Operating System (OS)
Which of the following functions is(are) performed by the loader

All of these
physically place the machine instructions and data into memory.
None of these
adjust all address dependent locations, such as address constants, to correspond to the allocated space.
allocate space in memory for the programs and resolve symbolic references between object decks

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Operating System (OS)
The instruction register

contains the address of the memory location that is to be read from or stored into.
is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
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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Operating System (OS)
All of the following are task performed by the operating system except

Managing hardware on the computer
Provides an interface for user to interact with computer
Performing housekeeping task like file compression and disk defragmentation
Controlling the access that application program has to the CPU

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