H11-861-ENU : HCNP-VC(Huawei Certified Network Professional Video Conference) Exam

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H11-861-ENU
HCNP-VC(Huawei Certified Network Professional Video Conference)
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Question: 50
The MP can provide the following functions. () (Select 2 answers) A . Stream forwarding
B . Call
C . Rate adaptation
D . Conference control
Answer: AC
Question: 51
For FEC, When both parties establish a call and the packet loss in media stream exceeds 0.1% within 10s, the FEC function is enabled. FEC separates some bandwidth from the call bandwidth to transmit anti-dropping redundant stream. ( )
A . TRUE B . FALSE
Answer: A
Question: 52
Audio Enhancement Technologie-ANR is used to adjust the voice volume of a telephone call. () A . TRUE
B . FALSE
Answer: B
Question: 53
RFC2190 defines three formats for H.263 payload header: modes A, B, and C. Mode A is recommended and also the most common one. ()
A . TRUE B . FALSE
Answer: A
Question: 54
The three frame types in H.264 are (). A . A, Q, P
B . B, I, P
C . C, Q, B
D . T, C, B
Answer: B
Question: 55
After you define the open logical channel on a private network terminal inside a firewall, if (), the media streams can be transmitted in one direction only.
A . The firewall does not have the relevant port enabled.
B . The private IP address cannot be found for media stream transmission. C . The master and slave relationship cannot be determined.
D . Capability negotiation cannot be implemented.
Answer: A
Question: 56
NAT works at the (). A . Data link layer
B . Network layer
C . Application layer D . Transport layer
Answer: B
Question: 57
In RTCP packet, Sender report (SR) used for transmission and reception statistics from sending gateways. ( ) A . TRUE
B . FALSE
Answer: A
Question: 58
RFC 3550 defines () RTCP packet types to carry a variety of control information. A . 3
B . 4
C . 5
D . 6
Answer: B
Question: 59
MCU Video Firewall Mode has advantages, but it also has limitation, such as (). (Select 3 answers)
A . The MCU supports communication between only two networks. The communication among more than two networks, however, is not supported.
B . The GE0 port must register with a G
C . The GE1 port is used only for calls by number
D . The endpoint at the GE1 side does not support the SiteCall service.
E . Sites connected through GE1 ports does not support service switchovers.
Answer: ACD
Question: 60
Audio signals can be encoded in the following modes. () (Select 3 answers) A . Waveform coding
B . Forecast coding C . Parameter coding D . Hybrid coding
Answer: ACD
Question: 61
Which of the following is not a disadvantage of forward error correction. () A . Occupation of more bandwidth
B . Deterioration of video quality C . Delay
D . Aggravation of video jitter
Answer: D

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