Choose the two correct facts about Huffman coding

Huffman coding can be used for text, image, and video compression, Huffman coding is lossless

The data is kept..., ...when the power is switched off

Which of the options below are advantages of relational databases?

Easier to update data, Better for security

A foreign key in a table inside a relational database is...

The primary key from another table, A column in a table

Which of these describes a hard drive?

It is an example of secondary storage, It can store the operating system

What does the Fetch stage do?

An instruction is taken from the memory

Choose the correct fact about lossless compression

The compressed file will be only a bit smaller than the original one

Which of these are an advantage of merge sort?

It's more efficient, It's faster

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Year 10 - Mar 22 quiz

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Questions 92

Answers

1
The truth table for which logic gate is being shown below?
XOR
OR
AND
NOT
2
An IF-statement is an example of...
None of the above
Selection
Sequence
Iteration
3
The symbol for string concatenation in Python is...
""
=
+
>
4
All computer systems follow this sequence:
Process --> Input --> Output
Input --> Process --> Output
Input --> Output --> Process
Output --> Process --> Input
5
What's the name of this logic gate?
XOR
OR
AND
NOT
6
Which of these is an application software?
Encryption
Operating system
Compression
Game
7
How many items do you compare in a bubble sort at any one time?
As many as you can
4
2
3
8
Choose the two correct facts about Huffman coding
Huffman coding is lossy
Huffman coding can be used for text, image, and video compression
Huffman coding is lossless
Huffman coding is only used on text
9
How many bits in a byte?
8
4
16
2
10
Non-volatile means:
The data is kept...
...when the power is switched on
...when the power is switched off
The data is lost...
11
Which field below is an example of a foreign key?
studentID
grade
name
personID
12
What's the RLE for this binary data? : 0000 0111 1100
(5, 0) (5, 1) (5, 0)
(5, 1) (5, 1) (5, 0)
(5, 0) (5, 1) (2, 0)
(5, 0) (5, 1) (5, 1)
13
To multiply a binary number by 8, you perform a...
3 place right binary shift
2 place right binary shift
3 place left binary shift
8 place right binary shift
14
Using binary search, how many comparisons would be made to find 77 in this list: 77, 99, 101
1
4
2
3
15
In Python, the length of a string can be found using the len() function
True
False
16
Which of these logic gates will have an output of 1 if either of the inputs are 1?
AND
XOR
OR
NOT
17
A 4 place left binary shift is the same as...
Multiplying by 16
Multiplying by 8
Dividing by 16
Multiplying by 4
18
What does the Decode stage do?
The instruction is translated
The instruction is carried out
An instruction is taken from the memory
19
Which of the options below are advantages of relational databases?
None of the above
Easier to update data
Uses more storage
Better for security
20
A foreign key in a table inside a relational database is...
A record
The primary key from another table
A column in a table
The foreign key from another table
21
Which type of secondary storage uses servers in a remote location?
Cloud
Optical
Solid State
Magnetic
22
A general-purpose computer can perform many tasks
True
False
23
Which of these is a substring of the string "United Kingdom"?
d K
unit
UK
King
24
Which of these describes a hard drive?
It is an example of secondary storage
It can store the operating system
It's the only example of secondary storage
It is an example of primary storage
25
What does the Fetch stage do?
The instruction is carried out
The instruction is translated
An instruction is taken from the memory
26
Which two units of data storage are the most common for hard drives?
PB (petabyte)
KB (kilobyte)
GB (gigabyte)
TB (terabyte)
27
Which of these logic gates has 1 input?
NOT
OR
AND
XOR
28
Sound is intially recorded using an __________ signal
Analogue
Digital
29
What is range() in Python?
A datatype
A constant
A function
A program
30
Which component transports data around the CPU?
Control Unit
Bus
Cache
Registers
31
Choose the correct fact about lossless compression
It removes data
The compressed file will be only a bit smaller than the original one
It can't be used for sending an email
An example of it is an MP3 file
32
Cloud storage requires a constant Internet connection
False
True
33
A relational database uses multiple tables while a flat-file database uses just one table.
False
True
34
Which of these is not an embedded system?
Smartwatch
Microwave
Games console
Headphones
35
The ALU performs only mathematical operations
False
True
36
Application and system software both allow users to perform a task
True
False
37
Which of these will have an output of 1 if both inputs are 1?
AND
XOR
OR
NOT
38
Which type of secondary storage has really fast read/write speeds?
Solid State
Optical
Magnetic
Cloud
39
What does the Execute stage do?
The instruction is translated
An instruction is taken from the memory
The instruction is carried out
40
Which of these is an operating system?
Google
Chrome
iOS
Windows
41
What do you need to do to sample an analogue file more often?
Increase the sample rate
Increase the sample resolution
Increase the length of the sample
Decrease the sample rate
42
Which of these are an advantage of merge sort?
