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Outline the differences between how a compiler and an interpreter works, and explain the advantages and usage of of each [12 marks]

Compilers work by translating all the program code into source code (machine code) first, which is then ran by the computer. Alternatively, an interpreter works by reading and translating each line of code a...
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Answered by Russell P. • Computing tutor
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The numbers 6B and 12 are displayed in hexadecimal form. Convert them into binary form and perform binary addition to find the sum. Convert your answer back into hexadecimal. Show your workings.

The first step is to work out what 6B and 12 are in binary. Starting with 6B , we need to find a four-bit representation of both 6 and B. 6, converts straight to its binary form, simply by adding 1s to the 4...
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Answered by Ben C. • Computing tutor
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Explain why it is important to check the email address with JavaScript and again when it reaches the server.

It is important to check the email address with JavaScript first on the client-side because it is quicker than the server and you don't need to refresh any pages (assuming AJAX is not used). Additionally, it...
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Answered by Matthew B. • Computing tutor
10811 Views

Describe a difference between an array and a linked list.

An array has a fixed data size and cannot hold more elements than said size, whereas a linked list can hold different numbers of elements.
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Answered by Matthew B. • Computing tutor
2683 Views

One member of a chess club sends a text file saved in Unicode. What meant by the term "Unicode" and why might this be necessary?

Computers represent everything as binary numbers. For a computer, there is not much difference between a movie and a book - both of them are a long stream of binary digits. The difference is the way the user...
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Answered by Paul G. • Computing tutor
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