Embedded And Real Time System Set 9 MCQs

Q1 | As of 2000, the reference system to find the performance of a system is

ultra sparc 10
sun sparc
sun ii
none of the mentioned

Answer: ultra sparc 10

Explaination:
in spec system of measuring a system’s performance, a system is used as a reference against which other systems are compared and performance is determined.

Q2 | When Performing a looping operation, the instruction gets stored in the

registers
cache
system heap
system stack

Answer: cache

Explaination:
when a looping or branching operation is carried out the offset value is stored in the cache along with the data.

Q3 | The average number of steps taken to execute the set of instructions can be made to be less than one by following

isa
pipe-lining
super-scaling
sequential

Answer: super-scaling

Explaination:
the number of steps required to execute a given set of instructions is sufficiently reduced by using super-scaling. in this method, a set of instructions are grouped together and are processed.

Q4 | If a processor clock is rated as 1250 million cycles per second, then its clock period is

1.9 * 10-10 sec
1.6 * 10-9 sec
1.25 * 10-10 sec
8 * 10-10 sec

Answer: 8 * 10-10 sec

Explaination:
none.

Q5 | If the instruction, Add R1, R2, R3 is executed in a system that is pipe-lined, then the value of S is (Where S is a term of the Basic performance equation)?

3
~2
~1
6

Answer: ~1

Explaination:
s is the number of steps required to execute the instructions.

Q6 | CISC stands for

complete instruction sequential compilation
computer integrated sequential compiler
complex instruction set computer
complex instruction sequential compilation

Answer: complex instruction set computer

Explaination:
cisc is a type of system architecture where complex instructions are grouped together and executed to improve system performance.

Q7 | In real time operating system

shorter duration job has higher priority
longer duration job has higher priority
priority does not depend on the duration of the job
none of the mentioned

Answer: shorter duration job has higher priority

Explaination:
none.

Q8 | Which of the following allows the reuse of the software and the hardware components?

platform based design
memory design
peripheral design
input design

Answer: platform based design

Explaination:
the platform design allows the reuse of the software and the hardware components in order to cope with the increasing complexity in the design of embedded systems.

Q9 | Which of the following is the design in which both the hardware and software are considered during the design?

platform based design
memory based design
software/hardware codesign
peripheral design

Answer: software/hardware codesign

Explaination:
the software/hardware codesign is the one which having both

Q10 | What does API stand for?

address programming interface
application programming interface
accessing peripheral through interface
address programming interface

Answer: application programming interface

Explaination:
the platform-based design helps in the reuse of both the hardware and the software components. the application programming interface helps in extending the platform towards software applications.

Q11 | Which activity is concerned with identifying the task at the final embedded systems?

high-level transformation
compilation
scheduling
task-level concurrency management

Answer: task-level concurrency management

Explaination:
there are many design activities associated with the platforms in the embedded system and one such is the task- level concurrency management which helps in identifying the task that needed to be present in the final embedded systems.

Q12 | In which design activity, the loops are interchangeable?

compilation
scheduling
high-level transformation
hardware/software partitioning

Answer: high-level transformation

Explaination:
the high-level transformation is responsible for the high optimizing transformations, that is, the loops can be interchanged so that the accesses to array components become more local.

Q13 | Which design activity helps in the transformation of the floating point arithmetic to fixed point arithmetic?

high-level transformation
scheduling
compilation
task-level concurrency management

Answer: high-level transformation

Explaination:
the high-level transformation are responsible for the high optimizing transformations, that is, for the loop interchanging and the transformation of the floating point arithmetic to the fixed point arithmetic can be done by the high-level transformation.

Q14 | Which design activity is in charge of mapping operations to hardware?

scheduling
high-level transformation
hardware/software partitioning
compilation

Answer: hardware/software partitioning

Explaination:
the hardware/software partitioning is the activity which is in charge of mapping operations to the software or to the hardware.

Q15 | Which of the following is approximated during hardware/software partitioning, during task-level concurrency management?

scheduling
compilation
task-level concurrency management
high-level transformation

Answer: scheduling

Explaination:
the scheduling is performed in several contexts. it should be approximated with the other design activities like the compilation, hardware/software partitioning, and task-level concurrency management. the scheduling should be precise for the final code.

Q16 | Which of the following is a process of analyzing the set of possible designs?

design space exploration
scheduling
compilation
hardware/software partitioning

Answer: design space exploration

Explaination:
the design space exploration is the process of analyzing the set of designs and the design which meet the specification is selected.

Q17 | Which of the following is a meet-in-the- middle approach?

peripheral based design
platform based design
memory based design
processor design

Answer: platform based design

Explaination:
the platform is an abstraction layer which covers many possible refinements to a lower level and is mainly follows a meet-in-the-middle approach.