It requires less memory
It's more efficient
It's faster
It's easier to code
43
RLE is an example of...
Lossless compression
Lossy compression
44
How many records are there in the table below?
5
1
3
7
45
The cache has a smaller storage size than the RAM
True
False
46
Image size is calculated by doing...
width * height
width + height
width / height
width * depth
47
XOR means "The output = 1 if either input = 1 but not both"
False
True
48
Name the two types of compression
Lossy
Lossed
Lost
Lossless
49
Volatile means that the component doesn't need power to store data
False
True
50
Which component manages the CPU overall?
Cache
ALU
Clock
Control Unit
51
The initials of the components inside the CPU spell out...
CAR
ARB
CRB
CARB
52
Which of these are components inside the CPU?
Cache
GPU
RAM
ALU
53
name <-- "Thomas" .What is the length of the variable name?
5
0
6
4
54
How do you convert from KB (kilobytes) to GB (gigabytes)
Multiply by 1,000,000
Divide by 1000
Multiply by 1000
Divide by 1,000,000
55
Which of these is an example of an embedded system?
iPad
Laptop
Phone
Dishwasher
56
Which type of secondary storage uses disks split into 'sectors'?
Optical
Cloud
Magnetic
Solid State
57
Select the correct disadvantage of lossy compression
It's not a reversible process
It can only be used for sound files
It won't reduce the file size
It can keep all the data from the original file
58
Which of these can the ALU perform?
Binary shifts
Addition
Logical operations
Subtraction
59
Which of these describes the CPU?
It isn't that important in a computer
It is volatile
It stores all data and programs
It handles all the processing
60
The truth table for which logic gate is being shown below?
NOT
AND
XOR
OR
61
"This component is non-volatile". What can be described like this?
ROM
Hard drive
RAM
CPU
62
Primary and secondary storage have the same read/write speeds
False
True
63
Perform an RLE on the following string: ttttaaavoo
(3,t)(4,a)(1,v)(1,o)
4t3a1v3o
(4,t)(3,a)(1,v)(2,o)
(4,t)(4,a)(1,v)(2,o)
64
Which of these is true about embedded systems?
They can only be found in household appliances
They are computers built into other devices
They can perform many tasks
They usually perform one task
65
(A . B) + C means...
(A OR B) OR C
(A AND B) NOT C
(A OR B) AND C
(A AND B) OR C
66
Using linear search, how many items would be checked if you need to find 24 in this list: 12, 22, 24, 33, 11, 56
1
6
4
3
67
Performing RLE on binary data will always save a lot of storage space
True
False
68
Which of these is true about secondary storage?
They all have moving parts
The CPU doesn't access it directly
They are non-volatile
The CPU directly accesses it
69
A primary key cannot identify a unique record
True
False
70
Which type of compression will have a smaller file size?
Lossy
Lossless
71
1 + 1 + 1 in binary equals?
111
10
100
11
72
How many fields are there in the table below?
4
1
3
0
73
Which of these statements about searching algorithms is true?
Linear search can't be used on any type of list
For small ordered lists, binary and linear search have similar efficiency
Linear search is simpler
For large ordered lists, binary and linear search have similar efficiency
74
The CPU follows which type of architecture?
Harvard
Von Newman
Neumann
Von Neumann
75
FDE Cycle means...
Find-Decode-Execute
Find-Delete-Execute
Fetch-Delete-Execute
Fetch-Decode-Execute
76
The length of a string is...
the number of words it has
the number of characters it has
always greater than 0
always greater than or equal to 0
77
The formula for a sound file size is...
sample rate + sample resolution
sample rate x sample resolution x length
sample rate x sample resolution
sample rate x sample resolution x length x depth
78
Which component transmits an electronic signal that synchronises all the components?
Clock
ALU
Control unit
Cache
79
Which logic gates appear in this logic circuit?
OR
XOR
NOT
AND
80
Which of these are a disadvantage of merge sort?
It's inefficient
It's trickier to code
It only works on numbers
It requires more memory
81
Which of these describes the ROM?
It stores the BIOS
We can change the data stored inside it
It's slower to read from than a hard drive
It handles graphics
82
Linear search can be done on unordered lists
True
False
83
Which of these is a type of utility software?
Defragmentation
Browser
Disk clean-up
Game
84
String Concatenation means...
removing characters from a string
splitting a string in half
joining two or more strings together
joining two strings together
85
Which type of primary storage is non-volatile?
RAM
Registers
ROM
Cache
86
What's the name of this logic gate?
XOR
OR
NOT
AND
87
Which type of secondary storage uses a laser to read/write data?
Cloud
Optical
Magnetic
Solid State
88
Which of these are an advantage of bubble sort?
It's faster
It requires less memory
It's simpler to code
It requires more memory
89
Any variable followed with square brackets [] is a...
Function
None of the above
Constant
List
90
Which of these describes RAM?
It can only store data if it is powered on
It is fast to read and write data to
It stores the start-up instructions for the computer system
It is non-volatile
91
Which two types of secondary storage are the most expensive?
Optical
Solid State
Cloud
Magnetic
92
The number of samples per second can be measured in...
Hertz (Hz)
Megahertz (MHz)
Kilohertz (KHz)
All of the above

Year 10 - Mar 22 quiz Flashcards | StudBud