Where would you find a check digit?

Bar codes, Credit cards, Universal product code, A passport

What is the function of the run-time environment?

Allows the program to be run virtually within the IDE

What is a relational database?

Multiple databases, linked together by a common key field

Querying if two values are exactly equal to each other

What is concatenation?

The adding together of two strings

Returns the remainder after a division

What is terminal testing?

Tests carried out by real users

Half the list into single numbers than remerge them in order

What does input sanitisation do?

Modifies the input to ensure that it is valid

Why is Hexadecimal used by programmers?

It's an easier way to express large binary numbers

Why is program maintainability important?

So it is easy for other programmers to understand, So it is straightforward to edit at a later date

Why was an extra zero added to the original ACII code?

To create an 8-bit character set

What is a syntax error?

A typo/ grammatical error in a program, The terms/ symbols are not specific to the language used

Part of a program consisting of an identifier and a value, A value that can be changed while the program is running

What is an algorithm?

A step-by-step sequence of instructions that do something

What is the function of code editors?

Assists in writing source code, colour codes statements

A decision that defines the next step in an algorithm

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Computer Science Paper 2: Computer Harder

100 termsStudBud Administration479 plays

The second installment of the best computer science quizzes you'll ever see. But now, bigger and better!

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Questions 100

Answers

1
What type of sound is recorded by a microphone?
Real sound
Analogue sound
Live sound
Bad sound
2
Where would you find a check digit?
Bar codes
Credit cards
Universal product code
A passport
3
What happens if a binary value equals more than 255?
A Bottleneck Error
A Big Error
An Overflow Error
A Binary Error
4
What is 68MOD8?
1
8.5
8
4
5
What is the function of the run-time environment?
Will compile or interpret the final code as required
Assists in writing source code, colour codes statements
Helps to identify errors in lines of code
Allows the program to be run virtually within the IDE
6
What is a relational database?
A database without a primary key
Multiple databases, linked together by a common key field
A single database
A family of databases
7
Which of the following is NOT a High-Level language?
Java
C++
Assembly Language
Visual Basic
8
What is 1+1+1?
10
3
11
111
9
What does == mean?
Querying if two values are exactly equal to each other
Used to assign a variable
If a variable is equal to or greater than another
Querying if two values are not equal
10
How can you increase the quality of a sound file?
Play it better
Increase the sample rate
Increase the volume
Get better speakers
11
What is concatenation?
The conversion of one data type into another
A collection of alphanumeric data, characters and symbols
All numbers, including those with a decimal point
The adding together of two strings
12
What is 1F in denary?
25
31
15
475
13
Denary is a base ____ system
10
16
2
5
14
What does MOD do?
One value to the power of another
Divides but returns a whole number
Returns the remainder after a division
Multiplies a number by another
15
How is the quotient function represented as an arithmetic operator?
OR
DIV
*
MOD
16
Why are low level programming languages used?
To directly control hardware
So multiple programmers can work on the same code
They are easier to write
17
What is terminal testing?
A cycle of design, development and testing
Tests if the data is secure or vulnerable to attacks
Tests carried out by real users
Tests what impact the program would have on system resources
18
DO A MERGE SORT!
Halfing the cards compared to the middle value
Compare two values in a list then reorder them based on size
Constant comparisons and move the values based on size
Half the list into single numbers than remerge them in order
19
BoNuS QuEsTiOn!!! - who played Alan Turing in the 2014 film 'The Imitation Game'?
Benedict Cumberbatch
Build-a-bear Cabbagepatch
Buffalo Custardbath
Buttercup Cumbersnatch
20
BONUS QUESTIONS: What is the name of the computer in 'Hitchhiker's Guide to the Galaxy'?
Deep Thought
Christopher
Pan-dimensional, hyper-intelligent computer
Marvin
21
What does input sanitisation do?
Ensures all values are above 0
Modifies the input to ensure that it is valid
Checks if the input meets a set of criteria
Accepts the input
22
How would you write this logic diagram?
¬(A∩B)U(C∩D)
(A∩B)∩(CUD)
(¬A∩B)∩(CUD)
(¬AUB)U(C∩D)
23
How many characters can extended ASCII represent?
512
128
64
256
24
What can be included in an images metadata?
The date
