Understanding Cryptography and Codes

What is a cipher?

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DOK Level 1: Recall

What does it mean to encrypt a message?

• To make a message longer

• To convert plain text into a cipher or code

• To write a message in a different language

• To send a message through the internet

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DOK Level 1: Recall

Which of the following is used to decrypt a cipher?

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DOK Level 1: Recall

How does a computer network function?

• By sending and receiving data between interconnected devices

• By encrypting messages

• By solving cryptograms

• By broadcasting radio signals

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DOK Level 2: Skill/Concept

Why is a key important in cryptography?

• It helps to write messages faster

• It is used to encrypt and decrypt messages

• It connects computers in a network

• It transmits radio signals

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DOK Level 2: Skill/Concept

What is the difference between plain text and cipher text?

• Plain text is readable, cipher text is not

• Plain text is longer than cipher text

• Plain text is used in radio, cipher text is not

• Plain text is a type of network, cipher text is not

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DOK Level 2: Skill/Concept

How might a computer break a code faster than a human?

• By using advanced algorithms and processing power

• By asking other computers for help

• By using radio signals

• By connecting to a network

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DOK Level 3: Strategic Thinking

What strategic steps would you take to solve a cryptogram?

• Guess random letters

• Look for common letter patterns and use logic

• Use a computer to solve it

• Ask a friend for the answer

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DOK Level 3: Strategic Thinking

In what ways can encryption be important for computer networks?

• It helps to make networks faster

• It secures data being sent and received

• It allows more devices to connect

• It improves radio signal quality

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DOK Level 3: Strategic Thinking

Which carries signals from radio, TV, call phones, and internet satellites?

• light waves

• sound waves

• radio waves