H11-861 Online Practice Questions and Answers

In H.460, ( ) defines the traversal of H.323 signaling between public and private networks.

A. H .460.18

B. H .460.19

C. H.460.20

D. H .460.21

Multichannel audio mixing uses quick voice detection so that background noises can be entirely cut. The traditional simple multichannel audio mixing will not introduce enormous background noises. ( )

A. TRUE

B. FALSE

Methods of improving architecture acoustics contain( )-(Select 3 answers)

A. get short reverberation time

B. get low background noise

C. get low corridor noises

D. get low expected noises

With static NAT, endpoints on private network have their SRC addresses ( ).

A. Unchanged

B. Translated to outbound NAT address

C. Translated to an available public IP address

D. Translated to the GK address

For SDP,the o line contains parameters related to the session participants. The first parameter indicates ( ).

A. the calling party name

B. the session identifier of the calling party

C. the network type

D. the address type

Color rendering index is a quantitative measure of the ability of a light source to reproduce the colors of various objects faithfully in comparison with a standard light source. A smaller value indicates a more faithful color. ( )

A. TRUE

B. FALSE

The audio test on the video terminal checks whether the audio output of the video terminal is correct. ( )

A. TRUE

B. FALSE

( ) is added into the SIP in June, 2002, which is the core standard of the SIP.

A. RFC3263

B. RFC3262

C. RFC3261

D. RFC3264

Dynamic Dual Streams,supports concurrent transmission of ( ) independent images.

A. 2

B. 3

C. 4

D. 5

Color temperature is a measure of the quality of optical source and spectrum. The unit of the color temperature is lux (Ix).( )

A. TRUE

B. FALSE