The moon's phase
Their mother's maiden name
GPS location
25
What is larger, a Petabyte or a Terabyte?
Petabyte
They aren't real
What
Terabyte
26
What shape is a NOT gate?
Curved arrowhead
Triangle
Arrowhead
Semi-circle
27
Why is Hexadecimal used by programmers?
It has a cool name
It's an easier way to express large binary numbers
No one likes binary
It's the only value computers understand
28
Which is the odd one out?
Bubble Sort
Merge Sort
Linear Sort
Insertion Sort
29
Which of the following is NOT a translator?
Machine code
Interpreter
Assembler
Complier
30
What is this the sign for?
NOT
IF
OR
AND
31
Why is program maintainability important?
So it is easy for other programmers to understand
To protect data from security threats
To make the program run without errors
So it is straightforward to edit at a later date
32
How many colours are in an 8-bit image?
256
8
2
16
33
When programming, what are the key operations for basic file handling?
if, elif, else
+, -, *, /
for, while, next, end
open, read, write, close
34
Which is larger a bit or a nibble?
Nibble
They're the same
Bit
A nibble isn't real
35
What part of a computer control whether the current flowing through it is on or off?
Resistor
Transistor
Data Bus
Diode
36
Which of these is a constant?
area = pi * radius2
pi = 3.14
name = firstname + surname
length = input("How long is it? ")
37
What would the search Survey[0,2] return from the array shown?
Vans
9
6
5
38
Why was an extra zero added to the original ACII code?
So that everything looked nicer
To create an 8-bit character set
It wouldn't work without it
So that everything was more confusing
39
What is a syntax error?
A typo/ grammatical error in a program
An error in the structure or design of the program
A problem with the computer
The terms/ symbols are not specific to the language used
40
What is Q if A is 1 and B is 0
1
0
41
What is a variable?
A value that cannot change while the program is running
Part of a program consisting of an identifier and a value
Things to consider when writing a method
A value that can be changed while the program is running
42
Which of the following is NOT an example of defensive design?
Planning for contingencies
Including comments
Anticipating misuse
Requiring authentication
43
What is an algorithm?
An overly long list
A repetitive dance move
A step-by-step sequence of instructions that do something
A task repeated until a condition is met
44
What is the function of code editors?
Will compile or interpret the final code as required
Helps to identify errors in lines of code
Assists in writing source code, colour codes statements
Allows the program to be run virtually within the IDE
45
Which one is a type of compression?
Lossy compression
Losy compresion
Loosey compression
Laso compression
46
How can you represent an algorithm?
Code
Venn Diagrams
Predominance diagrams
Flowchart
47
Which file type is lossless
GIF
JPEG
TIFF
MP4
48
Using OCR naming conventions, which would be a suitable variable name?
FIRSTname
First_Name
firstname
firstName
49
Define Selection
Tasks that are repeated until a condition is met
Tasks carried out in the correct order
Choosing an answer
A decision that defines the next step in an algorithm
50
A logic gate outputs 1 whenever at least one of the inputs is 1, what logic gate is it?
OR
NOR
AND
NOT
51
What is 101 in binary
5
1100001
9
1100101
52
Are simple mistakes OK in pseudocode?
Yes, as computers won't interpret it and it's understandable
No, all mistakes are bad and should be punished
53
What's a linear search?
Halfing the list based on how the number compares to yours
Using a ruler to find a number
Breaking the list into smaller lists and searcing them
Comparing every value in a list to the value required
54
Which operator means not equal to?
!=
=
>=
==
55
A left shift of 4 does what to a binary number?
Multiplies the binary number by 4
Multiplies the binary number by 16
Divides the binary number by 16
Divides the binary number by 4
56
What does a diamond in a flowchart represent?
A process
A decision
A subroutine
An input/output
57
Which of the following is NOT a type of test data?
Normal Data
Erroneous (invalid) data
Extreme (boundary) data
Initial data
58
Which of the following is NOT an example of maintainability?
Sub-routines
Indentation
Iteration
Comments
59
What symbol connotes comments in python?
*
//
()
#
60
How many Kilobytes are there in a Megabyte?
10
None - A kilobyte is bigger than a Megabyte
1000
1024
61
What is 1 + 1?
11
10
1
2
62
What is a benefit of using an interpreter instead of a compiler?
It makes it easier to identify and correct errors
It's better
It can translate all of the code at once
It runs quicker
63
What flowchart symbol would be used to represent the print function?
Rectangle
Diamond
Parallelogram
Circle ended rectangle
64
What does a right shift of 2 do to a binary number?
Multiply the binary number by 2
