GCSE Computer Science Key words N-P 0.0 / 5 ? ComputingGCSE Computer Science Key words N-PGCSEAll boards Created by: DSDCreated on: 29-12-17 22:37 Nested IF statement A selection statement made up of multiple lF statements inside each other. 1 of 44 Network forensics Investigations that organisations undertake to find the cause of attacks on their network 2 of 44 Network interface controller (NIC) An internal piece of hardware that allows a device to connect to a network. 3 of 44 Network policy A set of rules and procedures an organisation will follow to ensure their network is protected against attacks. 4 of 44 Network security Protection against network attacks. 5 of 44 Nibble 4 bits. 6 of 44 Non-volatile memory Memory that retains its contents when it has no power. 7 of 44 Normal data A type of test data that simulates the inputs that users are likely to enter. 8 of 44 NOT One of the Boolean operators. logic gate. 0¬ =1 1¬ =0 9 of 44 Open source (software) Software that can be modified and shared by anyone. 10 of 44 Operating system A piece of software responsible for running the computer, managing hardware, applications, users and resources. 11 of 44 Operator A special symbol like +, ‘, =, AND, ==, that carries out a particular function. 12 of 44 Optical disc CD, DVD or BIu-Ray disc that is read / written to with lasers. 13 of 44 Optical drive Device used to read and write to optical discs. 14 of 44 0R One of the Boolean logic gate operators. 0∨0=0 1∨0=1 0∨1=1 1∨1=1 15 of 44 Overclocking Running a CPU at a higher clock speed than was intended. 16 of 44 Overflow error An error that occurs when the computer attempts to process a number that has too many bits for it to handle. 17 of 44 Packets (networks) Small, equal-sized units of data used to transfer files over networks. 18 of 44 Packet switching The process of directing data packets on a network using routers and the IP protocol. 19 of 44 Parameter A variable that a sub program requires in order to run — it’s only defined within the sub program. 20 of 44 Parity bit A bit placed at the end of binary data to show if it’s been received correctly. 21 of 44 Passive attack (networks) Where a hacker monitors data travelling on a network. 22 of 44 Password A string of characters that allows access to certain parts of a computer or program. 23 of 44 Patent A licence that protects new inventions, ideas and concepts 24 of 44 Payload (network packets) The part of a packet with the actual data. 25 of 44 Peer-Io-peer (P2P) network A network in which all devices are equal and connect directly to each other. 26 of 44 Pentesting (penetration testing) The process of simulating attacks on a network to identify weaknesses. 27 of 44 Peripherals External hardware connected to a computer. 28 of 44 Petabyte 1000 terabytes. 29 of 44 Phishing When criminals send emails or texts to someone claiming to be a well- known business. 30 of 44 Pixels Small dots that make up a bitmap image. 31 of 44 Platform A computer system that other applications can run on. 32 of 44 POP3 A protocol used to retrieve emails from a server. 33 of 44 Power supply A piece of hardware that gives the other pieces of hardware the energy they need to run. 34 of 44 Primary storage Memory that can be accessed directly by the CPU. 35 of 44 Procedure A sub program that carries out a list of instructions. 36 of 44 Processing The execution of program instructions by the CPU. 37 of 44 Program counter (PC) Holds the memory address of the next CPU instruction. 38 of 44 Program flow The order in which statements are executed in a program (controlled with selection and iteration statements). 39 of 44 Program A set of instructions that can be executed on a computer: programming 40 of 44 Proprietary software Software where modifying and sharing is not permitted. 41 of 44 Protocols (networks) A set of rules for how devices communicate over a network. 42 of 44 Pseudocode A set of instructions in the style of a programming language but using plain English. 43 of 44 Public domain Describes content which has no copyright attached to it. 44 of 44
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