Worksheetsmemory and data storage
Total questions: 23
Worksheet time: 12mins
Computer memory are of two types :
Hard disk and Flash drive
Hard Disk and Memory Card
RAM and ROM
Internal memory and External memory
Data and instructions stored in this Internal memory is lost when computer is turned off
ROM
RAM
USB
Hard disk
This internal memory holds start up instructions that prepare the computer for use and check proper working of computer parts.
RAM
Flash Drive
ROM
Memory Card
The main storage medium for computers
RAM
Flash Drive
Hard disk
Memory Card
A storage medium for portable devices like digital cameras, mobiles.
Memory card
USB
CD
Hard Disk
An optical storage device that is used to record high quality video and sound.It can store data 6 times more than a CD
Blu Ray Disk
CD
DVD
Flash Drive
Most popular backup device.Small, lightweight plug and play device used to copy data from one computer to another
DVD
Hard disk
CD
Flash drive
Binary data on Optical discs is represented using...
Magnetic charges
Physical pits and lands
Electrical current
Lasers
The differences between ROM and RAM are...
ROM is non-volatile, RAM is volatile
ROM is read-only, RAM is read and writable
ROM is volatile, RAM is non-volatile
ROM is read and writable, RAM is read-only
What is the correct order from smallest to largest
Nibble, bit, byte, megabyte, kilobyte, gigabyte, terabyte
Bit, nibble, byte, kilobyte, megabyte, gigabyte, terabyte
Nibble, byte, bit, kilobyte, megabyte, gigabyte, terabyte
Bit, nibble, byte, kilobyte, megabyte, terabyte, gigabyte
Same as 1024 Gigabytes
1 Terabyte
1 Gigabyte
1Megabyte
1 Kilobyte
which of theses are advantages of Solid State Memory storage over Magnetic or Optical storage?
No moving parts, less can go wrong.
Faster to read and write to.
Cheaper than Magnetic or Optical devices, byte for byte.
Data stored on SS memory will last forever
Hard disk drives are a type of...
... primary storage
... secondary storage
... tertiary storage
...
Which is not a benefit of SSD over HDD
Lighter
More reliable
Lower power use
Longevity
Servers commonly use what type of secondary storage?
SSD
HDD
external SSD
USB Drives
What color laser do CD/DVDs use?
Red
Blue
Green
Colorless
What types of optical media stores its data in concentric tracks?
CD
DVD
DVD-RAM
Blue-ray disks
The smaller pits and bumps of a blue laser on an optical media disk allow for:
better birefringence results
worse birefringence results
more data storage
less data storage
USB flash memory uses NAND chips.
True
False
What is the file size for a text file that contain the following:
Welcome, to Computer Science.
29 bytes
26 bytes
28 bytes
32 bytes
A black and white image uses 1 bit per pixel. So a 64 bit image would be stored in an 8 byte file. How many bytes would it take to store that same image if it were in color?
512
64
192
24
Difference between Blu-Ray and DVDs (Choose two options):
Smaller ‘pits’ and ‘bumps’ bigger storage , 5 times than DVD
DVD have smaller storage size compared to Blu-ray
Blu-Rays are used for high definition sound track only
Comes with a secure encryption system
