NEW
Font size
WorksheetsCompTIA Tech+: 2.3.1 - Encryption Basics
Total questions: 10
Worksheet time: 5mins
What is the purpose of encryption?
To delete sensitive data permanently
To make data accessible to everyone
To store data in a compressed format
To transform readable data into unreadable ciphertext
Who is credited with using the Caesar cipher for military communication?
Genghis Khan
Napoleon Bonaparte
Julius Caesar
Alexander the Great
What does the Caesar cipher do to letters in the alphabet?
It replaces them with numbers
It shifts them a certain number of spaces
It reverses the order of the letters
It removes vowels from the text
What is the key to decoding encrypted material?
A random number generator
A secret phrase
An encryption algorithm
A password
If the Caesar cipher shifts letters 3 spaces to the right, what does the plaintext 'COMPTIA' become?
GQOTXME
FRPSWLD
DPNQUJB
ZLJQPHX
What is the most common type of encryption used today?
64-bit encryption
256-bit encryption
128-bit encryption
512-bit encryption
Why are modern encryption methods considered unbreakable?
They are written in ancient languages
They are stored in physical vaults
They rely on complex mathematical algorithms
They use random letters and numbers
What role do computers play in modern encryption?
They generate encryption keys using complex algorithms
They store encrypted messages in databases
They translate encrypted messages into multiple languages
They delete encrypted messages after use
What is the mathematical representation of 128-bit encryption?
128 factorial
10 to the 128th power
2 to the 128th power
2 to the 64th power
How does modern encryption prevent unauthorized access to data?
By hiding data in physical locations
By deleting unauthorized data
By converting raw data into unreadable forms
By using passwords only
