DNS translates names to addresses in Intro to Computing - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does DNS stand for?

DNS stands for Domain Name System. It is like the phonebook of the internet that helps translate website names into IP addresses.

beginner

Why do we need DNS when we can use IP addresses directly?

IP addresses are hard to remember, like a long string of numbers. DNS lets us use easy-to-remember names like www.example.com instead.

beginner

Explain the DNS translation process using a real-world analogy.

Think of DNS as a phonebook: you look up a person's name (website name) to find their phone number (IP address). The computer asks the DNS server for the IP address linked to the website name.

beginner

What is the output of the DNS process?

The output is the IP address that corresponds to the website name. This IP address lets your computer connect to the right server on the internet.

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What happens if DNS cannot find the IP address for a website?

If DNS cannot find the IP address, your browser will show an error like 'Website not found' because it doesn't know where to connect.

What is the main role of DNS?

A Secure internet connections

B Store website content

C Translate website names into IP addresses

D Manage email delivery

DNS translates human-friendly website names into IP addresses that computers use to communicate.

Which of these is an example of a website name DNS translates?

A www.example.com

B 192.168.1.1

C 255.255.255.0

D 8080

www.example.com is a website name that DNS translates into an IP address.

If DNS fails to find an IP address, what will likely happen?

A The website loads normally

B The internet speed increases

C The computer restarts

D The browser shows an error

Without the IP address, the browser cannot connect and shows an error.

DNS is most similar to which real-world tool?

A A phonebook

B A clock

C A calculator

D A map

DNS works like a phonebook by matching names to numbers.

What does an IP address represent?

A A website's name

B A computer's unique address on the internet

C A password

D A file type

An IP address is a unique number that identifies a device on the internet.

Describe how DNS helps you visit a website using a simple analogy.

Think about how you find a phone number by a person's name.

Explain what happens step-by-step when you type a website name in your browser.

Focus on the role of DNS in this process.