Describe network protocols : Using Domain Name Servers

The video tutorial explains the Domain Name System (DNS), its purpose, and how it helps translate human-friendly domain names into IP addresses. It covers the history of DNS, its evolution from a central server to a distributed system, and the hierarchical structure of domain names. The tutorial also demonstrates how to query DNS in Java, highlighting the simplicity of using the API to retrieve IP addresses from domain names.

Why are domain name servers necessary for internet browsing?

• They provide internet security.

• They manage internet traffic.

• They store all web pages.

• They translate domain names to IP addresses.

What was a major reason for changing the domain name server structure to a distributed system?

• To reduce internet speed.

• To improve user interface design.

• To centralize data storage.

• To handle the increasing number of devices.

How are domain names structured?

• Alphabetically ordered.

• Based on geographical location.

• Hierarchically with top-level domains.

• Randomly assigned.

What is the purpose of having at least two servers for each domain?

• To reduce server costs.

• To provide faster internet speed.

• To ensure reliability and efficiency.

• To increase data storage capacity.

Which of the following is a top-level domain for educational institutions?

• .net

• .edu

• .com

• .org

What does the abbreviation FQDN stand for?

• Frequent Query Domain Name

• Fast Query Domain Network

• Fully Qualified Domain Name

• Full Quality Domain Name

In Java, how can you query the IP address for a domain name?

• By using a graphical user interface.

• By manually entering the IP address.

• By calling the static method getByName from the class NetAddress.

• By using a web browser.