74. RTOS stands for_____________________?

A. real-life operating system
B. real-time operating system
C. real-time operating software
D. real-life operating software
✅ The correct answer is option B.
Explanation: Embedded applications are built on top of a real-time operating system (RTOS).

76. Cleanroom software engineering complies with the operational analysis principles by using a method called known as________________?

A. box structure specification
B. referential transparency
C. degenerative error correction
D. none of the mentioned
✅ The correct answer is option A.
Explanation: Box structures are descriptions of functions that exhibit properties essential for effective system specification and design.

80. The ________________ of a specification language indicates how the language represents system requirements?

A. semantic domain
B. syntactic domain
C. sequence
D. set
✅ The correct answer is option A.
Explanation: For example, a programming language has a set of formal semantics that enables the software developer to specify algorithms that transform input to output.