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AP Computer Science Principles Terms Study Guide

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AP Computer Science Principles Terms Study Guide protocol - ANSWER-procedure; code of behavior to dictate how the communication should happen and how data gets from one place on the Internet to another. Internet Protocol - ANSWER-(IP) sets the rules for how information is transferred from one ...

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  • October 29, 2024
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  • AP Computer Science
  • AP Computer Science
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AP Computer Science Principles Terms

Study Guide


protocol - ANSWER✔✔-procedure; code of behavior to dictate how the communication should happen

and how data gets from one place on the Internet to another.


Internet Protocol - ANSWER✔✔-(IP) sets the rules for how information is


transferred from one computer to another.


Routers - ANSWER✔✔-makes up the IP connections (web of connected routers/ devices that help send

info from one computer to another


IP Addresses - ANSWER✔✔-required for every device that is directly connected to a TCP/IP network.

Always identifies the packet's final destination, even if its on another network. #.#.#.# where each #

stands for a number in the range of 0-225


packets - ANSWER✔✔-medium in which data is stored. big packet broken down to little packets via

Internet. labeled / assigned a packet number os receiving computer can put it back in the right order.

(known as TCP or Transmission Control Protocol)




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, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




port - ANSWER✔✔-a number which is assigned by TCP to indicate what type of internet service the data

should be used for. EX: SMTP (email) uses port 25, while HTTP (normal web browsing) uses port 80


TCP - ANSWER✔✔-the data created into packets, which are then given a port/ packet number. IP adds

destination and return address. Go through routers to destination


routing table - ANSWER✔✔-Routers are programmed with instructions about where to send each packet

of data, depending on the destination's IP address. These instructions are often stored in a routing table.

Routers can judge, based on the initial


digits of an IP address, which direction packets need to be sent.


the router just sends the packet one step closer to the destination, and lets the next router


take care of the rest.


Domain name system - ANSWER✔✔-(DNS) A large database of unique IP addresses that correspond with

domain names


Dynamic Host Configuration Protocol - ANSWER✔✔-helps to assign each device an IP address. When

computers connect to a network, they will connect to a DHCP server. The DHCP server is able to access


a pool of available IP addresses, and the server is responsible for assigning each computer on the

network a


unique IP address.

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