Week 8: HTML, CSS, JavaScript

IP (Internet Protocol)

a way by which computers can identify one another across the internet since every computer has a unique address in the world.

TCP (Transmission Control Protocol)

helps keep track of the sequence of packets being sent and is used to distinguish web services from one another.

DNS (Domain Name Systems)

a collection of servers on the internet that are used to route website addresses like harvard.edu to a specific IP address; simply a table or database that links specific, fully qualified domain names to specific IP addresses.

DHCP

a protocol that ascertains the IP address of your device and defines the default gateway and nameservers your device uses.

HTTP (hypertext transfer protocol)

an application-level protocol that developers use to build powerful and useful things through the transfer of data from one place to another. HTTPS is a secure version of this protocol.

200

response code; “OK”

301

response code; “Moved Permanently”

302

response code; “Found”

304

response code; “Not modified”

307

response code; “Temporary Redirect”

401

response code; “Unauthorized”

403

response code; “Forbidden”

404

response code; “Not Found”

418

response code; “Im a teapot”

500

response code; “Internal Server Error” (always your fault as the developer when they concern a product or application of your creation.)

503

response code; “Service Unavailable”

HTML (hypertext markup language)

made up of tags, each of which may have some attributes that describe it.

Hierarchy of tags

Regular Expressions/ regexes

a means by which to ensure that user-provided data fits a specific format.

CSS (Cascading Style Sheet)

a markup language that allows you to fine-tune the aesthetics of your HTML files; filled with properties, which include key-value pairs.

JavaScript

programming language that allows for interactivity within web pages.

Internet

the fundamental concepts and technologies that underpin how computers communicate and exchange information over a network

Routers

a networking device that forwards data packets between different networks

TCP/IP

a set of communication protocols used to connect network devices on the internet. It's a fundamental framework that enables global information exchange

Packets

What is being sent around computers; standardized and contains the source and destination

Ports

standardized numbers that represent different services running on a computer or server

path

the specific location or route through which a file or directory can be accessed within a file system

GET

a type of HTTP request that a web browser (the client) sends to a web server. 

developer tools

the environment and software used to write, compile, and debug code

frameworks

a pre-defined structural foundation that streamlines the development process for specific types of applications

Bootstrap

helps developers avoid writing extensive CSS from scratch by offering readily available styles and layouts