Module 3 Computer Concepts
If you press the key corresponding to letter A on the keyboard, what process is carried out inside the CPU to display the letter on the screen?
'A' is converted to binary code, which the CPU processes. The computer then converts the code back 'A' for display.
Which of these is an optical medium of storage?
Blu-ray discs
Which of the following refers to a condition in which the CPU performs well but the bus speed is slow?
Bottlenecking
What determines the speed at which data travels?
Bus width
Which of the following types of RAM needs to be constantly recharged to retain the contents?
Dynamic RAM (DRAM)
What is the correct sequence of processing instructions in a machine cycle?
Fetch decode execute store
When considering a computer to purchase, which of the following factors involves the operating system of the computer?
Platform
What device do e-learning applications usually use to help users with visual impairment read digital content?
Voice synthesizer
Which of the following is classified as input device?
Webcam
Which of the following factors can affect processor performance of a CPU?
Clock speed
Jason takes many photographs on his smartphone while on vacation in Italy. If Jason wants to access these pictures across multiple devices, including his computer, smartphone, and tablet, where should he store them?
Cloud storage
Which of the following devices is the easiest to upgrade, such as by adding RAM?
Desktop computers
Surya's computer monitor display does not seem to work despite repeated attempts to fix the issue. Which of the following is most likely to be causing display problems?
Faulty power or video cable
Daniel wants to buy a computer to use for playing games after work. He loves racing games and wants to make sure his device has all the specifications needed to run them smoothly and efficiently. Which of these factors should he consider?
Processor core - some applications, especially games, have greater processor requirements
Which type of memory is permanently installed on your computer and attached to the motherboard?
Read-only memory (ROM)
Jennifer turns on her laptop and hears a series of beeps. What do they probably indicate?
Refer to your computer's documentation to determine what the beeps indicate, as the computer hardware may be experiencing a problem.
What performance specification does 2 GHz refer to?
Speed at which the processor executes instructions
What is the most common type of storage device for transferring files from one computer to another?
USB flash drive
When should a user consider restoring the operating system?
When programs or apps do not start properly
Alex needs to email his graduation certificate to a prospective employer. He has only physical copies of the certificate. What device could he use to create an electronic copy of the certificate?
scanner
When Alice turned on her laptop this morning, the screen displayed only colorful horizontal lines. Which of the following is most likely to have a problem?
video card
Which type of a computer can be assembled using a monitor, a keyboard, a CPU, speakers, a printer and a mouse?
A desktop computer
A joystick is a pen-type input device used to draw and tap icons.
False
All-in-one computers are easier to service and upgrade but occupy more space than desktop computers.
False
Most computers can operate normally in extreme temperatures and withstand high humidity and power fluctuations
False
Which of the following is a game controller that is held with both hands and used to control movement of on-screen objects by pressing buttons and moving hardware components?
Gamepad
Rocco runs a software firm that creates database management systems for other businesses. How can he ensure that his employees' computers remain protected from viruses and other malware?
He should have periodic anti-virus scanning and software upgraded on all computers.
Jack needs a convenient way to browse the Internet, read emails, and store basic data when he travels. Which of the following would be the best option for him?
He should make sure to bring a tablet
What is the recommended solution if a computer performs slowly?
Install additional RAM.
Where on a computer is the operating system generally stored?
Internal hard drive
What printer is commonly used to produce high-quality professional drawings such as architectural blueprints?
Plotter
What devices do not need device drivers to be manually installed, and start to function as soon as they are connected to a computer?
Plug-and-play devices
Which of these is not an input device?
Printer
Which is the most suitable device to use in a classroom or a conference room to deliver presentations?
Projector
To resolve major computer issues, computer professionals often suggest restoring the operating system. Which of the following should happen before this step?
Transfer contents to an external storage device.
A CPU converts the data entered through the keyboard into output displayed on the monitor.
True
A device driver is a program that controls a device attached to the computer.
True
It is advised to fully charge the battery of a laptop before using it for the first time.
True
Peripheral devices, like a USB flash drive, are generally connected to your computer through ports
True
The Unicode coding scheme supports a variety of characters including those for Chinese, Japanese, and Arabic languages.
True
What is the first step to performing hardware maintenance?
Turn off the computer and remove its power source.
Which of the following is a necessary step in maintaining computer hardware?
Using a UPS or a surge processor
Manny copied a table from an MS Excel file, closed the file, and then pasted the table in an MS Word document. Where was the table stored after he copied it?
in RAM
When a CPU executes instructions as it converts input into output, it does so with _____.
the control unit and the arithmetic logic unit
What should you do if a headset plugged into your computer is not working properly?
INCORRECT: plug headphones back in
Alessandro wants to use his desktop computer to video chat with his mother. What hardware does he need to accomplish this?
Use his webcam and speakers so that he and his mother can both see and hear each other.
What is the binary system?
a number system with two digits, 0 and 1
What could cause an external drive, like a USB flash drive, to not be recognized when plugged into a computer?
A faulty port
Which of these hardware components can you use to store videos?
Hard drive
What type of hard drive has no moving parts, making it fast and durable?
solid state drive
