Understanding DNS Hierarchy Quiz

Which server is the final step in resolving a domain name to an IP address?

Authoritative nameserver

What is the role of the root nameserver in the DNS hierarchy?

It provides information about top-level domains (TLDs)

Which server can be compared to a specific rack of books in a library?

TLD nameserver

What is the primary difference between an authoritative nameserver and a recursive resolver?

The recursive resolver is at the beginning of a DNS query, and the authoritative nameserver is at the end Signup and view all the answers

Which server hosts the last portion of a hostname (e.g., 'com' in 'example.com')?

TLD nameserver Signup and view all the answers

Which server initiates the DNS query process on behalf of clients?

Recursive resolver Signup and view all the answers

Which of the following best describes the role of DNS in the Internet?

DNS is a directory service that translates domain names to IP addresses. Signup and view all the answers

Which component of the DNS system is responsible for translating domain names to IP addresses?

DNS servers Signup and view all the answers

What is the hierarchical structure of the DNS system?

Root servers → Top-level domain servers → Authoritative name servers Signup and view all the answers

What is the primary function of a DNS resolver?

To forward DNS queries to authoritative name servers Signup and view all the answers

Which type of DNS server is responsible for storing and managing the IP address mappings for a specific domain?

Authoritative name server Signup and view all the answers

What is the process called when a DNS client queries multiple DNS servers to resolve a domain name?

DNS recursion Signup and view all the answers

What is the main function of the root domain in the DNS hierarchy?

Provide information about top-level domains (TLDs) Signup and view all the answers

Which organization is responsible for managing the root domain in the DNS hierarchy?

ICANN Signup and view all the answers

What is the purpose of top-level domains (TLDs) in the DNS hierarchy?

Organize domain names based on their purpose or location Signup and view all the answers

Which organization is responsible for managing country-code TLDs (ccTLDs)?

National country code registries Signup and view all the answers

In the DNS hierarchy, what is the role of second-level domains?

Represent a specific entity or organization Signup and view all the answers

What is required before a domain name can be used for a website or online service?

Registration with a domain name registrar Signup and view all the answers

How can subdomains be used in websites?

Indicate a specific function or location Signup and view all the answers

Why are subdomains important in the DNS system?

Provide more granular control and organization of website content Signup and view all the answers

What type of records can be associated with subdomains in the DNS system?

A records, MX records, and CNAME records Signup and view all the answers

How does DNS caching contribute to the performance of the DNS system?

Improves speed by storing information temporarily Signup and view all the answers