
Cryptography Concepts and Techniques

Interactive Video
•
Mathematics, History, Computers, Science
•
9th - 12th Grade
•
Hard

Mia Campbell
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the primary purpose of the scytale used by the Spartans?
To decode enemy messages
To encrypt messages using numbers
To create a complex mathematical code
To send secret messages by rearranging letters
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is encryption important in modern technology?
It speeds up data processing
It reduces the cost of data storage
It simplifies data management
It protects sensitive information from unauthorized access
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of cipher involves rearranging the positions of letters in a message?
Vigenère cipher
Substitution cipher
Transposition cipher
Caesar cipher
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a major weakness of substitution ciphers?
They leave the structure of the original text intact
They are too complex to use
They are only effective for short messages
They require a large key
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was Claude Shannon's contribution to cryptography?
He created the first digital cipher
He suggested alternating between substitution and transposition
He developed the Enigma machine
He invented the scytale
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a limitation of block ciphers?
They require a key as large as the message
They are easily cracked by frequency analysis
They can only encrypt small, fixed-size blocks of data
They are too slow for modern computers
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do stream ciphers differ from block ciphers?
They are based on transposition only
They require no key for decryption
They mix each bit with a random bit
They use a fixed-size block for encryption
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