DNS Query Quiz

Which type of DNS query involves the client making all requests to each server individually?

• A) Recursive

• B) Iterative

• C) Distributed

• D) Cached

What is the purpose of the root servers in the DNS hierarchy?

• A) To provide local DNS caching

• B) To manage country codes

• C) To direct requests to the correct top-level domain servers

• D) To handle only recursive queries

What does TTL (Time to Live) represent in DNS caching?

• A) How long a DNS server stays active

• B) The time before a cache entry expires and must be revalidated

• C) The frequency of DNS queries

• D) The time for the DNS server to respond

In a forward lookup, the DNS server translates a:

• A) IP address to a domain name

• B) Domain name to an IP address

• C) TLD to a root server

• D) Server location to an IP address

What would be the result of setting a long TTL for DNS cache entries?

• A) The DNS cache will update frequently

• B) The cache may contain outdated information for longer periods

• C) Users will have faster access to new IP addresses

• D) Local DNS queries will fail more often

Which statement is true about an authoritative DNS response?

• A) It always comes from the local DNS cache

• B) It comes directly from the DNS server’s original source files

• C) It is always received from a third-party DNS provider

• D) It comes only from a recursive query

What might cause a non-authoritative DNS response?

• A) The TTL has expired

• B) The answer came from the server’s cache

• C) The DNS server was overloaded

• D) The query used an iterative process

In a DNS query process, what is the role of a resolver?

• A) To manage TLD servers

• B) To translate IP addresses to domain names

• C) To initiate the DNS query and handle responses

• D) To connect the local server with Google DNS

Which of the following best describes a recursive DNS query?

• A) The client resolves each DNS step individually

• B) A single server handles the query and responses

• C) All results are stored on the root server

• D) It uses only country code TLDs

Which DNS service is likely to be authoritative for local internal addresses?

• Quad9

• Google DNS

• The organization’s internal DNS server

• Cloudflare