#3 Input, Output and Storage

1. Which of these is a difference between RAM and ROM?

• A. RAM is internal memory but ROM is not
• B. RAM is volatile, unlike ROM
• C. ROM is volatile, unlike RAM
• D. ROM is internal memory but RAM is not

2. Which of the following storage devices is the most suitable for storing a collection of over 30 films?

• A. CD-RW
• B. Hard disk drive
• C. Magnetic tape
• D. Blu-ray disc

3. Which of the following input devices is most likely to be used by a computer user who is blind?

• A. Loudspeaker
• B. Touchscreen
• C. Mouse
• D. Microphone

4. Which of the following storage devices cannot be described as flash storage?

• A. SD card
• B. Blu-ray disc
• C. USB memory pen
• D. Solid state drive

5. Which of the following optical storage media has the lowest storage capacity?

• A. Blu-ray disc
• B. DVD-R
• C. DVD-RW
• D. CD-ROM

6. Which of the following is not a characteristic of a Blu-ray disc?

• A. The read laser uses ony the blue light spectrum
• B. Data is tightly packed into a physically narrow spiral track that is read from and written to with a fine light beam
• C. It has an approximate capacity of 4.7 GB
• D. It can be read from and written to at the same time

7. Explain what is meant by virtual storage

• A. A portion of the hard disk allocated by the operating system to hold data/instructions when the main memory is full but a small amount of extra storage would be beneficial in the short term
• B. A storage device constructed in a virtual reality system; it does not physically exist
• C. A component of a solid state drive (SSD) that can temporarily hold data and instructions, thus behaving like RAM and cache. As it is volatile, all data and instructions is lost when the computer loses power.
• D. An optical disk removed from the disk drive and put back into its case

8. Name one input device found at a supermarket checkout.

• A. An actuator to open the cash drawer
• B. The hard disk that holds the stock database
• C. The LCD for showing the total due in green against a black background
• D. The touchscreen for managing the sale

9. Which of the following storage devices is likely to be used to carry a slideshow presentation to a job interview?

• A. Blu-ray disk
• B. USB flash memory pen
• C. Magnetic tape
• D. Touchscreen

10. Explain why installing flash storage onto a laptop is advantageous compared to using a hard disk.

• A. Flash storage is cheaper per GB than hard disk space
• B. Hard disks are bulkier and their moving parts make them more susceptible to damage
• C. Flash storage does not ever get hot
• D. Flash storage is easier to obtain than a hard disk