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Year 8 Data Rep &Algorithm TA-2
Contributed by: Swati
What is a Byte?
4 bits
1024 bits
1000 bits
8 bits
What is denary 55 in 8 bit binary?
11001100
00001101
11100110
00110111
What is denary 55 in hexadecimal?
3A
AA
58
37
what is the denary of 11001100?
Convert 110100101010 from binary to decimal.
3370
5430
1220
3020
Convert 68 from hexadecimal to unsigned binary.
11001100
00110011
001101000
01010101
Convert 2BB from hexadecimal to unsigned binary.
001010101010
001010111011
110011001100
001100110101
What is a bit?
10 KB
Binary Digit(0 or 1)
It is the name of a Dish
I don't know

1 2 4 8 16 finish up to 8 bits

32   64   256
34   68    128
34   68   256
32     64     128
(Remember 1000 bytes = 1KB)  Convert the following bytes in to kilobytes (KB).  32,000,000,000 bytes
What is computational thinking?
Giving instructions to a computer
Thinking like a computer - in binary
Using a set of techniques and approaches to help to solve problems
None of the above
Which of the following is NOT an example of computational thinking?
Planning how to beat your enemies in a video game level
Accidentally completing a video game level
Planning what to collect and where to exit to complete a video game level 
None of the above
Which computational thinking technique involves breaking a problem down into smaller parts?
Algorithm
Generalisation
Abstraction
Decomposition 
There are 3 pillars of computational thinking except 
Abstraction
Decomposition
Coding
Generalisation
Suppose we have the following sorted list of 10 items.
3,5,6,8,11,12,14,15,17,28
Which is the correct sequence of comparisons when finding the 8 using a binary search?(Hint: in case of even list go with the right element)
11,5,6,8
3,5,6,8
12,6,8
11,6,5,8
A list contains the names:
George, Jane, Miranda, Ahmed, Sophie, Bernie, Keith.
They are sorted using Insertion sort. What is the first name to be moved?
Miranda
Sophie
Jane
Ahmed
Using the same list as before:
George, Jane, Miranda, Ahmed, Sophie, Bernie, Keith.
How many names have to be moved altogether before the list is sorted?
3
5
6
1
"Performing a series of different set-up operations when the computer is switched on" Is an example of which of the following?
Selection
Variables
Iteration
Sequence
 "Deciding whether to use the DayTimeRate or EveningRate functions to calculate a customers fare",Is an example of which of the following.
Sorting
Sequence
Iteration
Selection
Which sorting algorithm may make multiple swaps per pass?
Insertion Sort
Bubble Sort
Selection Sort
Merge Sort
Which sorting algorithm shifts elements instead of swapping elements if needed in each pass
Merge Sort
Selection Sort
Insertion Sort
Bubble Sort
The following lists represent 3 passes of a sorting algorithm. Which algorithm is being used to sort the list?
 
4    5    9    6    2    7

4    5    6    2    7    9 
4    5    2    6    7    9
InsertionSort
Bubble Sort
Merge Sort
Bogo Sort
The following lists represent 3 passes of a sorting algorithm. Which algorithm is being used to sort the list?
 
4    8    6    2    5    7 
4    8    6    2    5    7 
4    6    8    2    5    7
Bubble Sort
Insertion Sort
Merge Sort
 We are sorting the following list in ascending order:
 
1    4    2    9    3    8    5
 
What does the list look like after one pass of the bubble sort algorithm
1 2 4 3 8 5 9
1 4 2 5 3 8 9
4 2 9 3 8 5 1
We are sorting the following list in ascending order:
 
1    4    2    9    3    8    5
4 2 9 3 8 5 1
4 1 2 9 3 8 5
1 4 2 9 3 8 5
C
A
B
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
A
B
C
D
B
C
D
A
Sort the following list using Bubble sort and write the position of numbers at the end of each pass.5 1 4 2 8 (Note: use single space to seperate numbers)
pass-1
pass-2
Sort the following list using insertion sort?
4 3 2 10 12 1 5 6 
(please list all steps)
Sort the following List using Merge Sort
38 27 43 3 9 82 10
38
?
38
?
38
?
38
?
27
?
3
?
3
?
27
?
27
?
27
?
27
?
27
?
38
?
9
?
10
?
43
?
38
?
43
?
43
?
43
?
3
?
3
?
43
?
43
?
3
?
3
?
3
?
27
?
9
?
38
?
9
?
9
?
9
?
9
?
9
?
82
?
82
?
82
?
10
?
43
?
82
?
82
?
10
?
10
?
10
?
82
?
82
?
10
?
10
?
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