Multimedia and Web Technologies Flashcard

Front

Compared to video streaming, music streaming generally requires:

Back

Less bandwidth

Answer explanation

Music streaming generally requires less bandwidth than video streaming because audio files are smaller in size compared to video files, making them easier to stream without consuming as much data.

Front

What is webcasting?

Back

Video broadcasting live over the internet

Answer explanation

Webcasting refers to video broadcasting live over the internet, allowing real-time streaming to viewers. This distinguishes it from pre-recorded videos or downloading, making the correct choice 'Video broadcasting live over the internet'.

Front

Which protocol is most often used for webcasting technology?

Back

RTP (Real-time Transport Protocol)

Answer explanation

RTP (Real-time Transport Protocol) is specifically designed for delivering audio and video over IP networks, making it the most suitable protocol for webcasting technology compared to HTTP, FTP, and SMTP.

Front

Which of the following is not a typical use of webcasting? Educational lectures, Company training, Long-distance meetings, Offline DVD distribution

Back

Offline DVD distribution

Answer explanation

Offline DVD distribution is not a typical use of webcasting, which is primarily for live streaming events like educational lectures, company training, and long-distance meetings.

Front

What does buffering mean in the context of streaming video?

Back

Temporarily storing a portion of data in memory before playback

Answer explanation

Buffering in streaming video refers to temporarily storing a portion of data in memory before playback. This allows for smoother viewing by preloading content, preventing interruptions during playback.

Front

What is the relationship between buffering and streaming?

Back

Buffering helps ensure smooth playback by preloading data before it plays.

Answer explanation

Buffering is essential for streaming as it preloads data, ensuring smooth playback without interruptions. This makes the correct choice: 'Buffering helps ensure smooth playback by preloading data before it plays'.

Front

An 8 kB image is downloaded at 56.6 kilobits per second. How many seconds does it take?

Back

2

Answer explanation

The original image is 51 kB and takes 10 seconds to download at 56.6 kbps. The download time is proportional to the file size. For an 8 kB image, the time is (8/51) * 10 seconds, which is approximately 1.57 seconds, rounded to 2 seconds.

Front

Why are portable document files (PDF) placed on internet sites?

Back

They are highly compressed yet still maintain all their information.

Answer explanation

PDFs are often used on the internet because they are highly compressed, allowing for efficient storage and quick downloads while preserving all information, making them ideal for sharing documents.

Front

When video content is streamed from the internet and accessed on a computer, where is the data stored?

Back

Data is continuously stored in a buffer and video content is displayed as data is received.

Answer explanation

When streaming video, data is not fully saved on the hard drive or in Temporary Internet Files. Instead, it is continuously buffered, allowing playback as data is received, making this the correct choice.

Front

What is the term given to the measurement of internet speed?

Back

Megabits per second

Answer explanation

The term 'Megabits per second' (Mbps) is commonly used to measure internet speed, indicating how many megabits of data can be transmitted in one second. This makes it the correct choice over the other options.