NPTEL Introduction to Operating Systems Assignment 1 Answer
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NPTEL Introduction to Operating Systems Assignment
Operating systems (OS) provide the crucial interface between a computer’s hardware and the applications that run on it. It allows us to write programs without bothering much about the hardware. It also ensures that the computer’s resources such as its CPU, hard disk, and memory, are appropriately utilized. In this course, we dwell into how the OS manages to do all this in an efficient manner. This is an introductory course, for students with prior knowledge of computer organization. The course is based on an OS called xv6, which in many ways is similar to the Linux operating systems.
INTENDED AUDIENCE B.E./Msc (Computer Science)
Next Week Assignment Answers
This course can have Associate in Nursing unproctored programming communication conjointly excluding the Proctored communication, please check announcement section for date and time. The programming communication can have a weightage of twenty fifth towards the ultimate score.
- Assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
- ( All assignments in a particular week will be counted towards final scoring – quizzes and programming assignments).
- Unproctored programming exam score = 25% of the average scores obtained as part of Unproctored programming exam – out of 100
- Proctored Exam score =50% of the proctored certification exam score out of 100
UNPROCTORED PROGRAMMING EXAM SCORE >=10/25 AND PROCTORED EXAM SCORE >= 20/50.
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Q1. A distributed system is a system whose components are located on different computers on a network, which communicate and coordinate their actions by passing messages to one another.
a. a and b
b. a and c
c. c and d
d. All of the above
Answers:- d
Q2. Which one of the following is False ?
a. Monolithic Kernel has direct communication with all the modules.
b. Monolithic Kernel is faster than microkernel.
c. Microkernel is faster than monolithic kernels
d. Monolithic Kernel is more crashable compared to microkernel
Answers:- b
Q3. To extend the IO address range, we use the low memory region of the RAM as Memory mapped IO.
a. True
b. False
Answers:- b
Q4. Match the following?
a. 1-d, 2-c, 3-b, 4-a
b. 1-c, 2-d, 3-b, 4-a
C. 1-b, 2-a, 3-c, 4-d
d. 1-a, 2-b, 3-d, 4-a
Answers:- a
Q5. fopen() system call switches from _____________ space
Answers:- USER
Q6. fopen() system call switches to _____________ space.
Answers:- KERNEL
Q7. For monolithic kernels, which of the following is False.
i) The entire kernel runs in protected mode.
ii) Communication between kernel modules is by system calls.
iii) Is likely to be more crashable.
a. I only
b. II only
C. I and III only
d. II and III only
Answers:- b
Q8. _____________ module in the operating system helps in communicating with hardware devices.
Answers:- DEVICE DRIVER
Q9. In the absence of system calls, a user process can never dynamically allocate memory.
a. True
b. False
Answers:- A
Q10. What are the features of Contiki OS
a. Provide good user interface features
b. Energy aware scheduling.
C. Small footprint
d. Zigbee protocol support
Answers:- C
Q11. With a monolithic kernel such as Linux, a process, when executing can occupy the entire 4GB address space (assuming a 32 bit system).
Answer:- A