DNS

What does DNS stand for?

• Domain Notification system

• Don't Name Servers

• Domain Name Server

• Domain Name System

Define DNS

• A server which stores networks.

• A server which stores just IP adressess.

• A server which stores just website domain names.

• A server which stores website domain names and their IP addresses.

What is the purpose of a DNS?

• It translates a website's domain name into its IP address.

• It gives you a domain name.

• It translates a website's IP address into its domain name.

• It transfers information from a computer to another server.

How does a DNS operate?

• When you type in a HTML, the SPI looks up the IP address, finds the matching domain name and sends it back.

• When you type in a URL, the ISP looks up the domain name, finds the matching IP address and sends it back.

• When you type in a URL, the ISP looks up the IP address, finds the matching domain name and sends it back.

• When you type in a HTML, the SPI looks up the domain name, finds the matching IP address and sends it back.

What 2 advantages does the system provide?

• It allows users to use the internet without remembering IP addresses.

• Its the easiest system to understand.

• It allows the correct servers to be contacted.

• It provides extra knowledge.

What are 2 disadvantages?

• Its slow.

• If a master server is broken, then it would be hard to access the webpage.

• Its easily damaged.

• Its popular among hackers.

Which diagram relates to DNS?

• 
• 
•