10 MCQ for topic 3, operating system

In the layered approach of Operating Systems __________

• Bottom Layer(0) is the User interface

• Highest Layer(N) is the User interface

• Bottom Layer(N) is the hardware

• Highest Layer(N) is the hardware

What is the advantage of Layered Approach?

• Simplicity of construction and debugging

• Existing features can be subtracted

• Allows the addition of new services

• Modular design

The Operating System Service of Communication are __________?

• Program capabilities to read and

  write files and directories, create and delete them, search them,

  list file Information, permission management.

• Ensure correct computing by detecting

  errors in the CPU and memory hardware, in I/O devices,

  or in user programs.

• The system must be able to load a

  program into memory and to run that program, end execution,

  either normally or abnormally (indicating error).

• Processes may exchange information,

  on the same computer or between computers over a

  network

What is the correct definition of Microkernel Benefits

• Reliability - Existing features can be subtracted

• Extensibility - Small microkernel can be rigorously tested

• Portability - New features added

• Flexibility - Existing features can be subtracted

The correct definitions of the Type of System Calls

• Process control - Get time and date.

• Protection - Load,execute process.

• File management - Get permission.

• Device management - Get device attributes.

Which is not the correct method of passing parameters between a running program and the operating system.

• Pass the parameters in registers.

• Parameters is stored in to a blocked file and send it to the register.

• Parameters stored in a block, or table, in memory, and

  address of block passed as a parameter in a register.

• Parameters placed, or pushed, onto the stack by the

  program and popped off the stack by the operating

  system.

Which is not the traditional services included in operating system?

• File systems

• Virtual memory manager

• Device Management

• Windowing system

Which of the following is the additional function that exists to ensure efficient system operation?

• I/O operations

• Error detection

• Accounting

• Communications

Which one of the following is the correct aim of User goals?

• operating system should be easy to

  design, implement, and maintain, as well as flexible,

  reliable, error-free, and efficient.

• operating system should be convenient to

  use, easy to learn, reliable, safe, and fast.

• Almost all operating systems have a user

  interface (UI)

• allocating resources to multiple users or

  multiple jobs running at the same time.

Communication may take place using either ________ or _______

• shared message , passing memory.

• shared I/O , and passing user interface (UI).

• passing message , shared memory.