Question 1

If frames are displayed on screen fast enough, we get an impression of
A)signals.
B)motions.
C)packets.
D)bits.

Accepted Answer

The human brain interprets frames displayed rapidly on a screen as continuous motion, which is the principle behind motion pictures and animation.

Question 2

H.323 uses G.71 or G.723.1 for
A)compression.
B)communication.
C)controlling.
D)conferencing.

Accepted Answer

H.323 uses G.711 or G.723.1 for compression, specifically for audio data compression in VoIP applications.

Question 3

To receive signal, a translator is needed to decode signal and encode it again at a
A)high quality.
B)lower quality.
C)same quality.
D)bad quality.

Accepted Answer

B

Question 4

Session Initiation Protocol (SIP), is very
A)independent.
B)flexible.
C)important.
D)layered.

Accepted Answer

SIP is considered flexible because it can be used for a variety of communication sessions, including voice, video, and messaging, and can be easily integrated with other protocols and services.

Question 5

In Audio and Video Compression, each frame is divided into small grids, called picture elements or
A)frame.
B)packets.
C)pixels.
D)mega pixels.

Accepted Answer

Pixels are the basic unit of composition for digital images, representing the small individual points of color that make up an image. In audio and video compression, frames are indeed divided into these small grids or picture elements known as pixels.

Question 6

Streaming stored audio/video, files are compressed and stored on a
A)ip.
B)server.
C)domain.
D)internet.

Accepted Answer

Streaming stored audio/video files are typically compressed and stored on a server, which allows users to access and stream the content over the internet.

Question 7

Live streaming is still using Transmission Control Protocol ( TCP), and multiple unicasting instead of
A)unicasting.
B)multicasting.
C)layered control.
D)protocol control.

Accepted Answer

Live streaming often uses multicasting to efficiently distribute content to multiple users, rather than sending separate streams to each user (unicasting), which is less efficient for large audiences.

Question 8

Moving Picture Experts Group (MPEG-2), was designed for high-quality DVD with a data rate of
A)3 to 6 mbps.
B)4 to 6 mbps.
C)5 to 6 mbps.
D)6 to 6 mbps.

Accepted Answer

MPEG-2 was designed to accommodate a range of data rates, but for high-quality DVD video, it typically operates within the range of 3 to 6 Mbps. This allows for a balance between quality and storage efficiency.

Question 9

Joint Photographic Experts Group (JPEG) is used to compress
A)music.
B)pictures.
C)images.
D)frames.

Accepted Answer

The answer of Joint Photographic Experts Group (JPEG) is used...

Question 10

Real-time traffic needs support of
A)unicasting.
B)multicasting.
C)layered control.
D)protocol control.

Accepted Answer

Real-time traffic, especially in applications like live streaming or video conferencing, benefits from multicasting because it allows the transmission of data packets to multiple destinations simultaneously, reducing bandwidth usage and ensuring efficient delivery to multiple users.

Question 11

We can divide audio and video services into
A)1 broad categories.
B)2 broad categories.
C)3 broad categories.
D)4 broad categories.

Accepted Answer

The answer of We can divide audio and video services...

Question 12

In Video Compression, an independent frame that is not related to any other frame is called
A)b-frame.
B)c-frame.
C)i-frame.
D)p-frame.

Accepted Answer

I-frames, or Intra-coded frames, are independent frames in video compression that do not require any other frame to decode, making them crucial for random access and recovery points in the video stream.

Question 13

. RTP uses a temporary even-numbered
A)rtcp.
B)smtp.
C)udp port.
D)none.

Accepted Answer

RTP (Real-time Transport Protocol) typically uses a temporary even-numbered UDP port for media streaming, with the subsequent odd-numbered port being used for RTCP (Real-time Transport Control Protocol) communications.

Question 14

HTTP client accesses Web server by using the
A)send message.
B)get message.
C)auto receive message.
D)none.

Accepted Answer

The correct term is "GET request," which is used by an HTTP client to request data from a web server.

Question 15

In Joint Photographic Experts Group (JPEG), a gray scale picture is divided into blocks of
A)5 x 5 pixels.
B)6 x 6 pixels.
C)7 x 7 pixels.
D)8 x 8 pixels.

Accepted Answer

In JPEG compression, a grayscale picture is divided into blocks of 8 x 8 pixels. This is a fundamental step in the JPEG compression algorithm, where each block is then processed separately for compression.

Question 16

MP3 produces three data rates from 96 Kbps to
A)128 kbps.
B)164 kbps.
C)256 kbps.
D)320 kbps.

Accepted Answer

The answer of MP3 produces three data rates from 96...

Question 17

For Music, we need to compress digitize signals at
A)1.41 i-mhz.
B)1.42 i-mhz.
C)1.45 i-mhz.
D)1.48 i-mhz.

Accepted Answer

The correct answer is A because the Nyquist rate for music is 1.411 MHz.

Question 18

Sometimes real-time traffic needs
A)organization.
B)traffic.
C)channelizing.
D)translation.

Accepted Answer

The answer of Sometimes real-time traffic needs
A)organization.
B)traffic.
C)channelizing.
D)translation....

Question 19

In Real-Time Transport Protocol (RTP), source periodically sends a source description message to give additional infonnation about
A)others.
B)itself.
C)protocols.
D)packets.

Accepted Answer

In RTP, the source sends a source description message to provide additional information about itself, such as its name, email, and phone number, to help in the identification or management of the source.

Question 20

Audio compression can be used for
A)speech or music.
B)voice and data.
C)picture and colors.
D)video and voice.

Accepted Answer

The answer of Audio compression can be used for
A)speech or...

Quiz 1: Audio and Video Compression, Streaming, and Real-Time Communication Protocols

If frames are displayed on screen fast enough, we get an impression of

H.323 uses G.71 or G.723.1 for

To receive signal, a translator is needed to decode signal and encode it again at a

Session Initiation Protocol (SIP) , is very

In Audio and Video Compression, each frame is divided into small grids, called picture elements or

Streaming stored audio/video, files are compressed and stored on a

Live streaming is still using Transmission Control Protocol ( TCP) , and multiple unicasting instead of

Moving Picture Experts Group (MPEG-2) , was designed for high-quality DVD with a data rate of

Joint Photographic Experts Group (JPEG) is used to compress

Real-time traffic needs support of

We can divide audio and video services into

In Video Compression, an independent frame that is not related to any other frame is called

. RTP uses a temporary even-numbered

HTTP client accesses Web server by using the

In Joint Photographic Experts Group (JPEG) , a gray scale picture is divided into blocks of

MP3 produces three data rates from 96 Kbps to

For Music, we need to compress digitize signals at

Sometimes real-time traffic needs

In Real-Time Transport Protocol (RTP) , source periodically sends a source description message to give additional infonnation about

Audio compression can be used for