Data Representation, Programming (Python), and Cyber Security

What is the difference between lossy and lossless compression?

• Lossy compression retains all data, while lossless compression loses some data.

• Lossy compression loses some data (e.g., JPEG), while lossless compression retains all data (e.g., ZIP).

• Lossy compression is used for text files, while lossless compression is used for images.

• Lossy compression is faster than lossless compression, but less efficient.

What is sequencing?

• When a code runs in order.

• When a code runs randomly.

• When a code runs in reverse order.

• When a code runs simultaneously.

What is ransomware in terms of malware?

• A virus that locks data and asks for money

• A type of malware that steals personal information

• A software that protects against viruses

• A program that speeds up computer performance

What is pretexting?

• Pretending to be someone to get information

• A method of data encryption

• A type of phishing attack

• A legal form of identity verification

What is an antivirus?

• It is a type of software that detects and removes viruses

• It is a hardware device that protects against malware

• It is a type of software that speeds up computer performance

• It is a program that manages network traffic

What is ASCII?

• ASCII is a way for computers to turn letters and symbols into numbers, so they can understand and store text.

• ASCII is a programming language used for web development.

• ASCII is a type of computer virus that affects text files.

• ASCII is a graphic design software used for creating images.

What is the syntax to print 'Hello, world!' in Python?

• echo 'Hello, world!'

• print('Hello, world!')

• printf('Hello, world!')

• write('Hello, world!')

What is phishing?

• A method of securing data through encryption.

• A type of social engineering that involves fake emails to steal data.

• A technique used to improve email deliverability.

• A software used for data recovery.

What is 1 kilobyte (KB) in bytes?

• 512 bytes

• 1024 bytes

• 2048 bytes

• 256 bytes

What is two-factor authentication (2FA)?

• 2FA is an extra layer of login security.

• 2FA is a method to reset your password.

• 2FA is a type of encryption for data.

• 2FA is a software for managing passwords.