Programmers write software that controls hardware and interacts with users - Edexcel - GCSE Computer Science - Question 6 - 2018 - Paper 1
Question 6
Programmers write software that controls hardware and interacts with users. Some of this software ensures that networks function properly.
(a) Compilers and interpr... show full transcript
Worked Solution & Example Answer:Programmers write software that controls hardware and interacts with users - Edexcel - GCSE Computer Science - Question 6 - 2018 - Paper 1
Step 1
State four other features of a compiler.
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A single executable file is produced.
The executable program is portable between machines.
The program source code is not available.
Entire source code file is converted at once.
Step 2
Describe how a router directs data on the internet.
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Reads the data/packet to find the recipient's address.
Has physical connections to 2 or more different networks.
Maintains routing tables to find target addresses.
Keeps records of the next IP addresses.
Forwards data / directs forwards packets to the next node.
Step 3
Give the best case and worst case for a binary search algorithm.
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Best case: The target item is the middle/median of the list.
Worst case: The item is not in the list / located at the point at which the final division could lead to it.
Step 4
Discuss this statement.
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All of the items appear to be stored on one single device.
Software is abstracted over the physical devices at the user end.
Cloud storage does not show the actual devices and is seen as several services.
The files stored on the cloud could be resident in different locations.
Users interact with the cloud without the end user being aware or involved.
