Question 1

The problems associated with networked video are worse for networked audio.

Accepted Answer

This statement is false. The problems associated with networked video can be equally as bad or worse for networked audio, depending on the specific circumstances and technical issues. Both types of media can experience issues with latency, packet loss, jitter, and bandwidth limitations when transmitted over a network, and both require robust networking solutions to ensure optimal performance.

Question 2

In order to play audio and video clips downloaded off the network,it is necessary to have the proper ____ installed.
A)CODERs
B)CODECs
C)DECs
D)CODs

Accepted Answer

CODECs (short for compression/decompression) are software programs that are necessary to decode (play) audio and video clips that have been encoded (compressed) with a particular format. Without the appropriate CODECs installed, the media player will not be able to read the file and play the content.

Question 3

A Web page with one hundred images will require much longer to download and display if all the images are GIF instead of JPG.

Accepted Answer

JPG images are typically used for photographs and complex images due to their ability to compress file sizes significantly without a noticeable loss in quality, making them smaller in size compared to GIFs which are better suited for simpler images or animations. Therefore, a webpage with JPG images might load faster than one with GIFs, depending on the image complexity and compression.

Question 4

An experimental multicasting backbone,called ____,supports multicasting over the Internet.
A)CBone
B)MCastBone
C)Internet2
D)MBone

Accepted Answer

The experimental multicasting backbone referred to in the question is MBone. CBone is a different backbone network used for computer-supported cooperative work, MCastBone does not exist as a named backbone, and Internet2 is a separate, advanced research and education network.

Question 5

The ____ credentials provide authenticated access between the VoIP service provider and the local VoIP capable device.
A)NAS
B)SIP
C)SIL
D)SIB

Accepted Answer

The Session Initiation Protocol (SIP) credentials provide authenticated access between the VoIP service provider and the local VoIP capable device. SIP is a protocol used for initiating and terminating communication sessions, and it is widely used in VoIP services. NAS (Network Attached Storage) is a device used for storing and sharing data, SIL (System Integration Laboratory) is a testing and development environment, and SIB (Service Independent Building) is not a relevant term in this context.

Question 6

____________________ is a method for sending voice and fax data using the IP protocol.

Accepted Answer

The answer of ____________________ is a method for sending voice...

Question 7

The ____ file is the standard audio file format used by Windows.
A)AAC
B)MIDI
C)MP3
D)WAV

Accepted Answer

WAV (Waveform Audio File Format) is the standard audio file format used by Windows. It was developed by Microsoft and IBM and is capable of storing uncompressed audio data, making it a popular choice for high-quality audio recordings and editing. While other file formats such as MP3 and AAC offer compression to reduce file size, they sacrifice some audio quality in the process. MIDI (Musical Instrument Digital Interface) is not an audio file format, but rather a protocol used for communication between electronic musical instruments, computers, and other devices.

Question 8

GIF is the best format for high-quality images.

Accepted Answer

GIF is not the best format for high-quality images. While it is a popular format for small animations or simple graphics, it has limitations in terms of color range and image resolution. For high-quality images, formats such as JPEG, PNG, or TIFF are generally preferred.

Question 9

MPEG video compression is ____.
A)lossy
B)lossless
C)conservative
D)expensive

Accepted Answer

MPEG video compression is a lossy compression technique meaning that it sacrifices some quality to achieve smaller file sizes. This is in contrast to lossless compression techniques that maintain the original quality but result in larger file sizes.

Question 10

When displaying a transparent GIF image in a browser,the browser's ____ pixel color will be used for any transparent pixels.
A)background
B)foreground
C)default
D)GIF

Accepted Answer

The transparent pixels in a GIF image will take on the color of the background pixel of the browser in which it is being displayed. Therefore, the correct answer is A, background.

Question 11

A video file must be played with the same ____________________ used to create the video file.

Accepted Answer

The answer of A video file must be played with...

Question 12

____________________ refers to the combination of audio,image,video,animation,and text into a single presentation experience.

Accepted Answer

The answer of ____________________ refers to the combination of audio,image,video,animation,and...

