Understanding DNS

What is the main purpose of the Internet?

• To store personal data

• To send digital information between computers

• To play online games

• To watch movies

Why are IP addresses not user-friendly?

• They are case-sensitive

• They change frequently

• They are difficult to remember

• They are too long

What does DNS stand for?

• Data Navigation System

• Digital Network Service

• Domain Name System

• Domain Network Service

How does DNS help users?

• By providing internet speed

• By translating domain names to IP addresses

• By blocking unwanted websites

• By storing passwords

What is the first step in the DNS process?

• Contacting the root server

• Loading the webpage

• Checking the cache

• Finding the IP address

What is the role of a root server in DNS?

• To store information about top-level domains

• To store all IP addresses

• To block malicious websites

• To provide internet speed

What does a top-level domain server store?

• Information about second-level domains

• Internet speed data

• All IP addresses

• User passwords

What is an example of a subdomain?

• com

• example.com

• www

• mail.example.com

Why is DNS hierarchy important?

• It makes the system scalable and efficient

• It blocks unwanted websites

• It stores user data

• It increases internet speed

What is the main takeaway about DNS?

• It blocks malicious websites

• It provides internet speed

• It stores all internet data

• It maps human-readable domain names to IP addresses