Divide the binary number by 4
Divide the binary number 2
Divide the binary number by 8
65
What is this the truth table for?
Input1 ∩ Input2
Input1 ∩ ¬Input2
¬(Input1 ∩ Input2)
¬Input1 ∩ Input2
66
BONUS QUESTION - How many floppy disks would be needed to install windows 10?
2,778
1,750
2,373
1,713
67
What term is used for a count control loop?
for
while
if
when
68
What is a string?
All numbers, including those with a decimal point
A collection of alphanumeric data, characters and symbols
The conversion of one data type into another
The adding together of two strings
69
What is a flat-file database?
A database that is part of another database
A small database
A database with multiple tables
A database with only one table
70
Shifting a binary number 8 space to right would divide the number by what?
255
64
256
8
71
Which of these isn't an aspect of computational thinking?
Pattern Recognition
Abstraction
Decomposition
Realisation
72
What is pseudocode?
A shared programming language to plan and create a program
Code that's understood by a computer
Another name for python code
A fake name used by code to disguise itself
73
What does ∩ mean?
NAND
NOT
OR
AND
74
Which of the following refers to the data used by a sub-routine?
A parameter
An argument
A procedure
A function
75
What is the name of being able to identify patterns in data and build efficient algorithms?
Abstraction
Management figurisation
Data analysis
Pattern recognition
76
Which is the odd one out?
Algorithm
Sequence
Iteration
Selection
77
The phrase 'list of lists' is used to describe what type of array?
2 dimensional-array
A database
1 dimensional-array
3 dimensional-array
78
What is the arithmetic operator for divide?
÷
/
^
*
79
What does the term 'record' refer to in a database?
A table
A column of data
A row of data
A group of tables
80
What do boolean operators do?
Cut open and remove the organs of binary digits
Define relationships with boolean logic, between data values
Make a variable true or false
Do mathematical operations
81
What is the symbol for a subroutine in a flowchart?
A rounded rectangle
An oval
A rectangle with 2 lines at each end
A long hexagon
82
How do you do a binary sort?
Values are compared and swapped based on size
Comparing each value in a list, one at a time
Keep halving the list by comparing the middle number
Making any numbers that aren't yours 0
83
Multiply a binary number by 16 would require a left shift of what?
4
8
16
2
84
What is casting?
The conversion of one data type into another
The adding together of two strings
A collection of alphanumeric data, characters and symbols
All numbers, including those with a decimal point
85
What does ASCII stand for?
American Standard Code For Information Interchange
Ah So Clare Is Intelligent
All Stand Confidently It's Illegal
Awesomely Scared Cats In Iceland
86
What does input validation do?
Modifies the input to ensure that it is valid
Checks if the input meets a set of criteria
Ensures all values are above 0
Accepts the input
87
What can be used to reduce large file sizes?
Sit on it
Data compression
A big hammer
Squish it
88
What is iterative testing?
Tests what impact the program would have on system resources
Tests carried out by real users
A cycle of design, development and testing
Tests if the data is secure or vulnerable to attacks
89
How many colours are in a 2-bit image?
4
2
None
1
90
In a table, what is a unique field with non-repeatable content called?
A common key field
A primary key
A field
A record
91
What is 28DIV5
4
3
5.6
5
92
Why was Unicode developed?
To unify the world
To make it so there is only one type of code
It wasn't
To set worldwide common coding standard
93
Which type of compression removes data?
Lossless compression
Lossy compression
94
What is the symbol for an OR gate?
U
O
¬
∩
95
Why is decomposition useful in writing algorithms?
It makes the code shorter
It simplifies the main task into smaller manageable tasks
It reduces the number of errors
It makes the algorithm more complicated
96
Which search is slower for larger files - binary or linear?
Binary Search as it has to check every number
Linear search as it has to check every number
97
What is the function of error diagnostics?
Helps to identify errors in lines of code
Assists in writing source code, colour codes statements
Will compile or interpret the final code as required
Allows the program to be run virtually within the IDE
98
Which of the following refers to the variables within a sub-routine?
A parameter
A function
An argument
A procedure
99
Which of the following is a type of sub-routine which returns a value?
A procedure
An argument
A function
A parameter
100
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Of course
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Most definitely
Yes

Computer Science Paper 2: Computer Harder Flashcards | StudBud