Computer Architecture Set 5 MCQs

Q1 | What is subroutine nesting?

having multiple subroutines in a program

using a linking nest statement to put many subroutines under the same name

having one routine call the other

none of the mentioned

Q2 | The order in which the return addresses are generated and used is

lifo

fifo

random

highest priority

Q3 | In case of nested subroutines the return addresses are stored in

system heap

special memory buffers

processor stack

registers

Q4 | The appropriate return addresses are obtained with the help of in case of nested routines.

mar

mdr

buffers

stack-pointers

Q5 | When parameters are being passed on to the subroutines they are stored in

registers

memory locations

processor stacks

all of the mentioned

Q6 | The most efficient way of handling parameter passing is by using

general purpose registers

stacks

memory locations

none of the mentioned

Q7 | The most Flexible way of logging the return addresses of the subroutines is by using

registers

stacks

memory locations

none of the mentioned

Q8 | The private work space dedicated to a subroutine is called as

system heap

reserve

stack frame

allocation

Q9 | If the subroutine exceeds the private space allocated to it then the values are pushed onto

stack

system heap

reserve space

stack frame

Q10 | pointer is used to point to parameters passed or local parameters of the subroutine.

stack pointer

frame pointer

parameter register

log register

Q11 | The reserved memory or private space of the subroutine gets deallocated when

the stop instruction is executed by the routine

the pointer reaches the end of the space

when the routine’s return statement is executed

none of the mentioned

Q12 | The private space gets allocated to each subroutine when

the first statement of the routine is executed

when the context switch takes place

when the routine gets called

when the allocate instruction is executed

Q13 | the most suitable data structure used to store the return addresses in the case of nested subroutines.

heap

stack

queue

list

Q14 | In the case of nested subroutines, the stack top is always

the saved contents of the called sub routine

the saved contents of the calling sub routine

the return addresses of the called sub routine

none of the mentioned

Q15 | The stack frame for each subroutine is present in

main memory

system heap

processor stack

none of the mentioned

Q16 | The data structure suitable for scheduling processes is

list

heap

queue

stack

Q17 | The sub-routine service procedure is similar to that of the interrupt service routine in

method of context switch

returning

process execution

method of context switch & process execution

Q18 | In memory-mapped I/O

the i/o devices and the memory share the same address space

the i/o devices have a separate address space

the memory and i/o devices have an associated address space

a part of the memory is specifically set aside for the i/o operation

Q19 | The usual BUS structure used to connect the I/O devices is

star bus structure

multiple bus structure

single bus structure

node to node bus structure

Q20 | In intel’s IA-32 architecture there is a separate 16 bit address space for the I/O devices.

false

true

Q21 | The system is notified of a read or write operation by

appending an extra bit of the address

enabling the read or write bits of the devices

raising an appropriate interrupt signal

sending a special signal along the bus

Q22 | To overcome the lag in the operating speeds of the I/O device and the processor we use

buffer spaces

status flags

interrupt signals

exceptions

Q23 | The method of accessing the I/O devices by repeatedly checking the status flags is

program-controlled i/o

memory-mapped i/o

i/o mapped

none of the mentioned

Q24 | The method of synchronising the processor with the I/O device in which the device sends a signal when it is ready is?

exceptions

signal handling

interrupts

dma

Q25 | The interrupt-request line is a part of the

data line

control line

address line

none of the mentioned