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Question 1 of 10

1. Question
Which statement below best describes a Linear Search carried out on a sorted array?
- The last item is found and checked. If it is the searched for item then the search will stop. If not, the search will continue on the previous item. This is repeated until the entire array is read.
- The middle item is found and checked. If it is the searched for item then the search will stop. If not, the found item is compared with the searched for item. If the searched for item is smaller, the process is repeated in the first half of the array. If it is greater, the process is repeated in the second half of the array.
- The first item is found and checked. If it is the searched for item then the search will stop. If not, the search will continue on the next item. This is repeated until the entire array is read.
- The array is split into two halves. Each new array is split into two. This halving continues until all individual items are separated. Then, each item is read and compared to the searched for item until it is found.
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Question 2 of 10

2. Question
Which statement below best describes a Binary Search being carried out on a sorted array?
- The last item is found and checked. If it is the searched for item then the search will stop. If not, the search will continue on the previous item. This is repeated until the entire array is read.
- The middle item is found and checked. If it is the searched for item then the search will stop. If not, the found item is compared with the searched for item. If the searched for item is smaller, the process is repeated in the first half of the array. If it is greater, the process is repeated in the second half of the array.
- The first item is found and checked. If it is the searched for item then the search will stop. If not, the search will continue on the next item. This is repeated until the entire array is read.
- The array is split into two halves. Each new array is split into two. This halving continues until all individual items are separated. Then, each item is read and compared to the searched for item until it is found.
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Question 3 of 10

3. Question
Consider the array: arr=[4,6,7,11,10,12,15].
Why will a binary search fail to find the number 10?
- ...because a binary search only works on non-integer data types.
- ...because the array is not correctly defined.
- ...because a disadvantage of a binary search is that it can fail to find numbers which are also in the binary number system (ie 10 is also a binary number which has the denary value of '2' in binary)
- ...because binary searches rely on data sets being ordered.
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Question 4 of 10

4. Question
Consider the data set "cat", "dog", "gerbil", "hamster", "rabbit". How many steps will be required to find the item "rabbit", when using a 'linear search' algorithm? (if any non-integer values are calculated as part of the algorithm, the value will be rounded up to the nearest integer).
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Question 5 of 10

5. Question
Consider the data set "cat", "dog", "gerbil", "hamster", "rabbit". How many steps will be required to find the item "rabbit", when using a 'binary search' algorithm? (if any non-integer values are calculated as part of the algorithm, the value will be rounded up to the nearest integer).
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Question 6 of 10

6. Question
Which search algorithm is considered more efficient?
- Linear
- Binary
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Question 7 of 10

7. Question
Which search algorithm uses the principles of 'Divide and Conquer'?
- Linear
- Binary
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Question 8 of 10

8. Question
Which search algorithm is arguably far easier to program?
- Linear
- Binary
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Question 9 of 10

9. Question
Which type of search is described in this algorithm?
- Linear
- Binary
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Question 10 of 10

10. Question
Which type of search is described in this algorithm?
- Linear
- Binary
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