Created: 2022-06-22
Tags: #literature
Abstract:
What is an IP Address
A way for us to communicate with devices on internet
without remembering complex numbers.
It's unconvenient to remember 104.26.10.299
We use DNS tryhackme.com instead
DNS isn't just for websites,
==Multiple types of DNS record exist==.
These are the common one
DNS records all come with a TTL value. Time value represented in seconds that should be saved for locally until you have to look it up again. Caching saves on having to make a DNS request every time you communicate with a server.
Parts of a DNS
TLD, Second Level Domain or Subdomain
Requesting a domain name
Machines don't understand human readable domain names, so they have to send a special request to a DNS resolver to translate the human languange into a machine readable IP Address for them.