GCSE Unit 1: Data Representation

What do the words "Pixel" come from?

• A) Picture and Element

• B) Picture and Electrode

• C) Picture and Elevation

• D) Picture and Electron

What is the smallest unit of a digital image?

• A) Byte

• B) Pixel

• C) Bit

• D) Frame

How is a pixel usually represented?

• A) Triangle

• B) Circle

• C) Square

• D) Line

Which of the following is true about image resolution?

• Lower resolution means sharper image

• Higher resolution means larger file size

• Resolution is unrelated to file size

• Resolution is measured in colors

How is resolution typically measured?

• In inches

• In pixels per inch

• In colors

• In file size

Which statement is true about bitmap images?

• They do not lose quality when compressed.

• They are often used for line art and logos.

• They can be edited at the pixel level.

• They are stored as mathematical equations.

What does streaming allow you to do with a video?

• Download the video completely before watching

• Watch the video as it is downloaded in real time

• Only watch the video offline

• Edit the video while watching

Which statement is true about streaming?

• It requires a physical copy of the video

• It allows real-time viewing as the video downloads

• It is only available for music

• It requires a special streaming device

Which of the following is NOT a feature of streaming?

• Instant access to content

• Requires downloading the entire file first

• Real-time playback

• Access through various devices

What is done if the buffer isn’t filling quickly enough?

• Higher quality images are downloaded

• Lower quality images are downloaded

• The video is paused

• The video is stopped