Quiz 10C: Configure DNS Services

What is the primary function of DNS servers?

• File sharing

• Name resolution

• Email sending

• Printer management

Which port do DNS servers typically listen for queries on?

• TCP port 21

• UDP port 53

• TCP port 80

• UDP port 69

What is the purpose of setting a low TTL for DNS records?

• Reducing server load

• Increasing client latency

• Allowing quick updates

• Minimizing client connections

What type of DNS server holds editable zone records?

• Primary

• Secondary

• Tertiary

• Cache-only

What is the function of a secondary DNS server?

• Edit zone records

• Hold read-only copies of zones

• Perform recursive queries

• Maintain client caches

Which term refers to a DNS server that holds complete records for a domain?

• Authoritative

• Cache-only

• Recursive

• Secondary

What type of DNS server is used for caching but does not maintain a zone?

• Primary

• Secondary

• Cache-only

• Authoritative

What does DNS caching help to reduce?

• Server load

• Client latency

• Network bandwidth

• DNS queries

Which DNS server resolves queries for internal clients only?

• Primary

• Secondary

• Cache-only

• Internal

What is the purpose of external DNS zones?

• Serve internal clients

• Host private domains

• Serve external clients

• Host external clients