Which category the following statement belongs,”Classes to create and manage sessions are usually part of a WAF”?
		A. Session management
B. Security
C. User interaction
D. Database support
		A. Session management
B. Security
C. User interaction
D. Database support
		A. difficult
B. expensive
C. unreliable
D. difficult and expensive
Explanation: Frameworks can be difficult and expensive to evaluate available frameworks to choose the most appropriate one.
		A. Control couple
B. Application object
C. Data couple
D. Database object
		A. real-life operating system
B. real-time operating system
C. real-time operating software
D. real-life operating software
Explanation: Embedded applications are built on top of a real-time operating system (RTOS).
		A. Parameter incompatibility
B. Operation incompleteness
C. Operation incompatibility
D. None of the mentioned
		A. Sampling model
B. Component model
C. Certification model
D. All of the mentioned
		A. software re-engineering
B. artificial programming
C. aspect-oriented programming
D. all of the mentioned
Explanation: Aspect-oriented programming languages such as AspectJ have been developed that extend object-oriented programming to include aspects