ISDS ch 3
While naming a file on the computer, if we 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 its ASCII binary code and stored in the memory unit. Then it is converted back to 'A' for display.
Which of the following refers to a condition in which the CPU performs well but the bus speed is slow?
Bottlenecking
What are the two important components of CPU that help in processing the input into output?
Control Unit and Arithmetic Logic Unit
Jennifer recently bought a new computer to type a new manuscript she's been working on. She also stored a lot of movies on it to watch during her free time. Though the performance was good at the beginning, it deteriorated quickly over a small period of time. Which of these is the most likely cause?
Declining free space on the hard drive
In which of the following storage device(s) does memory need to be constantly recharged to retain the contents?
Dynamic RAM (DRAM)
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
What is the correct sequence of processing instructions in a machine cycle?
Fetch decode execute store
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.
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 perform the task?
He should use a scanner, which would convert an image into an electronic file.
Ryan wants to install a new operating system on his laptop, but first he needs to safely store all his data - over 80 GB - so he doesn't lose any of his files. How should Ryan back up all his data?
He should use an external hard drive to store the data because the amount of data he needs to store is quite large.
The hard disk drive on Joyce's laptop can store up to 500 GB of data. She usually only saves official documents and a few songs that she listens to while she works. However, when she uses more than three applications at the same time, her laptop responds more slowly. What should she do to optimize her storage?
Increase the RAM on her laptop so that more space for temporary storage of data is available, hence, increasing the performance
What is the correct way to update a device driver?
Run the update within the OS or the latest software from the device manufacturer's website.
What performance specification does 2 GHz refer to?
Speed at which the processor executes instructions
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.
What is the first step to performing hardware maintenance?
Turn off the computer and remove its power source.
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.
Which of the following is a necessary step in maintaining computer hardware?
Using a UPS or a surge processor
In which format is data finally stored in computers?
binary digits
Which of these is an optical medium of storage?
blu-ray discs
what determines the speed at which data travels?
bus width
Which of these hardware components can you use to store videos?
hard drive
Manny copied a table from a MS Excel file, closed the file, and then pasted the table in an MS Word document. Where did the copied table get stored after he copied it?
in the RAM
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
What device do e-learning applications usually use to help users with visual impairment read digital content?
voice synthesizer
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 these, though not equally portable, is most powerful and usually easier to upgrade than others?
desktop
Which type of a computer can be assembled using a monitor, a keyboard, a CPU, speakers, a printer and a mouse?
desktop computer
what could cause an external drive, like a USB flash drive, to not be recognized when plugged into a computer
faulty port
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
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
