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In the computer world, a frame can be many different things. The different definitions of "frame" are listed below:
Some Web sites use HTML frames, where the pages are broken up into various areas. Each area consists of an independent Web page. Frames allow the multiple Web pages to all show up in the same page.
Graphics and desktop publishing programs also use frames. In these programs, frames are rectangular areas meant for inserting graphics and text. They allow users to place objects wherever they want to on the page.
In video and animation, frames are individual pictures in a sequence of images. For example, a Flash movie you see on the Web may play 12 frames per second, creating the appearance of motion. Most video is shot at 24 or 30 frames per second, or FPS. FPS is often measured in 3D games as a way of checking how fast the graphics processor of a computer is.
(Source : **broken link removed**)
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+)What is Packet
- A packet is the unit of data that is routed between an origin and a destination on the Internet or any other packet-switched network. When any file (e-mail message, HTML file, Graphics Interchange Format file, Uniform Resource Locator request, and so forth) is sent from one place to another on the Internet, the Transmission Control Protocol (TCP) layer of TCP/IP divides the file into "chunks" of an efficient size for routing. Each of these packets is separately numbered and includes the Internet address of the destination. The individual packets for a given file may travel different routes through the Internet. When they have all arrived, they are reassembled into the original file (by the TCP layer at the receiving end).
A packet-switching scheme is an efficient way to handle transmissions on a connectionless network such as the Internet. An alternative scheme, circuit-switched, is used for networks allocated for voice connections. In circuit-switching, lines in the network are shared among many users as with packet-switching, but each connection requires the dedication of a particular path for the duration of the connection.
+)What is Padding
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Definition: padding: Padding is the process of adding unused data to the end of a message in order to make it conform to a certain length. For example, block-ciphers often work on blocks that are 64-bits (8-bytes) long. Therefore, if you have a message that is 77-bytes long, you will need to "pad" it with an extra 3-bytes to make it an even 80-bytes in size (10-blocks). Key point: Padding is a regular feature of all crypto algorithms, including hashing and encryption. Some algorithms have been broken due to poor choices for padding. Most importantly, however, the size of the message can often reveal details about its contents. For example, let's assume a protocol whereby somebody accepts something with a simple message of "yes", but when it declines, it says "no" along with a reason why it was rejected. Therefore, even though the messages are encrypted, the "yes" will be a short message but the "no" will be a long message.
(source: https://linux.about.com/cs/linux101/g/padding.htm)
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