ECS Final Exam 2023 R1 Copy

Front

What is the primary circuit board of a computer called?

Back

Motherboard

Answer explanation

The primary circuit board of a computer is called the motherboard. It is responsible for connecting and coordinating all the components of the computer.

Front

The brains of the computer.

Back

CPU

Answer explanation

The CPU, or Central Processing Unit, is the brains of the computer. It is responsible for executing instructions and performing calculations. It is the correct choice for this question.

Front

A mechanical long term storage solution, this memory relies on magnets and spinning disks to read and write data. This is usually connect via a special cable to the board. What is the name of this device?

Back

Hard Disk Drive

Answer explanation

A hard disk drive (HDD) is a mechanical long term storage solution that uses magnets and spinning disks to read and write data. It is connected to the board via a special cable.

Front

What is Random Access Memory (RAM)?

Back

Volatile form of a computer memory

Answer explanation

Random Access Memory (RAM) is a volatile form of computer memory. It is used to store data that can be accessed quickly by the computer's processor. RAM is not a non-volatile memory and it is not used to store larger programs. It is also not a collection of unorganized facts. The correct choice is 'Volatile form of a computer memory'.

Front

What is usually held in the contents of RAM?

Back

Operating System and currently running programs

Answer explanation

RAM usually holds the Operating System and currently running programs. It stores data temporarily for quick access by the CPU.

Front

What is stored in Read Only Memory (ROM)?

Back

BIOS and boot sequence (the computer's initial start-up process)

Answer explanation

ROM stores the BIOS and boot sequence, which are essential for the computer's initial start-up process.

Front

How many bits make a byte?

Back

8

Answer explanation

A byte is made up of 8 bits. Each bit represents a binary value of either 0 or 1. Therefore, the correct answer is 8.

Front

Convert the Hex number AA to binary.

Back

1010 1010

Answer explanation

The correct choice is '1010 1010' because it represents the hexadecimal number AA in binary form.

Front

Convert 0100 0001 to decimal

Back

65

Answer explanation

To convert a binary number to decimal, multiply each digit by 2 raised to the power of its position and sum the results. In this case, the binary number 1010 1010 is equal to 170 in decimal. Therefore, the correct answer is 170.

Front

Write 45 as a binary number

Back

00101101

Answer explanation

To convert 45 to binary, divide it by 2 repeatedly and note the remainders. The correct binary representation is 00101101, which matches the last option.