Operating System (OS)
Which of the following operating system reads and reacts in actual time?

Real Time System
Batch Processing System
Time Sharing System
Quick Response System

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Operating System (OS)
Memory

None of these
is typically characterized by interactive processing and time-slicing of the CPU
is a sequence of instructions
is the device where information is stored
is a device that performs a sequence of operations specified by instructions in memory.

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Operating System (OS)
Which of the following is not true about documentation?

All of these
None of these
Documentation increases the maintenance time and cost
Documentation gives better understanding of the problem
Documentation, of a system, should be as clear and direct as possible

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Operating System (OS)
Backups should be done

as several image copies, followed by an incremental
as several incrementals, followed by an image copy
weekly for most installations
None of these
daily for most installations

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Operating System (OS)
The instruction register

is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
contains the address of the memory location that is to be read from or stored into.
None of these
is a hardware memory device which denotes the location of the current instruction being executed.
contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".

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