* DNS Configuration * Flashcards
What does DNS stand for?
Domain Name System
What is the primary purpose of DNS?
To translate human-readable domain names into computer-readable IP addresses.
What are gTLDs and give examples?
Generic top-level domains, such as .com, .org, and .net.
What are ccTLDs?
Country code top-level domains, like .us, .ca, and .uk.
What is an A record in DNS?
It defines the IPv4 address of a host.
What does an AAAA record define?
The IPv6 address of a host.
What is the function of an MX record in DNS?
It identifies the mail server for the domain.
What is the function of an MX record in DNS?
It identifies the mail server for the domain.
What are TXT records used for in DNS?
They store human-readable text and are often used for domain verification.
What does SPF stand for, and why is it important?
Sender Policy Framework; it prevents email spoofing by specifying authorized mail servers.
What is DKIM in email security?
DomainKeys Identified Mail, which validates the domain of outgoing emails.
What does DMARC stand for, and what does it do?
Domain-based Message Authentication, Reporting, and Conformance; it prevents email spoofing by enforcing SPF and DKIM.
What does DMARC stand for, and what does it do?
Domain-based Message Authentication, Reporting, and Conformance; it prevents email spoofing by enforcing SPF and DKIM.
What is an MX record in DNS used for?
It determines the host name for the mail server, not an IP address.
Can an MX record have multiple entries?
Yes, with different priority levels (lower values mean higher priority).
