Question: The Domain Name System (DNS) is maintained by _______
a) distributed database system
b) a single server
c) a single computer
d) none of the mentioned

Answer: a) distributed database system

The Domain Name System (DNS) is a crucial component of the internet, acting as a distributed database system that translates human-friendly domain names (like www.example.com) into IP addresses (like 192.0.2.1) that computers use to identify each other on the network. This decentralized approach allows for a more resilient and scalable system, as no single server is responsible for maintaining the entire database of domain names.

Here are some key points about DNS:

Decentralization: Unlike a single server that can become a point of failure, the distributed nature of DNS means that many servers across the globe hold portions of the database. This ensures higher availability and redundancy. 🌍
Scalability: As the number of websites and users grows, the DNS can scale by distributing the load across various servers, making it efficient for handling requests. 📈
Hierarchical Structure: DNS operates in a hierarchical structure with different levels, such as top-level domains (TLDs) like .com, .org, and country codes (like .uk). Each level is managed independently, allowing for organized management of domain names. 🔗
Caching: DNS servers cache responses to speed up future requests, reducing the time it takes to resolve domain names for users. ⏱️

Overall, the DNS is a foundational technology that enables seamless internet navigation, making it essential for both users and web services