Languages and Protocols of the Web

An HTML reference sheet

HyperText Transfer Protocol (HTTP) lies in the Presentation layer of the OSI Model because HTTP format web data so the user can view it. HTTP is how your web browser requests resources from a web server. There are different actions that happen:

  • GET - access/download the resource, such as view the webpage
  • POST - send some data, such as through a webform.
  • additional other HTTP request methods - link

Networking

A brief introduction to computer networking

A computer network is a collection of computing devices that are connected to communicate and share resources. Email, IM, and websites all rely on communication that occur across a wireless computer network. Wireless connections use radio waves or infra-red signals to send and receive data. Sometimes, we connect our phones (e.g., to transfer photos) or printers (e.g., to print our homework) to our computer using a wired connection. Computer networks contain devices other than computers. Any device on a network is called a node.

A6 - Midterm & Retake Rules

Rules for retaking the midterm. Due Mon, Nov. 19 at the start of class

Retaking an exam is not a right, it’s an opportunity that you must earn. Students who don’t do any of their work or don’t put any effort to their retake attempt do not deserve a chance to waste the teacher’s time.

Bash - Reference Sheet

A reference sheet of the Bash commands we covered in class.

Bash is a Unix shell and command language. It has been distributed widely as the default login shell for most Linux distributions and Apple’s macOS/OS X. Bash typically runs in a text window where you can type commands, telling the computer what to do.

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