Cisco 400-051 (CCIE Collaboration) 시험에 도전해보려고 없는 시간도 짜내고 거금을 들여 학원을 선택하셨나요? 사실 IT인증시험은 보다 간단한 공부방식으로 준비하시면 시간도 돈도 정력도 적게 들일수 있습니다. 그 방법은 바로 Pass4Test의 Cisco 400-051 (CCIE Collaboration) 시험준비덤프자료를 구매하여 공부하는 것입니다. 문항수도 적고 시험예상문제만 톡톡 집어 정리된 Cisco 400-051 (CCIE Collaboration) 덤프라 시험합격이 한결 쉬워집니다.
NO.1 In Cisco IOS routers, which chipset is the PVDM-12 DSP hardware based on?
A. C542
B. C549
C. C5510
D. C5421
E. C5409
Answer: B
NO.2 Which statement about G.722.1 codec support on Cisco Unified Communications Manager is
true?
A. It is always preferred by Cisco Unified Communications Manager over G.711.
B. It is a high-complexity wideband codec.
C. It operates at bit rates of 15.2 and 13.3 kb/s.
D. It is supported for SIP and SCCP devices.
E. It is supported for SIP and H.323 devices.
Answer: E
Explanation:
G.722.1 is a low-complexity wideband codec operating at 24 and 32 kb/s. The audio quality
approaches that of G.722 while using at most half the bit rate. As it is optimized for both speech and
music, G.722.1 has slightly lower speech quality than the speech-optimized iSAC codec. G.722.1 is
supported for SIP and H.323 devices.
Topic 3, Cisco Unified Communications Manager (CUCM)
NO.3 Which two types of devices on Cisco Unified Communications Manager support iSAC? (Choose
two.)
A. MGCP
B. SIP
C. SCCP
D. Music on Hold server
E. H.323
Answer: B,C
Explanation:
iSAC-Internet Speech Audio Codec (iSAC) is an adaptive wideband audio codec, specially designed to
deliver wideband sound quality with low delay in both low and medium-bit rate applications. Using
an adaptive bit rate of between 10 and 32 kb/s, iSAC provides audio quality approaching that of
G.722 while using less than half the bandwidth. In deployments with significant packet loss, delay, or
jitter, such as over a WAN, iSAC audio quality is superior to that of G.722 due to its robustness. iSAC is
supported for SIP and SCCP devices. The Cisco Unified Communications Manager IP Voice Media
Streaming App (IPVMSApp), which includes Media Termination Point, Conference Bridge, Music on
Hold Server, and Annunciator does not support iSAC. MGCP devices are not supported.
NO.4 Which SIP request is used by Cisco Unified Communications Manager to signal DND status
changes to a Cisco 9971 IP Phone?
A. OPTIONS
B. NOTIFY
C. INFO
D. REFER
E. UPDATE
Answer: D
NO.5 Which two responses are examples of client error responses in SIP protocol? (Choose two.)
A. 302 Moved Temporarily
B. 404 Not Found
C. 503 Service Unavailable
D. 502 Bad Gateway
E. 604 Does Not Exist Anywhere
F. 408 Request Timeout
Answer: B,F
Explanation:
Client Error (400 to 499)-Request contains bad syntax or cannot be fulfilled at this server. This class of
400 to 499 contains only error messages.
NO.6 Refer to the exhibit.
IP phone 1 has the MAC address 11111.1111.1111, while IP phone 2 has the MAC address
2222.2222.2222. The first two incoming calls were answered by IP phone 1, while the third incoming
call was answered by IP phone 2. What will happen to the fourth incoming call?
A. Both phones will ring, but only IP phone 2 can answer the call.
B. Both phones will ring and either phone can answer the call.
C. Only IP phone 2 will ring and can answer the call.
D. Neither phone will ring and the call will be forwarded to 2100.
E. Neither phone will ring and the call will be forwarded to 2200.
Answer: B
Explanation:
In shared line configuration phone share the same line so it is possible for any phone to answer the
call.
NO.7 What is the maximum number of Cisco Unified Communications Manager subscriber pairs
in a megacluster deployment?
A. 4
B. 8
C. 12
D. 16
E. 32
Answer: B
NO.8 Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP
trunk between two Cisco IOS gateways?
A. SIP UPDATE
B. SIP OPTIONS
C. SIP SUBSCRIBE
D. SIP INFO
E. SIP NOTIFY
Answer: D