The Internet Flashcards
Dns refreshing
When ur registrar creates or updates any info for a given domain, the info must be refreshed in every dns database.
Top level DNS servers function
DNS worldwide refer to this few special servers called “authorartive name server”
Get a domain name (4)
The registrar will let u know when the domain name is properly registered. All dns will have received your dns info.
Get a domain name (3)
Fill out the form, don’t misspell
Get a domain name (2)
Click on the prominent “GET A DOMAIN NAME” call to action
Get a domain name (1)
Go to registrar website
Can u buy a domain name
Can’t own a domain name but u can but it’s right and renew it every 1-2 years.
How many labels can domain have? Example of a sub domain?
Domain can have many labels
Sub domains - (mozilla.org)(developer.mozilla.org)
Label 1
Right before the TLD
Also called SLD (secondary level domain)
Label rules
Case sensitive
Character sequence from 1-63 long
A-Z, 0-9, and (-) character can’t be first or last
TLD rules
can contain special and Latin characters. Max 63 characters.
Most are 2-3
.edu
The .edu TLD is for educational and academic institutions
.gov
TLDs containing (.gov) are only allowed to be used by government departments
Local TLDs
(.us, .fr, .se) can require the service to be provided in a given language or hosted in a certain country.
Most TLDs
.com, .org, .net
TLD definition
Tells the user the general purpose of the service behind the domain name.
TLD
Top Level Domain
Domain name structure: developer.mozilla.org
Label
[developer] - label 2
[mozilla] - label 1
[org] - TLD
Order of component files
Html - CSS & JS
Parses then generate DOM(html)
Then generates CSSOM.
Then compiles and executes JS
Web Toolbox: Component Files (Assets)
Collective name for all the other stuff(music, images, music, vids, pdf, and word docs)
Web Toolbox: Component Files (code files)
A website is made up of different file
Code files: built thru html, css, and JavaScript
DNS purpose for the web?
When you type a web address the browser looks at the dns to find its IP address so it can retrieve the website. Need to locate website before an http messge can be sent.
TCP/IP full definition
Transmision control protocol and internet protocol are communication protocols that define how data should travel across the internet.
Internet connection purpose for web?
Allows you to send and retrieve data on the web