Computer Security and HTML Basics

These flashcards cover key concepts related to password security, HTML basics, network types, digital image fundamentals, and more.

What is the main difference in combinations between a 3-digit and a 4-digit lock?

A 3-digit lock has 1,000 combinations, while a 4-digit lock has 10,000 combinations.

How long would it take to crack a 3-digit lock if each attempt takes 2 seconds?

It would take 2,000 seconds or 33.33 minutes.

What are the three main principles for a strong password?

Unique, hard to guess, and easy to remember.

Name two ways to make a password hard to guess.

Increasing the length of the password and using a mix of symbols (lowercase, uppercase, digits, and special characters).

What is Multi-Factor Authentication (MFA)?

A security system that requires more than one method of authentication from independent categories of credentials.

What are the three authentication factors in MFA?

Something you know (password or PIN), something you have (smart card or token), and something you are (biometric factors).

What does the

tag do in HTML?

It defines a paragraph.

What is the difference between absolute and relative hyperlinks?

Absolute hyperlinks point to a resource on another website, while relative hyperlinks point to a resource on the current website.

How do you convert Hexadecimal to Decimal?

Multiply each digit by 16 raised to its position from the right and sum the results.

How many bits are there in a byte?

There are 8 bits in a byte.

What is the purpose of a Network Type that is decentralized?

In a decentralized network, many clients connect to routers that connect to each other.

Why was IPv6 developed?

IPv6 was developed to provide a vastly larger address space as IPv4 was insufficient for all global devices.

What is a VPN?

A Virtual Private Network creates an encrypted connection over the internet.

What is the difference between raster and vector images?

Raster images are made of pixels and are resolution-dependent, while vector images are defined by mathematical equations and are resolution-independent.

What causes pixelation in images?

Pixelation occurs when a low-resolution raster image is enlarged beyond its original dimensions.

What is a color profile?

A color profile ensures colors appear consistently across different devices.

What is the main difference between PNG and JPEG formats?

PNG uses lossless compression and supports transparency, while JPEG uses lossy compression and does not support transparency.