Page 20 - Trackpad_V2.1_class8
P. 20
Infrared Communication: The infrared light transmits data through the air and can propagate
throughout the room by bouncing off surfaces but will not penetrate walls. This type of
transmission uses infrared light to send data. Infrared light is similar to
normal lights, except that these have a longer wavelength. Therefore, they
are not visible to us. You can see the use of this type of transmission in
everyday life: TV remotes, automotive garage doors, wireless speakers, etc.
All of these make use of infrared light for transmission.
PROTOCOLS
Protocol is a set of rules that governs the communication between computers on a network.
Certain network protocols and standards must be followed in order to ensure that your computer
can communicate with another computer over a network. Some of the Internet protocols for
addressing the data transmitted over the Internet are here.
HYPERTEXT TRANSFER PROTOCOL (HTTP)
HTTP stands for Hypertext Transfer Protocol. It is the set of rules or protocols that govern the
transfer of hypertext (webpages) between two or more computers using a standard language
HTML. It is the primary protocol used to exchange data between a web browser and a website.
HYPERTEXT TRANSFER PROTOCOL SECURE (HTTPS)
HTTPS stands for Hypertext Transfer Protocol Secure. It is an extension of Hypertext Transfer
Protocol used for secure communication over a network. It establishes a secure connection by
establishing an encrypting link between the browser and server, hence maintaining data integrity
by encrypting the data.
TRANSMISSION CONTROL PROTOCOL/INTERNET PROTOCOL (TCP/IP)
TCP/IP stands for Transmission Control Protocol/Internet Protocol. It enables computers over
a network to communicate with each other. A set of LANs and WANs uses the TCP/IP suite to
communicate with each other.
FILE TRANSFER PROTOCOL (FTP)
FTP stands for File Transfer Protocol. It is a part of the TCP/IP protocol suite and enables files to be
transferred between computers.
INTERNET MESSAGE ACCESS PROTOCOL (IMAP)
IMAP stands for Internet Message Access Protocol. It is an e-mail protocol that stores e-mail
messages on a mail server and allows the user to view, access and manipulate the messages on
the mail server from their computer.
18 Trackpad (V2.1)-VIII

