Quick CS Quiz

The purpose of the basic computer architecture components and how they are linked together is:

• To process data and instructions.

• To store data and instructions.

• To communicate with other computers.

• All of the above.

The need for interpreters and compilers to translate highlevel program code to binary (machine code instructions) is:

• To make the code more efficient.

• To make the code more portable.

• To make the code more readable.

• All of the above.

The energy use of computer systems can be reduced through:

• Using energy-efficient monitors.

• Powering down computers when they are not in use.

• Leaving computers on standby when they are not in use.

• All of the above.

The role of firewalls is to:

• Protect computer systems from unauthorized access.

• Control the flow of data between computer systems.

• Both of the above.

The use made of encryption in electronic communications is to:

• Protect the privacy of the data.

• Authenticate the sender and receiver of the data.

• Both of the above.

The purpose of data representation is to:

• Store data in a way that can be processed by a computer.

• Represent data in a way that can be understood by humans.

• Both of the above.

The floating point representation of positive real numbers using the terms mantissa and exponent is:

• A way of storing real numbers in binary.

• A way of representing the precision of a real number.

• Both of the above.

The vector graphics method of graphic representation for common objects is:

• A way of storing images in binary.

• A way of representing the shape and color of objects.

• Both of the above.

The bit-mapped method of graphics representation is:

• A way of storing images in binary.

• A way of representing the shape and color of objects.

• Both of the above.

The environmental impact of computer systems can be reduced through:

• Using energy-efficient monitors.

• Powering down computers when they are not in use.

• Leaving computers on standby when they are not in use.

• All of the above.