Exam Name: Rich Media Communications
Exam Type: Cisco
Exam Code: 642-481 Total Questions: 55
Page 15 of 17
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D. not by Cisco CallManager but routed by the gateway under IOS Gatekeeper control
Answer: C
Question: 46
Which feature automatically switches between a range of video layouts according to the number
of participants joining or leaving a conference?
A. continuous presence
B. dynamic presence
C. dynamic layout
D. rate matching
E. automatic down-speeding
Answer: C
Question: 47
Company.com is implementing a Cisco IP Videoconferencing solution that includes a Cisco
CallManager and a Cisco IOS Gatekeeper. The customer uses H.323 and H.320 devices
exclusively. Video calls will use RTP streams for audio, video, and far-end camera control and a
sequence of call control signaling messages. What handles negotiation of the video codec
(H.261, H.263), resolution, frame rate, and H.323 annexes?
A. intercluster trunks
B. Cisco CallManager
C. Cisco MCM Gatekeeper
D. Cisco IOS Alternate Gatekeeper
E. video endpoints
Answer: B
Question: 48
Company.com is a large enterprise with many office sites. Company.com is planning to add IP
videoconferencing to the existing IP telephony network. It has been determined that an MC U will
be placed in each site. External participants in videoconferences will dial in using DID to reach
the conference MCUs. Internal participants will dial the proper extension numbers for
conferences. What does Cisco recommend for the videoconferencing gateway placement and the
IP-videoconferencing dial plan?
A. a single videoconferencing gateway with a single zone prefix for all MCUs
B. a single videoconferencing gateway, with the MCUs at each site having a separate zone
prefix that is independent of the area code
C. a videoconferencing gateway in every site, with an MCU zone prefix for each site that is
independent of the area code
D. a videoconferencing gateway in every site, and the MCU zone prefixes matching the local
area code
E. a videoconferencing gateway in every site, and all the MCUs placed in a single zone prefix
Answer: D
Question: 49
In which order does a H.323 client send H.225 setup messages to the servers in a Cisco
CallManager cluster?
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