Basic Operating System MCQ

Basic Operating System MCQ
321. OS/380 is a
  • Single user system
  • Multi user system
  • Single tasking system
  • None of these
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322. Thread is
  • Dispatch able unit of work
  • Can be interrupted
  • A and B both true
  • A and B both false
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323. Multithreading allows
  • To run threads concurrently
  • To run threads independently
  • A is true, B is false
  • A and B both true.
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324. For multithreading
  • Tasks to be performed can be independent
  • Task to be performed is essentially serialized.
  • Tasks cannot be divided into number of threads.
  • None is true
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325. The principal function of a process is
  • To execute machine instructions residing in main memory.
  • To execute assembly instructions residing outside main memory
  • A and B both true.
  • A and B both false.
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326. The trace of the process is
  • A set of instructins that execute process
  • A listing of sequence of instructions that execute process
  • A track of network
  • None of these
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327. The two state process models have the following states
  • Running and Not Running
  • Running and Ready
  • Ready and Blocked
  • New and Ready
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328. The process control blocks are referred for
  • Process control
  • I/O devices
  • Memory allocation
  • None of these
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329. Given three switch processes. when they occur match them
(1) Clock interrupt A-The processor encounters a virtual memory address reference for a world that is not in the main memory.
(2) I/O interrupt B-The operating system determines whether the currently running process has been executed for the maximum allowable time slice.
(3) Memory fault C- The operating system determines the I/O action that occurs.
  • 1-A, 2-B,3-C
  • 1-B, 2-C, 3-A
  • 1-B, 2-A, 3-C
  • 1-C, 2-B, 3-A
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330. With trap process control
  • Operating system determines the error or exception condition that is atal.
  • Operating system interrupted for maximum allowable time.
  • Are tables that manage information process
  • None of these
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