AQA A Level Computer Science - 4.5
Fundamentals of Data Representation
Exam 2024 Study Guide
Cryptanalysis - Answer>>A method of trying to find the plain
text from the cipher text without the decryption key.
Cryptography - Answer>>The science of designing cipher
systems.
Cipher text - Answer>>Message data after it has been
encrypted.
Decryption - Answer>>Using an algorithm and a key to convert
encrypted message data into its plain text equivalent.
Encryption - Answer>>Using an algorithm and a key to convert
message data into a form that is not understandable without that
key.
Plain text - Answer>>Message data before it is encrypted.
Pseudo-random numbers - Answer>>A series of numbers
generated by computer with apparent randomness.
Significant digits - Answer>>Those digits which carry meaning
contributing to the accuracy of a number. This includes all digits
except leading and trailing zeros where they serve merely as
placeholders to indicate the scale of the number.
Binary - Answer>>numbers in base 2 (0,1)
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