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Problem:
a) Authentication is the mechanism whereby a system securely identifies their users. Authentication system provides answers to the following questions:
- Who is the user? - Is the user really who he/she claims to be?
Typical authentication system usually consists of five major key elements. List them down.
b) Differentiate between malicious and non-malicious threats providing a suitable example for each.
c) Outline the main differences between a debit card and a credit card as a payment instrument.
d) Explain what is an e-Check and how does it works?
e) In what circumstances is the use of a credit card not appropriate for online payment of goods? What is the proposed alternative payment instrument used then?
f) A credit card gateway is one element of a suite of e-commerce software packages that when incorporated into a website allow for online shoppers to pay for goods and services. Outline the different steps involved when processing the transaction starting with the customer placing an order.
consider the use of metal detector in air port to test people for concealed weapon .in essence his is a form of hpothesis testing
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Question: (a) Which are the bodies responsible for policies and decisions on the exploitation and use of water resources. Explain their respective roles and functions? (b)
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