Question:

a) Differentiate between ‘Gross Settlement' and ‘Multilateral Net Settlement' providing suitable examples where necessary to support your answer.

b) Differentiate between the symmetric and the asymmetric encryption system providing illustrations where necessary to support your answer.

c) The following technologies can be applied to an e-banking infrastructure to ensure security. Briefly explain the role of each one of them.

(i) SSL (Secure Socket Layer)
(ii) Digital Certificate

d) Explain the concept behind digital signature and how it can be used to ensure both authenticity and confidentiality. (Provide suitable illustration to support answer).