BITCOIN IMP

You tested your project with students of different ages. Statement 1: Younger users needed more help than older users. Statement 2: All users interacted with the tool in exactly the same way.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You asked classmates to use your tool. Statement 1: Collecting feedback from others is part of evaluating success. Statement 2: You can evaluate your tool without involving users.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

Can you change a smart contract after it runs? Statement 1: Smart contracts can’t be changed once they start working.

• True

• False

You tested your tool with users who speak different languages. Statement 1: Users who didn’t speak the tool’s main language needed extra help. Statement 2: Supporting more languages could improve the tool.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You gave a survey to 50 users. Statement 1: 45 users said the tool was helpful. Statement 2: A high number of positive responses suggests a useful tool.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You are writing smart contract conditions. Statement 1: IF a player enters five codes → unlock door. Statement 2: IF someone enters a wrong code → unlock door.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You are designing a payment system with digital coins. Statement 1: Each user should have a public and private key. Statement 2: Everyone should share one password.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You are comparing how we hide and check messages. Statement 1: Encryption keeps messages private. Statement 2: Signatures prove the message came from you.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You are reviewing the word “hash.” Statement 1: A hash turns a message into a short, random number. Statement 2: If the message changes, the hash will change.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false

You are testing if a message was really from your friend. Statement 1: A fake signature always works if you have the message. Statement 2: A real signature only works with the real private key.

• Only Statement 1 is true

• Only Statement 2 is true

• Both are true

• Both are false