Progress Check 1

The application of each step of an algorithm in the order in which the code statements are given

• Sequential

• Iterative

• Selective

• Efficient

_determines which parts of an algorithm are executed based on a condition being true or false.

• Selection

• Iteration

• Sequence

• Linear

_ is a repeating portion of an algorithm.

• Iteration

• Selection

• Linear

• Binary

The process of decoding the data

• encryption

• decryption

• solution

• data process

The process of encoding the data to prevent unauthorized access

• encryption

• decryption

• description

• security

What does Encryption Mean?

• That data can no longer be read without the key

• That data is secure

• That data has been lost

• That data is changed

Consider the process of encoding and decoding a message using the following Caesar cipher encoding scheme in which the plaintext and ciphertext alphabets are offset by four positions, as shown above.

Which of the following encoded ciphertext strings decodes to an original plaintext message of “secret”?

• ersecr

• wigvix

• kwujwl

• oaynap

What must a user need to decrypt a file?

• Coin

• Key

• Token

• Graph

Finite set of instructions that accomplish a task

• algorithm

• program

• Python

• Program manager

Why is iteration important?

• It determines the order in which instructions are carried out
• It allows code to be simplified by removing duplicated steps
• It allows multiple paths through a program
• It ensures the code works correctly