PTU B.Tech ECE 6th Semester May 2019 71120 OPERATING SYSTEMS Question Papers

Roll No.

Total No. of Questions : 09

Total No. of Pages : 02

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B.Tech.(ECE)/(ETE) (2011 Onwards) (Sem.-6)

OPERATING SYSTEMS

Subject Code : BTCS-401

M.Code: 71120

Time: 3 Hrs.

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Max. Marks : 60

INSTRUCTION TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

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SECTION-A

Q1 Answer briefly :

1. List various functions of an Operating System.
2. Write at least two advantages of layered architecture of Operating System.
3. Define the term Turnaround time and waiting time.

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4. Explain the term PCB.
5. Explain in brief about the term Fragmentation in reference to memory management.
6. Explain in brief about Thrashing.
7. Define the term seek time and rotational latency time.
8. Differentiate between Network operating System and Distributed operating System.

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9. Why is disk scheduling important?
10. List various goals of Protection.

SECTION-B

Q2 Write a note on the functions of kernel and shell.

Q3 Define the term deadlock. Explain deadlock prevention in detail.

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Q4 Explain the concept of distributed operating system in detail.

Q5 Differentiate between LINUX and Windows based operating systems.

Q6 Define the term security. Explain various goals of security

SECTION-C

Q7 Explain the paging scheme of memory management in detail.

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Q8 Write a detailed note on File System Architecture.

Q9 a) Write a detailed note on Device management policies.

b) Explain the concept of Process synchronization in detail.

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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