Question 13

____ specify a value between 0 (full transparency)and 255 (no transparency)to provide the transparency of a pixel in the PNG format.
A)Beta channels
B)Omega channels
C)Alpha channels
D)Delta channels

Accepted Answer

Alpha channels specify the transparency of a pixel in the PNG format by providing a value between 0 (full transparency) and 255 (no transparency). Beta, Omega, and Delta channels are not associated with transparency in the PNG format.

Question 14

Web browsers accept three different types of image files: ____.
A)HTM images,JPEG images,and PNG images
B)GIF images,JPEG images,and TIF images
C)TIF images,JPEG images,and PNG images
D)GIF images,JPEG images,and PNG images

Accepted Answer

GIF, JPEG, and PNG are the three most widely recognized image file formats that web browsers can handle.

Question 15

When a GIF image is being displayed,any pixels whose color is the ____________________ color will cause the background to show through.

Accepted Answer

The answer of When a GIF image is being displayed,any...

Question 16

Since each pixel in a GIF image can be one of 256 colors,____ are needed to store the color for a pixel.
A)four bits
B)eight bits
C)ten bits
D)24 bits

Accepted Answer

Each pixel in a GIF image can be one of 256 colors, which means it can be represented by a value between 0 and 255. To store this value, 8 bits (1 byte) are needed, as each bit can represent either a 0 or a 1, giving 2^8 (or 256) possible values. Therefore, eight bits are required to store the color for a pixel in a GIF image.

Question 17

A(n)______________________________ customer purchases the VoIP product of their choice,and simply enables it to work on the ViaTalk network using the ViaTalk SIP credentials.

Accepted Answer

The answer of A(n)______________________________ customer purchases the VoIP product of...

Question 18

Animation in a GIF image is accomplished by storing all of the animation images in a single GIF image file,with appropriate time delays inserted between the display of each stored image,one after another.

Accepted Answer

This is the correct explanation of how animation in a GIF image is achieved.

Question 19

To reduce the required bandwidth,MPEG utilizes motion ____ that identify movement of blocks of pixels between frames.
A)volumes
B)pixels
C)vectors
D)blocks

Accepted Answer

MPEG utilizes motion vectors to represent the movement of blocks of pixels between frames. This technique reduces the amount of data that needs to be transmitted, thus reducing the required bandwidth.

Question 20

Some of the original image information is thrown away during the lossy compression process.

Accepted Answer

In lossy compression, some of the original image information is discarded in order to reduce the file size. This can result in a slight loss of image quality.

Quiz 14: Multimedia Networking

The problems associated with networked video are worse for networked audio.

In order to play audio and video clips downloaded off the network,it is necessary to have the proper ____ installed.

A Web page with one hundred images will require much longer to download and display if all the images are GIF instead of JPG.

An experimental multicasting backbone,called ____,supports multicasting over the Internet.

The ____ credentials provide authenticated access between the VoIP service provider and the local VoIP capable device.

____________________ is a method for sending voice and fax data using the IP protocol.

The ____ file is the standard audio file format used by Windows.

GIF is the best format for high-quality images.

MPEG video compression is ____.

When displaying a transparent GIF image in a browser,the browser's ____ pixel color will be used for any transparent pixels.

A video file must be played with the same ____________________ used to create the video file.

____________________ refers to the combination of audio,image,video,animation,and text into a single presentation experience.

____ specify a value between 0 (full transparency) and 255 (no transparency) to provide the transparency of a pixel in the PNG format.

Web browsers accept three different types of image files: ____.

When a GIF image is being displayed,any pixels whose color is the ____________________ color will cause the background to show through.

Since each pixel in a GIF image can be one of 256 colors,____ are needed to store the color for a pixel.

A(n)______________________________ customer purchases the VoIP product of their choice,and simply enables it to work on the ViaTalk network using the ViaTalk SIP credentials.

Animation in a GIF image is accomplished by storing all of the animation images in a single GIF image file,with appropriate time delays inserted between the display of each stored image,one after another.

To reduce the required bandwidth,MPEG utilizes motion ____ that identify movement of blocks of pixels between frames.

Some of the original image information is thrown away during the lossy compression process.