Operating Systems - An Introductory Course

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11. Which of the following explains the word Volatile.

Volumes of data is stored

Data is typically lost when power is removed

Data can be retrived

Data is saved if the power is lost

Data can never be lost

12. When speaking of the two internal registers MAR means Memory Address Register and MBR means _________________________________________________

Memory Between Register

Main Buffing Register

Memory Buffer Register

Main Buffer Report

Memory Between Report

13. ___________________________ can be assigned to a variety if functions by the progrmmer.
*Usually they are general purpose in nature and can be used with any machine instruction that performs operation on data.
* Some ristriction may apply

Data register

Address Register

14. True or False
On some processors, the program counter is user visible, but on many it is not visible.

True

False

15. Data and Address Registers

What us the common mode of addressing that involves adding an index to a base value to get the effective address.

Data

Index register

My Register

Segment Pointer

16. The _____________________ register contains the following:
*main memory and address of data and instructions
*portion of the address that is used in the calculation of the complete of effective address.

Data

Address

Instruction

Calculation

Effective

17. I specify the address in memory for the next read or write, what am I?

Read Only Memory

Random Access Memory

Random Address Register

My Address Register

Memory Address Register

18. Segment Pointer: With segmented _____________________, memory is divided into segments, which are variable-length blocks of words

Data

Addressing

Resister

Register

EPROM

19. ______________________________: this is used by the processor to control the operation of the processor and by privileged OS routines to control the execution of programs.

Central Processing Unit

OS routines

User-visible register

Control and status register

Modem

20. True or False
There is a clean separation of registers into User-visible registers and Control and Status registers.

True

False