ICT Lesson 2 Review - Hardware

Oscar wants to make sure he chooses the fastest one. Which of the following processors would perform the fastest?

• 2.8 GHz

• 3.4 GHz

• 1.3 GHz

• 2.2 GHz

Answer explanation

The 3.4 GHz processor would perform the fastest. A faster clock speed results in faster performance.

What protects the components stored inside a computer system unit?

• Power supply

• Case

• Hard drive

• RAM

Answer explanation

A case is used to protect internal components within a computer.

Which component stores data being accessed by the CPU?

• Power supply

• Hard drive

• RAM

• Motherboard

Answer explanation

RAM (Random Access Memory) stores data being accessed by the CPU. The hard drive stores data that is not being accessed by the CPU.

What is the term for the main circuit board of your computer to which other components are attached so that everything in your computer works together?

• Central processing unit

• Power supply

• Hard drive

• Motherboard

Answer explanation

The motherboard is the main circuit board of your computer to which other components are attached so that everything in your computer works together.

What is the purpose of the central processing unit (CPU) in a computer?

• It stores the software and data

• It provides electricity to the rest of the system.

• It houses the main circuit board.

• It performs the calculations and processing.

Answer explanation

The central processing unit (CPU) is often called the "brain" of your computer. Its purpose is to perform all of the calculations and processing for the computer. Most CPUs in computers are made by Intel or AMD for PCs and Apple computers use their own version of the CPU. In today's computers, you may have a CPU with multiple cores each performing a different task.

Computers use electricity. The circuits in computers have electrical resistance. When electricity flows through resistance, it generates heat.

Tom is custom building his own computer for college. He wants the computer to be able to perform fast when multitasking, have amazing graphics, large capacity to store information, and be a laptop. Tom is choosing between two hard drives: solid state drive (SSD) or magnetic hard drive. Which choice would work best with his needs?

• The SSD because it is faster and offers additional stability.

• The SSD because it is less expensive and has moving parts to read the information on the computer.

• The magnetic hard drive because it is less expensive and has moving parts to read the information on the computer.

• The magnetic hard drive because it is faster and offers additional stability.

Answer explanation

Today, there are two types of hard drives that are most commonly used: solid state drives (SSDs) are faster and have no moving parts (offering additional stability) and magnetic hard drives which are less expensive but have moving parts and are susceptible to breaking from a fall.

Which device is an input device?

• Monitor

• Keyboard

• Speakers

• Projector

Answer explanation

A keyboard is an input device because is used to provide information to a computer. Speakers, projectors and monitors are all output devices because they display data that has been processed by the computer.

For what purpose should you use a mouse?

• To transfer audio (sounds, music) to a computer as digital files

• To write directly on a touch screen

• To click, highlight and drag graphical representations (icons) of resources on a computer

• To input text and numbers into a computer

Answer explanation

You use a mouse to click, highlight and drag graphical representations (icons) of resources on a computer.

Which input device should you use to transfer audio (sounds, music) to a computer as digital files?

• Digital camera

• Scanner

• Mouse

• Microphone

Answer explanation

You use a microphone to transfer audio (sounds, music) to a computer as digital files.

Julie just started a new job at a department store. She is learning how to check out customers using a cash register. Which input device would Julie use to scan items as the customers check out?

• Stylus

• Gamepad

• Barcode reader

• Fingerprint scanner

Answer explanation

A barcode reader enables users to scan and read information from printed barcodes, such as price information on items in a store.