COMPUTER SCIENCE CAFÉ
  • WORKBOOKS
  • BLOCKY GAMES
  • GCSE
    • CAMBRIDGE GCSE
  • IB
  • A LEVEL
  • LEARN TO CODE
  • ROBOTICS ENGINEERING
  • MORE
    • CLASS PROJECTS
    • Classroom Discussions
    • Useful Links
    • SUBSCRIBE
    • ABOUT US
    • CONTACT US
    • PRIVACY POLICY
  • WORKBOOKS
  • BLOCKY GAMES
  • GCSE
    • CAMBRIDGE GCSE
  • IB
  • A LEVEL
  • LEARN TO CODE
  • ROBOTICS ENGINEERING
  • MORE
    • CLASS PROJECTS
    • Classroom Discussions
    • Useful Links
    • SUBSCRIBE
    • ABOUT US
    • CONTACT US
    • PRIVACY POLICY

Picture
TERMINOLOGY GLOSSARY
Packet of Data: A unit of data that is transmitted over a network.
​Packet Header: The part of a packet that contains information about the packet, such as the source and destination addresses.
Payload: The part of a packet that contains the actual data being transmitted.
Trailer: The part of a packet that contains additional information, such as error checking codes.
Destination Address: The address that specifies the recipient of a packet.
Packet Number: A unique identifier assigned to each packet to help ensure that packets are received in the correct order.
Originator’s Address: The address that specifies the sender of a packet.
Packet Switching: A method of transmitting data in which packets are sent individually over a network and reassembled at the destination.
Circuit Switching: A method of transmitting data in which a dedicated circuit is established between the sender and receiver.
Data Transmission: The process of sending and receiving data over a network or communication channel.
Serial Transmission: A method of data transmission in which data is sent one bit at a time over a single communication channel.
Parallel Transmission: A method of data transmission in which multiple bits are sent simultaneously over multiple communication channels.
Simplex Transmission: A method of data transmission in which data flows in only one direction, from sender to receiver.
Half-duplex Transmission: A method of data transmission in which data can flow in both directions, but not simultaneously.
Full-duplex Transmission: A method of data transmission in which data can flow in both directions simultaneously.
Universal Serial Bus (USB): A standard interface for connecting devices to a computer, used for data transfer and charging.
Data Transmission Errors: Errors that occur during the transmission of data, resulting in incorrect or incomplete data at the receiving end.
Transmission Interference: The distortion or corruption of data during transmission due to interference from other signals or sources.
Data Loss: The loss of data during transmission, due to errors or interference.
Data Gain: The addition of data during transmission, due to errors or interference.
Data Change: Alterations made to data during transmission, due to errors or interference.
Parity Bit: An extra bit added to a binary code to ensure that the total number of ones in the code is either even or odd.
Parity Byte: A byte containing a parity bit, used for error detection and correction.
Parity Block: A block of data that includes one or more parity bytes, used for error detection and correction.
Checksum: A value calculated from a block of data, used to detect errors or changes in the data.
Echo Check: A method of error detection that involves sending a copy of the transmitted data back to the sender for comparison.
Check Digit: A digit added to a number or code, used for error detection and correction.
ISBN: International Standard Book Number, a unique identifier for books used in the publishing industry.
Automatic Repeat Query (ARQ): A method of error control used in data transmission, in which the receiver requests the retransmission of data that is found to be incorrect or incomplete.
ARQ Positive/Negative Acknowledgements: Signals sent by the receiver to the sender to indicate whether the received data was correct or incorrect.
ARQ Timeout: The length of time a receiver will wait for a response from the sender before initiating a retransmission request.
Encryption: The process of converting data into a secret code to protect its confidentiality.
Asymmetric Encryption: A method of encryption that uses a pair of keys, one for encryption and one for decryption.
Symmetric Encryption: A method of encryption that uses a single key for both encryption and decryption.
Public Keys: Keys used in asymmetric encryption that are freely available and used to encrypt messages.
Private Keys: Keys used in asymmetric encryption that are kept secret and used to decrypt messages.
Picture
ALSO IN THIS TOPIC
2.1.1 METHODS OF DATA TRANSMISSION | Data Packets
2.1.2 METHODS OF DATA TRANSMISSION | Serial, Parallel, Simplex, Duplex
2.1.3 METHODS OF DATA TRANSMISSION | The Universal Serial Bus
2.2 METHODS OF ERROR DETECTION | Parity Checks, Check Sum, Check Digit, ARQ
2.3 ENCRYPTION | Symmetric and Asymmetric Encryption
TOPIC 2 KEY TERMINOLOGY
TOPIC 2 ANSWERSTOPIC 2 TEACHER RESOURCES (CIE)
Picture
SUGGESTIONS
We would love to hear from you
SUBSCRIBE 
To enjoy more benefits
We hope you find this site useful. If you notice any errors or would like to contribute material then please contact us.