World of Computer Networking Your CCNA start - Need for Domain Names

The video tutorial introduces the Domain Name System (DNS) and its importance in resolving domain names to IP addresses. It explains why domain names are necessary, highlighting three key reasons: hosts must communicate using IP addresses, public servers need to be easily accessible, and memorizing IP addresses is inconvenient. The tutorial also discusses the challenges of using IP addresses, such as their complexity and potential changes. Finally, it emphasizes the role of DNS in simplifying communication between hosts.

What does DNS stand for?

• Domain Name System

• Data Network Service

• Digital Name Server

• Dynamic Network System

Why is it necessary for hosts to communicate using IP addresses?

• Because it is defined in the TCP model

• Because IP addresses are shorter than domain names

• Because IP addresses are more secure

• Because IP addresses are easier to remember

What is one reason why domain names are preferred over IP addresses?

• Domain names change less frequently

• Domain names are easier to memorize

• Domain names are more secure

• Domain names are shorter

What challenge is associated with IP addresses that makes domain names more convenient?

• IP addresses can change

• IP addresses are not unique

• IP addresses are too short

• IP addresses are not secure

How do domain names simplify communication between hosts?

• By encrypting the communication between hosts

• By making it easier to remember and access servers

• By allowing hosts to communicate without IP addresses

• By providing a unique identifier for each host