Encryption (OCR GCSE Computer Science): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What is encryption?
What is encryption?
Converting data to a coded form
What type of information does encryption protect?
What type of information does encryption protect?
Passwords and financial details
What is needed to decrypt encrypted data?
What is needed to decrypt encrypted data?
The correct key
Why is intercepted encrypted data still secure?
Why is intercepted encrypted data still secure?
Cannot be understood without correct key
Which activity commonly uses encryption?
Which activity commonly uses encryption?
Online banking
In a Caesar cipher, what does shifting 'A' by 3 produce?
In a Caesar cipher, what does shifting 'A' by 3 produce?
D
What key characteristic defines symmetric encryption?
What key characteristic defines symmetric encryption?
Same key for encryption and decryption
What is an advantage of symmetric encryption?
What is an advantage of symmetric encryption?
It is faster
How many keys does asymmetric encryption use?
How many keys does asymmetric encryption use?
Two keys
Why is asymmetric encryption more secure?
Why is asymmetric encryption more secure?
Only private key holder can decrypt
How does WEP compare to WPA for Wi-Fi security?
How does WEP compare to WPA for Wi-Fi security?
WEP is older and less secure