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J277 OCR 1.2 Memory and Storage

Total questions: 86

Worksheet time: 55mins

Name
Class
Date
1.
ROM stands for...
a)
Read Optical Memory
b)
Random Only Memory
c)
Read Only Memory
d)
Random Optical Memory
2.
RAM stands for ...
a)
Read Access Memory
b)
Random Application Memory
c)
Read Application Memory
d)
Random Access Memory
3.
This is a method of making a computer appear to have more primary memory than it has really has physically. For instance a PC might have 2Gb of RAM as primary memory, but ___ of 4Gb.  If a computer relies on this memory it will be slow.
a)
Virtual Memory
b)
Random Access Memory
c)
Read Only Memory
d)
Cache Memory
4.
Why is Virtual Memory needed in a computer system?
a)
It is used as a fast type of memory for programs currently in use to speed up the performance of a computer.
b)
When several programs run at the same time, the RAM can be full. Instead of closing programs the Operating system uses virtual memory to store some data.
5.
Where is data stored when it is Virtual Memory?
a)
It is stored on a area of a secondary storage device e.g. hard disk drive.
b)
It is stored in the RAM.
c)
It is stored in the ROM.
d)
It is stored in an optical drive e.g. CD.
6.
What is a disadvantage of Virtual Memory?
a)
Read/Write speed of a hard disk drive is slower than RAM. If the computer has to rely on this, the system is much slower.
b)
Read/Write speeds of a hard drive are faster than RAM, meaning the system is much faster.
7.

Which of these is Non-Volatile

a)

RAM

b)

ROM

c)

Registers

d)

Virtual Memory

8.

Function of RAM

a)

Bootstrap

b)

Currently Used Instructions

c)

BIOS

d)

Memory Management

9.

Function of ROM

a)

Load up Bootstrap

b)

Currently Used Instructions

c)

Frequently Used Instructions

d)

Saves Data

10.

What is Faster?

a)

RAM

b)

Cache

c)

ROM

11.

What level of cache is better?

a)

Level 1

b)

Level 2

c)

Level 3

d)

Equal

12.

Which of these is attached to the CPU?

a)

Cache

b)

RAM

c)

Operating System

13.

What is the backup of RAM?

a)

Virtual Memory

b)

Operating System

14.

Where does the BIOS live?

a)

RAM

b)

Cache

c)

Hard disk

d)

ROM

15.

What type of storage is a DVD ROM?

a)

Optical

b)

Magnetic

c)

Solid State

d)

It is not a storage device

16.

What type of storage is a USB memory stick?

a)

Optical

b)

Magnetic

c)

Solid State

d)

It is not a storage device

17.

What type of storage is a SSD card?

a)

Optical

b)

Magnetic

c)

Solid State

d)

It is not a storage device

18.

What type of storage is a HDD?

a)

Optical

b)

Magnetic

c)

Solid State

d)

It is not a storage device

19.

Which of the following types of storage would likely access its data the fastest?

a)

Optical

b)

Magnetic

c)

Solid State

d)

It is not a storage device

20.

Which of the following types of storage is the most durable?

a)

Optical

b)

Magnetic

c)

Solid State

d)

They are all the same

21.

Which of the following types of storage is the most expensive per MB/GB?

a)

Optical

b)

Magnetic

c)

Solid State

d)

They are all the same

22.

Why is a Hard Disk Drive (HDD) not very portable?

a)

It has moving parts

b)

It is too large

c)

It will break if you touch it

d)

It is too small

23.

Why does a laptop need secondary storage?

a)

To backup files to move to another computer

b)

To store data, files and software for future use

c)

To storage programs that are currently running

d)

To store data that the processor needs

24.
Which is the smallest storage unit in a computer?
a)
Bit
b)
Megabyte
c)
Nibble
d)
Terabyte
25.
How many bits are in a nibble?
a)
2 bits
b)
4 bits
c)
6 bits
d)
8 bits
26.
Convert the denary value 56 into an 8-bit binary number
a)
11000000
b)
00001111
c)
00111000
d)
01010101
27.
What is the largest number you can represent with 8 bits?
a)
64
b)
128
c)
200
d)
255
28.

Which number base is Binary?

a)

10

b)

2

c)

16

29.

