Quiz on Domain Name System (DNS)

What is the primary purpose of the Domain Name System (DNS)?

• To encrypt data

• To manage network traffic

• To store user data

• To provide a mapping from names to resources

Which of the following is NOT a top-level domain category?

• Organizational domains

• Geographical domains

• Reverse domains

• Functional domains

What does a domain name consist of?

• Only one component

• Two or more components separated by periods

• Only numbers

• Two or more components separated by commas

Which of the following is an example of a geographical domain?

• .edu

• .in

• .com

• .org

What is the function of the root DNS server?

• To manage local caches

• To direct queries to the appropriate DNS server

• To provide IP addresses for all domain names

• To store all DNS data

Which of the following is a characteristic of the DNS database?

• It has a limit on the number of queries

• It is only stored on one server

• It can be updated dynamically

• It is static and cannot be updated

What does the term 'loose coherency' refer to in DNS?

• Cached data expires according to a timeout

• All data is stored in one location

• Changes are replicated immediately

• The database is always consistent

Which of the following is a valid example of an organizational domain?

• www.company.gov

• www.university.edu

• www.nonprofit.org

• www.state.mil

What happens when a local DNS server cannot find an IP address?

• It forwards the request to the root DNS server

• It stops the query process

• It caches the request

• It returns an error message

Which protocol can DNS use for communication?

• HTTP only

• FTP only

• TCP or UDP

• SMTP only