Exam Name: Rich Media Communications
Exam Type: Cisco
Exam Code: 642-481 Total Questions: 55
Page 13 of 17
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E. It is required for simultaneous support for H.323 and SCCP continuous presence sessions.
Answer: B, E
Question: 40
Company.com has deployed a combination of Cisco VT Advantage cameras and H.323 video
room systems. The Cisco VT Advantage camera users are complaining that many conferences
are setting up as audio only. Which configuration parameter needs to be changed to resolve this
videoconference issue?
A. The MRGL that is assigned to the device pool for only IP phones should not include the video
MCU.
B. The MRGL that is assigned to the H.323 video room systems should use the same MRGL as
the IP phones, but have the MCU as the first resource.
C. The MRGL that is assigned to the H.323 video room system should use an empty capabilities
set.
D. The MRGL that is assigned to the IP phone should include the empty capabilities set.
Answer: A
Question: 41
Company.com is implementing a Cisco IP Videoconferencing solution that includes a Cisco
CallManager and a Cisco IOS Gatekeeper. Company.com 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. The customer is using the Alt-GK feature to protect
the video telephony service from component failures. The customer is concerned that some of the
existing H.323 devices may not support Alt-GK. What is the most cost-effective solution that will
provide the resilience that the customer desires without upgrading or replacing the existing H.323
devices?
A. Use Hot Standby Router Protocol.
B. Use the gateway as a backup gatekeeper.
C. All H.323 devices support Alt-GK.
D. Cisco CallManager provides the backup gatekeeper function in conjunction with the existing
video gateway.
Answer: A
Question: 42
Which call would most likely require an audio transcoder?
A. 128-kbps ISDN call to MCU
B. 128-kbps H.323 call to MCU
C. 128-kbps ISDN call to H.323 endpoint
D. 384-kbps ISDN call to H.323 endpoint
E. 384-kbps H.323 call to MCU
Answer: A
Question: 43
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