Convert the denary number 11 into binary

a)

0011

b)

1011

c)

1100

d)

1010

30.

Convert the denary number 9 to binary

a)

1010

b)

1011

c)

1001

d)

0111

31.

Convert the denary number 21 into binary

a)

0001 0101

b)

0011 0101

c)

0111 0111

d)

0100 0101

32.

Convert the denary number 100 into binary

a)

0111 0100

b)

0110 0100

c)

0101 100

d)

0110 1100

33.

Convert the binary number 0000 1111 to denary

a)

15

b)

12

c)

10

d)

8

34.

Convert the binary number 0001 1001 to denary

a)

21

b)

23

c)

25

d)

27

35.

Convert the binary number 0011 1111 into denary

a)

59

b)

61

c)

63

d)

65

36.

Convert the binary number 1111 1111 into denary

a)

253

b)

255

c)

256

d)

257

37.

What is the hexadecimal value for the denary number 12

a)

A

b)

B

c)

C

d)

D

38.

What is the hexadecimal value for the binary number 0000 1111

a)

0D

b)

0E

c)

FF

d)

0F

39.

Convert the binary number 1001 1111 to hexadecimal

a)

8D

b)

8E

c)

9E

d)

9F

40.

Convert the binary number 1100 0111 to hexadecimal

a)

C7

b)

A6

c)

B7

d)

D7

41.

What it is known as when a calculation has been run but there is not enough space to store the answer?

a)

Syntax Error

b)

Overflow Error

c)

Indentation Error

42.
A gigabyte consists of 1024:
a)
megabytes
b)
terabytes
c)
kilobytes
d)
nibbles
43.
The following is a correct order of units of storage from lowest to highest:
a)
a bit, a nibble, a byte, a kilobyte, a megabyte, a gigabyte, a terabyte
b)
a bit, a byte, a nibble, a kilobyte, a megabyte, a gigabyte, a terabyte
c)
a bit, a nibble, a byte, a megabyte, a kilobyte, a gigabyte, a terabyte
d)
a byte, a bit, a nibble, a megabyte, a kilobyte, a gigabyte, a terabyte
44.

Which is larger?

a)

Megabyte

b)

Gigabyte

45.

Which is larger?

a)

Bit

b)

Byte

46.

Which is larger?

a)

Megabyte

b)

Kilobyte

47.

Convert 129 to binary

a)

10000001

b)

01111110

c)

01000000

d)

11001100

48.

Convert 3 to binary

a)

10000001

b)

01111110

c)

00000011

d)

11001100

49.
What is 126 in hexadecimal
a)
7E
b)
111110
c)
76
d)
7F
50.
What is 27 in hexadecimal
a)
1B
b)
17
c)
11011
d)
1C
51.
What is 19 in hexadecimal
a)
13
b)
10011
c)
19
d)
1A
52.
Colour depth refers to:
a)
How many bits are used in a file to store colour information in every pixel
b)
Resolution divided by the number of colours in an image.
c)
Degree of file compression applied to an image file.
d)
Repeated resampling of an image.
53.
The smallest unit of data stored in an image file is called:
a)
Pixels
b)
Resolution
c)
Alpha
d)
Bitmap.
54.

How many bits per pixel do you need to make 4 colours?

a)

colour depth of 1

b)

colour depth of 2

c)

colour depth of 3

d)

colour depth of 4

55.

Bitmap Colour Depth is

a)

the colour of each pixel.

b)

the density of pixels in an image.

c)

information stored in an image to help recreate the image.

d)

the number of bits used for each pixel.

56.

What is the file size in bits, of a 10x10dpi bitmap image with a colour depth of 4 bits?

a)

4000 bits

b)

1000 bits

c)

1600 bits

d)

400 bits

57.

Increasing Colour Depth and Resolution

a)

increases the File size

b)

decreases the File size

c)

increases memory

d)

decreases sound

58.

How would decreasing the DPI of an image affect the image quality?

a)

It would make it more colourful

b)

It would make it more detailed

c)

It would make it less colourful

d)

It would make it less detailed

59.

How is Unicode different from ASCII

a)

Unicode represents fewer characters

b)

Unicode represents more characters

c)

Unicode isn't for letters

d)

Unicode doesn't have numbers

60.

