Operating System Basics Questions and Answers

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Q171
In Priority Scheduling a priority number (integer) is associated with each process. The CPU is allocated to the process with the highest priority (smallest integer = highest priority). The problem of, Starvation ? low priority processes may never execute, is resolved by __________.
  • A Terminating the process.
  • B Aging
  • C Mutual Exclusion
  • D Semaphore
Answer: Option B
Q172
CPU performance is measured through ________.
  • A Throughput
  • B MHz
  • C Flaps
  • D None of the above
Answer: Option A
Q173
PCB =
  • A Program Control Block
  • B Process Control Block
  • C Process Communication Block
  • D None of the above
Answer: Option B
Q174
Software is a program that directs the overall operation of the computer, facilitates its use and interacts with the user. What are the different types of this software ?
  • A Operating system
  • B Language Compiler
  • C Utilities
  • D All of the above
Answer: Option D
Q175
A __________ is a software that manages the time of a microprocessor to ensure that all time critical events are processed as efficiently as possible. This software allows the system activities to be divided into multiple independent elements called tasks.
  • A Kernel
  • B Shell
  • C Processor
  • D Device Driver
Answer: Option A
Q176
The primary job of the operating system of a computer is to ________.
  • A Command Resources
  • B Manage Resources
  • C Provide Utilities
  • D Be user friendly
Answer: Option B
Q177
With the round robin CPU scheduling in a time-shared system ________.
  • A Using very large time slice degenerates in to first come first served algorithm
  • B Using extremely small time slices improve performance
  • C Using extremely small time slices degenerate in to last in first out algorithm
  • D Using medium sized time slices leads to shortest request time first algorithm
Answer: Option A
Q178
Which of the following is a criterion to evaluate a scheduling algorithm?
  • A CPU Utilization: Keep CPU utilization as high as possible.
  • B Throughput: number of processes completed per unit time.
  • C Waiting Time: Amount of time spent ready to run but not running.
  • D All of the above
Answer: Option D
Q179
Which of the following is contained in Process Control Block (PCB)?
  • A Process Number
  • B List of Open files
  • C Memory Limits
  • D All of the Above
Answer: Option D
Q180
Super computers typically employ _______.
  • A Real time Operating system
  • B Multiprocessors OS
  • C desktop OS
  • D None of the above
Answer: Option B

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