Describe the following biometric methods:-
(i) Retina scans,
(ii) Fingerprint scan,
(iii) Iris Scan.
Your answer should consider the following: the data storage requirements of the biometric template, the biometric characteristic which differentiates them, their accuracy, the user enrolment process and their relative merits.
Describe what is meant by Type I error, Type II error and the cross over error rate for a biometric system. What is considered the most significant error for a biometric access control system?
Compare the relative merits of a network based Intrusion Detection System (IDS) and a host based IDS.
Which kinds of IDS tend to report more false positives but are capable to detect new attacks?