Hosting Domain & DNS Management

Question 1

What does DNS stand for in web hosting?

Accepted Answer

Domain Name System

Answer

DNS (Domain Name System) is the internet's directory that translates human-readable domain names like example.com into IP addresses that computers use to locate servers.

Question 2

What is an 'A record' in DNS?

Accepted Answer

A record that maps a domain name to an IPv4 address

Answer

An A record is a DNS record type that maps a domain name or subdomain to a specific IPv4 address, directing web traffic to the correct server.

Question 3

What is a 'CNAME record' used for in DNS?

Accepted Answer

Creating an alias that points one domain name to another domain name

Answer

A CNAME (Canonical Name) record creates an alias pointing one subdomain to another domain name, commonly used to point www.example.com to example.com.

Question 4

What is TTL in DNS and why does it matter for hosting migrations?

Accepted Answer

Time To Live — the duration in seconds that DNS resolvers cache a record before checking for updates

Answer

TTL (Time To Live) specifies how long DNS resolvers cache a record; lowering TTL before a server migration ensures faster propagation of IP address changes to new hosting.

Question 5

What is the purpose of an 'MX record' in DNS for a hosting account?

Accepted Answer

It specifies which mail servers handle incoming email for your domain

Answer

MX (Mail Exchanger) records specify which email servers are responsible for receiving incoming email messages for a domain, with priority numbers determining the order.

Hosting Practice Test

Hosting Practice Test

Hosting Domain & DNS Management