a) Reliability and Usability are important software quality attributes. Give a brief explanation of both attributes and discuss which of these attributes is easier to quantify and measure. b) Object Points and Function Points are general, high level system size metrics. Which aspects of the software system are taken into account in the Object Point metric, and which in the Function Point metric? c) ISO standards define a set of software quality characteristics and sub-characteristics. They specify which quality characteristics are influenced by which sub-characteristics. i. Discuss briefly quality sub-characteristics affecting software reliability and software usability. ii. Explain why highly reliable systems tend to be less efficient.

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