A business should choose the platform as a service (PaaS) cloud model when:

	a.	it doesn't need any operating system
	b.	it doesn't design its own applications but customizes the operating system
	c.	it designs its own applications but doesn't customize the operating system
	d.	it doesn't design its own applications and doesn't customize the operating system
	e.	it designs its own applications and customizes the operating system

The two-phase commit transaction model is designed toward what primary goal?

	a.	preventing security breaches
	b.	ensuring database consistency
	c.	speeding transaction processing
	d.	supporting mobile users
	e.	minimizing network load

In regard to transactions, atomicity means that a transaction:

	a.	only involves one data field
	b.	only involves one table
	c.	is only attempted once
	d.	all of the above
	e.	none of the above