H11-861_V4.0

H11-861_V4.0 practice questions, page 2 of 2, with answer review and explanations.

Question 6

In the collaboration solution architecture, which of the following network elements are deployed at the media processing layer? (Choose all that apply.)

  1. SMC
  2. VP9860
  3. CloudRSE
  4. Box 310

Question 7

Assume that a dual-channel audio file uses the PCM encoding, the sampling frequency is 8 kHz, and each quantized sample value corresponds to an 8-bit binary code. What is the encoding rate (kbit/s) of the audio file?

  1. 128
  2. 256
  3. 64
  4. 196

Question 8

Generally, the bandwidth actually occupied by a video conference is greater than the conference bandwidth. What are the possible causes? (Choose all that apply.)

  1. IP packet headers occupy some bandwidth.
  2. Retransmission of lost packets occupies some bandwidth.
  3. Signaling interaction data occupies some bandwidth.
  4. UDP packet headers occupy some bandwidth.

Question 9

Assume that a channel of 4CIF analog TV signal uses a 48-bit color depth. Which of the following is nearest to the stream transmission speed of the signal before compression and encoding?

  1. 238 Mbit/s
  2. 557 Mbit/s
  3. 446 Mbit/s
  4. 600 Mbit/s

Question 10

Currently, the widely used video compression standards include H.263, H.264, H.265, MPEG-1, MPEG-2, and MPEG-4. The H.26X series standards are mainly used for real time video communication, and the MPEG series standards are mainly used for video storage (DVD), video broadcast, and video streaming media.

  1. TRUE
  2. FALSE