Quiz on Domain Name System (DNS)

Which DNS record specifies the mail servers accepting incoming mail for a domain?

• A Record

• MX Record

• CNAME Record

• PTR Record

Which DNS record allows multiple DNS records to map to the same IP address?

• A Record

• CNAME Record

• MX Record

• PTR Record

How many root server addresses are there globally?

• 10

• 12

• 13

• 15

What is the role of DNS in internet usage?

• To restrict access to websites

• To enable access to websites, services, and resources

• To increase internet traffic

• To manage user data

What is the purpose of PTR Records in DNS?

• To map domain names to IP addresses

• To validate the relationship between a domain and an IP address

• To store email server information

• To manage network traffic

What does DNS stand for?

• Domain Name System

• Digital Network System

• Data Name Service

• Domain Network Service

What does the detailed overview of the DNS query process show?

• How DNS records are encrypted

• How DNS resolution involves multiple servers and steps

• How DNS records are deleted

• How DNS servers are located

What is the first step in query resolution in DNS caching?

• Checking the recursive DNS server

• Checking the local DNS cache

• Sending a request to the root server

• Retrieving data from the authoritative server

What is DNS Spoofing also known as?

• DNS Cache Poisoning

• DNS Security Extensions

• DNS Encryption

• DNS Filtering

What is the purpose of DNSSec?

• To add layers of authentication and validation to DNS responses

• To encrypt DNS data

• To block DNS queries

• To speed up DNS queries