Edexcel curriculum (2015)
AlgorithmsApplication sof'wreAsciiBinaryCacheClient-ServerCloudCompressionComputational thinkCPUCyber securityDatabaseFetch-d-e cycleEmbedded systemEncryptionEnvironmentEthicsFile sizeFlow chartHexadecimalHigh Level languageISP/InternetLaw & LegislationLogicMagnetic HDDNetworkingOpen sourceOperating systemOptical storagePeer to peerPictures (data rep)ProtocolsRun length encodingRAMROMSimulation softwareSolid state HDSoundStored programUtility Sof'wre |
EncryptionAnswer
Two reasons: • Encrypted data is encoded/scrambled so that it cannot be understood (1) • The unauthorised person would not have the key to decrypt the data (1) Encryption - Caesar cipherEncryption - Caesar cipherAnswer
Each character is shifted in the alphabet (1) by a fixed number of positions (1) Encryption - Caesar cipherAnswer
E becomes A (1), A becomes W (1) LAW |