CIA考试题:CIA英文试题训练(1)
4 The information systems and audit directors agreed on the need to maintain security and integrity of transmissions and the data they represent. The best means of ensuring the confidentiality of satellite transmissions would be1380
AEncryption
BAccess control
CMonitoring software
DCyclic redundancy checks
A yesEncryption encodes data before transmission over communication lines in order to prevent its use by unauthorized users but allow its recovery by authorized users. Encryption is the best means of ensuring the confidentiality of satellite transmissions. If an unauthorized individual records the transmissions, they will not be intelligible without proper decoding.
Bno Access control protests against unauthorized entry to the application systems but does not protect the transmission of data.
CnoMonitoring software is designed to monitor performance( human or machine ) for specified functions such as number of tasks preformed or capacity used.
DnoCyclic redundancy checks are complies computations performed with the data bits and the check bits in data transmissions to ensure the integrity, not the confidentiality, of the data.