Cryptography
Quiz
•
Computers
•
9th - 12th Grade
•
Practice Problem
•
Hard
Used 2+ times
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5 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the strategy employed by system architects to frustrate attackers and enhance computer security?
Encryption
Defence in depth
Substitution ciphers
Columnar transposition ciphers
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the biggest drawback of basic substitution ciphers?
They preserve letter frequencies
They are difficult to decode
They require a complex algorithm
They are easy to break
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the process called when text is made secret using a cipher?
Decryption
Encryption
Substitution
Permutation
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the name of the encryption technique that uses a series of substitutions and permutations based on the key value?
Caesar cipher
Data Encryption Standard
Advanced Encryption Standard
Diffie-Hellman Key Exchange
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What does the little padlock icon on a secure website indicate?
The server's public key
Symmetric encryption
Key exchange
Public key cryptography
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