KEY TERMS

Protocol- the customs and regulations dealing with diplomatic formality, precedence and etiquette.

Types of protocols:

• TCP/IP- communication protocol for the internet.
• HTTP- creates a secure channel over an insecure network.
• SMTP- internet standard for electronic mail transmissions acroos internet networks.
• POP- an application used by email users to receive email from a remote server connection.
• FTP- it is a standard network protocol used to copy a file through a type of network such as the internet.

GUI- It is a graphical user interface to a computer. The first interface to a computer was more based on text-and-keyboard, and was brief. Before GUI came into existence DOS was before it. DOS is an example of the typical computer interface before GUIs

DATA TRANSMISSIONS- serial&parallel
Parallel- Multiple bits are sent to multiple different channels within the same path or cable. They often have a wider data bus than serial devices. As a result parallel transmissions have faster bit rate than serial transmission bit rate.
Serial- Instead of being sent at the same time, in this type of transmission bits are sent sequentially, within the same wire or channel. This can reduce cost but slow down transmission.

URL- It is the global address of documents and others on the world wide web. URLs are made up of different parts the first part is the protocol identifier, this identifies which protocol to use. The second part is the resource name, this is where the IP address comes in hand.

ERROR DETECTION- this refers to a class of techniques in detecting messages.