Introduction to IT and Cybersecurity: Web Infrastructure

The video tutorial covers the fundamental building blocks of the Internet, including ISPs, NAPs, IP addresses, DNS, and URLs. It explains the structure and function of IP addresses, the role of DNS in mapping domain names to IP addresses, and the importance of protocols like HTTP and FTP. The tutorial also discusses the Internet's structure, including ISPs, NAPs, and the backbone, and introduces cloud service providers like AWS, Azure, and GCP.

What is the primary role of an ISP?

• To provide cloud storage services

• To connect users to the Internet

• To develop web applications

• To manufacture networking hardware

How many possible IP addresses are there in IPv4?

• Over 4 billion

• Over 1 million

• Over 10 billion

• Over 100 million

What does DNS stand for?

• Dynamic Name Source

• Domain Name System

• Digital Network Service

• Data Node Server

Which part of a URL indicates the protocol used?

• The subdomain

• The top-level domain

• The prefix (e.g., HTTP or HTTPS)

• The domain name

What is a cloud service provider?

• A company that offers Internet access

• A company that develops software applications

• A company that provides cloud-based services

• A company that manufactures routers

What is the function of a router?

• To provide cloud services

• To host websites

• To route information packets

• To store data

What is the main reason for the development of IPv6?

• To improve Internet speed

• To increase the number of available IP addresses

• To enhance security features

• To simplify network management

What is the backbone of the Internet typically made of?

• Satellite links

• Wireless signals

• Fiber optic lines

• Copper wires

What is the role of a DNS server?

• To manage network traffic

• To provide Internet access

• To resolve domain names to IP addresses

• To store website data

Which of the following is a major cloud service provider?

• LinkedIn

• Twitter

• Amazon Web Services

• Facebook