How does the hierarchical structure of the DNS name space enhance its…
2025
How does the hierarchical structure of the DNS name space enhance its scalability and allow domain-level autonomy?
- A.
By assigning random numeric identifiers to domains to simplify resolution
- B.
By maintaining a flat list of domain names managed centrally
- C.
By structuring domain names in a hierarchy, enabling decentralised management of subdomains
- D.
By storing all domain data in a single server for faster access
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Correct answer: C
The Domain Name System (DNS) uses a hierarchical tree structure to manage the vast number of domain names on the internet. This design is crucial for scalability because it allows the responsibility of managing specific parts of the namespace to be distributed among different organizations. Instead of a single central authority maintaining every domain, each top-level domain (like.com or.org) is managed by a specific entity. This entity can then delegate authority for its subdomains to other administrators, creating a decentralized management model.