Computer Science Quiz

The CPU is also known as:

• The brain

• The processor

• The central processing unit

• All of the above

What is a machine cycle:

• Data measured in megahertz.

• Data measured in gigahertz.

• A sequence of instructions performed to execute one program instruction.

• All of the above

The speed at which the CPU processes data to convert is measured in what:

• Megahertz

• Gigahertz

• Nanoseconds

• A And B

The CPU primary responsibility is the movement of data and instructions from itself to main memory and ALU and back. Arrange the CU execution of instructions in the correct order by placing the execution instructions letter in the box provided:

I. Sends data to memory unit after processing.

II. Fetches data required by the instruction from memory.

III. Fetches the instruction from memory.

IV. Decode the instruction.

• IV, I, III, II

• III, II, IV, I

• I, IV, III, II

• II, I, III, IV

The different types of computer are:

• Personal computers (pcs), laptops and minicomputers

• Mainframes, supercomputers and tablet pc

• Electronic organizers and palmtop computers and embedded computers

• All of the above

The Occupational Safety and Health Act applies to all employees who work for an employer that is engaged in a business affecting :

• Internal security

• Interstate commerce

• Surrounding environment and natural ecosystems

• Overall health and safety of civilians

Consider the following statements: I. An overhead crane is often used in the assembly area of a factory or in a warehouse II. Tower crane is used in the construction of high rise buildings and usually the tallest type of crane. Which of the statements is/are correct?

• I only

• II only

• Both I and II

• Neither I and II

What is the best way of dealing with a hazard to ensure others are not put at risk?

• Remove it immediately

• Leave it for others to sort out.

• Place a barrier tape around it.

• Display a notice or warning sign

The legal responsibilities of an employer with regards to health and safety include what?

• Charging employees for replacing damaged or lost PPE

• Providing safe systems of work for all employees

• Taking out additional insurances for dangerous work

• Ensuring that only one member of staff works on a dangerous job

What does PPE stand for?

• Protective Preventative Equipment

• Personal Protective Equipment

• Personal Preventative Equipment

• People's Protective Equipment