operational band of the voice clients D. enable U-APSD on the WLAN to save power

Correct Answer: C

Question 3

Wireless phones at a customer's site often experience a fast busy signal when trying to initiate calls. What two actions address this issue? (Choose two.)

A. increase cell size B. increase CAC Max Bandwidth C. decrease cell size D. decrease CAC Max Bandwidth E. increase CAC Reserved Bandwidth

Correct Answer: B,C

Question 4

After implementing mesh with an IP surveillance camera connected to the LAN port on a RAP, the engineer notices that QoS is not being marked. In this setup, what device is responsible for marking upstream traffic from the camera?

A. MAP B. IP Camera C. Wireless Controller D. RAP E. First-Hop Router

Correct Answer: B

Question 5

You are getting complaints from Cisco Unified Wireless IP Phone 7925 users that their phones are failing to register with the Cisco Unified Communications Manager Express server and are showing the message "Registering." What is the problem?

A. The DHCP server needs to include the command option 66 ip <ip address> to serve the appropriate load file. B. The IP phones are failing to receive a DHCP address from the DHCP server. C. There is no ephone configuration for each phone in the Cisco Unified CME device. D. The IP phones are failing to receive their firmware files from the TFTP server.

Correct Answer: D

Question 6

Which two statements describe the capability of TSM to collect statistics that are related to VoWLAN on Cisco WLC v7.0? (Choose two.)

A. The feature is enabled by default. B. It is operational only on 802.11a/n radio. C. It requires Cisco Compatible Extensions clients for uplink statistics only. D. It requires Cisco Compatible Extensions clients for uplink and downlink statistics. E. It is operational on both 802.11g/b/n and 802.11a/g radio.

Correct Answer: C,E

Question 7

A network engineer is limiting the number of voice calls on an AP. Which technology should be used?

A. SCCP B. SIP C. RTP D. CAC

Correct Answer: D

Question 8

Refer to the exhibit.

A customer with a high-density deployment has called stating there have been voice quality issues with roaming clients. Given the configuration, what is the problem?

A. Band-Select has not been enabled and is allowing the voice client to switch bands when roaming. B. Load-Balancing is enabled and sending reason code 17 to roaming voice clients. C. Static IP tunneling should be enabled so that the voice clients can be tunneled properly. D. DTIM should be configured to 2 on both 2.4 and 5ghz to aid in delivery of wireless frames during roaming.

Correct Answer: B

Question 9

A Cisco 7925 phone at a client's location is not registering with CUCM. The engineer analyzes a packet capture, sees that the phone receives an IP, and downloads the proper configuration file from TFTP successfully. What type of messages should the phone be sending at this point?

A. SCCP B. H.245 C. MCGP D. H.323

Correct Answer: A

Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 - 642-742 Exam Practice Test