Take This Basic Operating System Quiz & Enhance Your Skill

1.

A disk scheduling algorithm in an operating system causes the disk arm to sweek back and forth across the disk surface serving all request in its path. This is a
- A.
  
  First come first served
- B.
  
  Shortest seek time first
- C.
  
  Scan
- D.
  
  Eschenback scheme
Correct Answer
C. Scan

Explanation
The given scenario describes a disk scheduling algorithm where the disk arm moves back and forth across the disk surface to serve all requests in its path. This is known as the "scan" algorithm. In this algorithm, the disk arm starts at one end of the disk and moves towards the other end, serving all requests in its path. Once it reaches the end, it reverses its direction and repeats the process. This ensures that all requests are serviced, but it may result in longer seek times for requests located farther away from the current position of the disk arm.

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2.

Producer consumer problems can be solved using
- A.
  
  Semaphores
- B.
  
  Event counter
- C.
  
  Monitors
- D.
  
  All of the above
Correct Answer
D. All of the above

Explanation
The producer-consumer problem refers to a common synchronization problem in computer science where there is a need to coordinate the actions of two separate processes, one producing data and the other consuming it. Semaphores, event counters, and monitors are all different mechanisms that can be used to solve this problem. Semaphores are used for controlling access to shared resources, event counters can be used to keep track of the number of events or items produced or consumed, and monitors provide a high-level synchronization mechanism for managing concurrent access to shared resources. Therefore, all of the above options can be used to solve the producer-consumer problem.

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3.

XENIX can be used only with
- A.
  
  IBM-PCS
- B.
  
  IBM-PC/XT S
- C.
  
  Super computers
- D.
  
  IBM-PC/A/TS
Correct Answer
D. IBM-PC/A/TS

Explanation
XENIX can only be used with IBM-PC/A/TS.

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4.

When result of a computation depends on the speed of the process involved there is said to be
- A.
  
  Cycle stealing
- B.
  
  Rare condition
- C.
  
  A time clock
- D.
  
  A dead lock
Correct Answer
B. Rare condition

Explanation
When the result of a computation depends on the speed of the process involved, there is a rare condition. This means that the outcome of the computation is not consistent and can vary depending on the speed at which the process is executed. It suggests that the timing or synchronization of the processes is not properly controlled, leading to unpredictable results.

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5.

Relocation bits used by relocating loader are specified (generated) by
- A.
  
  Relocating loader itself
- B.
  
  Linker
- C.
  
  Assembler or translator
- D.
  
  Macro processor
Correct Answer
B. Linker

Explanation
The relocating loader is responsible for loading a program into memory and adjusting memory references so that they point to the correct locations. In order to do this, the relocating loader needs to know the specific memory addresses where the program will be loaded. These addresses are determined by the linker, which is responsible for combining object files and resolving external references. Therefore, the linker generates the relocation bits that are used by the relocating loader to perform the necessary adjustments.

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Take This Basic Operating System Quiz & Enhance Your Skill

A disk scheduling algorithm in an operating system causes the disk arm to sweek back and forth across the disk surface serving all request in its path. This is a

Producer consumer problems can be solved using

XENIX can be used only with

When result of a computation depends on the speed of the process involved there is said to be

Relocation bits used by relocating loader are specified (generated) by