Upper and lower case letters have a different ASCII code.

a)
True
b)
False
61.

What is the maximum number of values that can be represented in 7 bits?

a)
16
b)
256
c)
65,536
d)
128
62.

What is sample resolution?

a)

The number of bits used to store each sample

b)

The number of times a wave is sampled

c)

How loud a sound is

d)

How quiet a sound is

63.

What is the sample rate?

a)

The number of times a sound wave is sampled per second

b)

The number of bits used to store each sample

c)

How loud a sound is

d)

The size of the sound wave

64.

What is amplitude?

a)

Number of samples taken

b)

The number of bits per sample

c)

The height of the sound wave

d)

The pitch

65.
What is Pitch?
a)
How loud or soft a sound is
b)
muscle that holds vocal cords
c)
movement back and forth
d)
how high or low a sound is
66.
Identify a false statement:
a)
Higher bit rates usually improve the sound quality and result in smaller file size.
b)
Higher bit rates usually improve the sound quality but result in larger file size.
c)
To record a sound into binary format, ADC will be applied rather than DAC.
67.
Choose the best answer about character sets:
a)
All characters in character sets are stored in binary.
b)
Some characters in character sets are stored in binary.
c)
Only binary characters in character sets are stored in binary.
68.
Unicode can represent:
a)
65,536 different characters
b)
255 characters
c)
127 characters
69.
A gigabyte consists of 1024:
a)
megabytes
b)
terabytes
c)
kilobytes
d)
nibbles
70.
How many colours can be used for each pixel if the colour depth is 4 bit?
a)
4 colours
b)
5 colours
c)
15 colours
d)
16 colours
71.
Increasing the colour depth means…
a)
A bigger range of colours can be used for each pixel
b)
More pixels are in the image.
c)
More colours are in the image.
d)
Darker colours
72.
Additional Information about the image file is stored as
a)
Metadata
b)
Properties
c)
File summary
d)
Pixels
73.
The number of pixels per inch in an image is known as the
a)
Dimensions
b)
Colour depth
c)
Resolution
d)
Megapixels
74.
The binary code for each pixel is used to determine
a)
Which colour will be displayed
b)
How big the image is
c)
What shape the image is
d)
How many pixels will be in the image
75.
How could you reduce the file size of an image?
a)
Reduce the numbr of colours used per pixel (colour depth)
b)
Reduce the dimensions of the image.
c)
Compress the file using a lossy compression file type.
d)
All of these
76.
Define the term "Resolution"
a)
The number of bits used per pixel (BPP).
b)
The number of colours used in an image.
c)
The number of pixels per inch (PPI).
d)
The total number of pixels in an image.
77.
Define the term "Colour Depth"
a)
The number of bits used per pixel (BPP).
b)
The number of colours used in an image.
c)
The number of pixels per inch (PPI).
d)
The total number of pixels in an image.
78.
Which of the following file types will use lossy compression to reduce the size of the image file?
a)
JPEG (JPG)
b)
BMP (Bitmap)
c)
MP3
d)
MPEG
79.
Which of the following file types will use lossless compression to reduce the size of the image file?
a)
JPEG (JPG)
b)
BMP (Bitmap)
c)
MP3
d)
MPEG
80.
What type of compression would you use to compress a video?
a)
Lossy
b)
Lossless
81.
What type of compression would you use to compress a text file?
a)
Lossy
b)
Lossless
82.
What is Lossless Compression?
a)
No information is lost but file size is increased
b)
There is no loss of information at all after compression
c)
Files which have the exact same data after compression
d)
Compression involves an algorithm
83.
What does Lossy Compression do to files?
a)
Increases the file size and keeps the same quality
b)
Eliminates no information at all
c)
Decreases the file size and keeps the same quality
d)
Eliminates unnecessary information in a file to reduce file size
84.

Add the binary numbers 0011 and 0001

a)

0100

b)

1001

c)

0110

d)

0010

85.

Add the binary numbers 01101101 and 11011011

a)

0101001000

b)

1010110111

c)

1101010101

d)

0110100101

86.

Doing a 2 bit left logical shift has what effect?

a)

Divides the number by 2

b)

Divides the number by 4

c)

Multiples the number by 2

d)

Multiplies the number by 4

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