AP Computer Science 109/32 [100% PASS]

AP Computer Science 109/32 [100% PASS] Bit *Ans* Binary Digit, the single unit of information in a computer. Bit rate *Ans* the number of bits that are processed in a unit of time Protocol *Ans* A set of rules used for transmitting data. Router *Ans* a computer designed to receive and redirect packets of information based upon the addressing information (IP address) Packets *Ans* Small chunks of information that have been chunks of information formed from large chunks of information TCP (Transmission Control Protocol) *Ans* Provides reliable, ordered and error checked delivery stream of packets on the Internet. DNS (Domain Name Service) *Ans* the service that translates URLs to IP addresses HTTP (Hypertext Transfer Protocol) *Ans* The protocol used for sending and receiving web pages -ASCII text- based protocol -At the same level as DNS Compression *Ans* Represents the same data using fewer bits Pixel *Ans* the fundamental unit of a digital image a) short for picture element b) typically a tiny square or dot which contains a single point of color or larger image Metadata *Ans* data that describes other data a) Examples: size of number, number of colors, or resolution (how clear the image is) Internet Packet *Ans* The packet contains the data that needs to be sent, but also other data like the to and from address, and packet number. Lossless Compression *Ans* a data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data. Lossy Compression *Ans* (or irreversible compression) a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg