Computer System Architecture

531. Return instruction is written in ____________ to written to main program:

1. Subroutine
2. Main program
3. Both a & b
4. None of these

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532. When subroutine is called contents of program counter is location address of ____________ instruction following call instruction is stored on ____________ and program execution is transferred to ____________address:

1. Non executable, pointer and subroutine
2. Executable, Stack and Main program
3. Executable, Queue and Subroutine
4. Executable, Stack and Subroutine

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533. A subroutine called by another subroutine is called:

1. Nested
2. For loop
3. Break
4. Continue

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534. The extent nesting in subroutine is limited only by:

1. Number of available Stack locations
2. Number of available Addressing locations
3. Number of available CPU locations
4. Number of available Memory locations

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535. Which are of the following instructions of hardware subroutines:

1. SCAL
2. SXIT
3. Both a & b
4. None of these

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536. Importance in local variable and index registers in subroutine does ____________:

1. Alter
2. Not alter
3. Both a & b
4. None of these

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537. Markers in subroutine cannot be accepted as limits whereas this markers stands for:

1. Top of stack
2. Bottom of stack
3. Middle of stack
4. All of these

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538. Subroutines are placed in identical section to caller so that SCAL and SXIT ____________ overpass divison limits:

1. Don't
2. Does
3. Cross
4. By

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539. ____________ subroutine declaration come after procedure announcement:

1. Global
2. Local
3. Both a & b
4. None of these

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540. subroutines are invoked by using their ____________ in a subroutine call statement and replacing formal parameters with ____________ parameters:

1. Identifier and formal
2. Identifier and actual
3. Expression and arguments
4. None of these

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