Computer Fundamentals Quiz

What are the two coding systems used for coding character data?

• Binary and Decimal

• ASCII and EBCDIC

• ASCII and Unicode

• Unicode and Binary

Which of the following is a method used for error checking and correction?

• Parity bits

• Encryption

• Compression

• Tokenization

What can bit patterns represent other than numeric data?

• Only text

• Only images

• Graphics and sound

• Only sound

What is the main difference between analogue and digital data?

• The way they are processed

• The way they are stored

• The materials they are made of

• The way they represent values

What does an analogue to digital converter (ADC) do?

• Converts digital signals to analogue signals

• Converts analogue signals to digital data

• Converts digital data to binary code

• Converts binary code to analogue signals

What is the function of a digital to analogue converter (DAC)?

• Converts digital signals to analogue signals

• Converts analogue signals to digital data

• Converts digital data to binary code

• Converts binary code to analogue signals

What does the resolution of an image refer to in terms of bitmapped graphics?

• The number of bits stored for each pixel

• The size of the image file in bytes

• The number of dots per inch where a dot is a pixel

• The width in pixels x height in pixels of an image

How is the size of a bitmapped image calculated excluding metadata?

• Width in pixels x height in pixels

• Size in pixels x color depth

• Width in pixels + height in pixels

• Size in pixels / color depth

What is color depth in the context of bitmapped graphics?

• The number of pixels in an image

• The number of bits stored for each pixel

• The resolution of the image in dots per inch

• The width in pixels x height in pixels of an image

What are the two aspects of digital representation of sound described in the content?

• Sample resolution and file size

• Sampling rate and color depth

• Sample resolution and the Nyquist theorem

• File size and the Nyquist theorem