Practice Test 4 (Multiple Choice)

NASA launched its Surveyor 3 craft for the moon in 1967. Unintentionally, the craft bounced twice before achieving its soft landing on the moon. What caused Surveyor 3 to bounce?

• The craft’s radar was confused by highly reflective rocks on the moon.
• NASA misjudged the impact of lunar dust on the landing.
• The craft’s camera was unintentionally contaminated with a common type of Earth bacterium that spread and interfered with landing controls.
• None of the Above

The world's first digital camera was invented in 1975 by Steven J. Sasson. The device was the size of a toaster, but what size images did it take?

• 0.01 megapixels
• 0.10 megapixels
• 1 megapixels
• 10 megapixels

This first type of flowchart developed 1921 as a way to present every detail of a project where every part of the process is dependent upon or affected by every other part is known as:.

• First Process Flow
• Flowchart Flow
• Process Flow
• Process Chart

Which is NOT considered as a correct convention of writing pseudocode?

• Each instruction is written in one line.
• Each set of instructions is written from top to bottom, with only one entry and one exit.
• Keywords and indentation are used to signify particular control structures.
• Statements are written in simple English.

How does the Real-Time Operating System (RTOS) scheduling differ from general-purpose operating system scheduling?

• RTOS prioritizes tasks based on their urgency and deadlines
• RTOS uses only the First-Come, First-Served algorithm
• RTOS does not allow task preemption
• RTOS schedules tasks alphabetically

Which of the following is a disadvantage of the Shortest Job First (SJF) scheduling algorithm?

• It can cause starvation of longer processes
• It is too fast
• It requires too much memory
• It is not suitable for batch processing

In the context of process scheduling, what does "context switch" mean?

• Switching the CPU from one process to another
• Changing the process state from running to waiting
• Updating the process priority
• None of the above

Which feature can be implemented using encapsulation?

• Abstraction
• Polymorphism
• Overloading
• Inheritance

Which among the following is not a necessary condition for constructors?

• It must contain a definition body
• Its name must be same as that of class
• It must not have any return type
• It can contains arguments

Which type of members can’t be accessed in derived classes of a base class?

• Private
• Protected
• Public
• All can be accessed