Question.
IRIS Stands:
Iney Reward with Increased Service
Increased Raw with Increased Service
Increased Reward with Increased Service
None of these
The correct answer is: Increased Reward with Increased Service
Question
Which of these is true about an open loop system vs closed loop system:
Closed loop systems are comparatively cheaper as they require less components & design effort
Open loop system provides better control in the presence of environmental disturbance
An open loop system can be made closed loop by introducing and controlling
A kitchen toaster is a closed loop system
The correct answer is: An open loop system can be made closed loop by introducing and controlling
Question
RTOS is ________ in nature
timely
memory oriented
high cpacity
non-accurate
The correct answer is: timely
Question
True for a task vis-à-vis a process?
Tasks are complex compared to processes
Tasks and processes are one and the same thing
Processes can spawn threads but tasks cannot spawn tasks
Tasks represent only a single sequence of instructions
The correct answer is: Tasks represent only a single sequence of instructions
Question
Cheddar is written in
Perl
Ada
Python
The correct answer is: Ada
Question
In real time operating system
kernel is not required
all processes have the same priority
process scheduling can be done only once
a task must be serviced by its deadline period
The correct answer is: a task must be serviced by its deadline period
Question
A RTOS is characterised by
Select one:
1. Kernel is not required
2. Same priority for all processes
3. A task must be serviced on time or before time
4. Single time process scheduling
The correct answer is: A task must be serviced on time or before time
Question
In which scheduling certain amount of CPU time is allocated to each process?
Select one:
1. Equal share scheduling
2. None of the mentioned
3. Earliest deadline first scheduling
4. Proportional share scheduling
The correct answer is: Proportional share scheduling
Question
Time gap in-between release time of the job and the time when it completes is
Response Time
Turn around time
Rotation Time
The correct answer is: Response Time
Question
Hard real time operating system has ---------jitter than a soft real time operating system
less
more
equal
The correct answer is: less
Question
The family of processor used in Raspberry Pi is _______
Intel
Motorola
Broadcomm
ARM Correct
The correct answer is: ARM
Question
Tasks whose execution would begin randomly and within the interval of arrival times of consecutive tasks is known as
Periodic Task
Aperiodic Task
Sporadic Task
The correct answer is: Sporadic Task
Question
In the current market scenario, IoT captures the maximum share in which one of these?
Select one:
1. Home automation
2. Healthcare
3. Security
4. Industry
The correct answer is: Industry
Question
The time T between any two consecutive sensor reading is called
Sampling Period
Response Time
Turn around time
The correct answer is: Sampling Period
Question
Identify the odd one out:
Periodic Task
Aperiodic
Sporadic Tasks
Non-periodic
The correct answer is: Non-periodic
Question
Internet of Things (IoT) can be integrated with which of these separate domains:
Select one:
1. Big-data networks.
2. All
3. Cloud-based storage and computing.
4. Cyber Physical Systems.
Answer: All
Question
The problem of priority inversion can be solved by
priority inheritance protocol
priority inversion protocol
both (a) and (b)
none of the mentioned
The correct answer is: priority inheritance protocol
Question
In real time operating system
all processes have the same priority
a task must be serviced by its deadline period
process scheduling can be done only once
kernel is not required
The correct answer is: a task must be serviced by its deadline period
Question
What are the risks and challenges that we should be aware of when it comes to the Internet of Everything :
Privacy.
Security
Network congestion
Electricity consumption at the peaks
All of these
The correct answer is: Electricity consumption at the peaks
Question
Embedded system does not contain _________.
Sensors
Actuators
Microcontrollers
None of these
The correct answer is: None of these
Question
System which processes data instructions without any delay is classified as
real time system
online system
offline system
instruction system
The correct answer is: real time system
Question
The default language supported by Raspberry Pi board is _________.
Java
Python
C
C#
The correct answer is: Python
Question
Proportion of Real time and Non-real time tasks in a system
70%, 30%
50%,50%
60%,40%
80%, 20%
The correct answer is: 70%, 30%
Question
What is the top M2M acronym stands for:
The acronym M2M application stands for Machine to Man applications
The acronym M2M application stands for Mobile to Mobile applications
The acronym M2M application stands for Machine to Machine applications
None of these
The correct answer is: The acronym M2M application stands for Machine to Machine applications
Question.
The EDF scheduler uses ________ to order requests according to their deadlines.
Select one:
stack
disks
queue
none of the mentioned
Answer: queue
Question
System which processes data instructions without any delay is classified as
Select one:
1. Real time system
2. Offline system
3. Online system
4. Instruction system
1. Real time system
2. Offline system
3. Online system
4. Instruction system
Answer: Real time system
Question.
Use of robot by the car manufacturing companies is an example of
Select one:
machine controlled computers
network controlled computers
applicant controlled computers
user controlled computers
Answer: machine controlled computers
Question.
VxWorks is centered around
Select one:
wind microkernel
linux kernel
unix kernel
none of the mentioned
Answer: wind microkernel
Question.
EDF algorithm assigns priorities according to :
Select one:
periods
deadlines
burst times
none of the mentioned
Answer: deadlines
Question.
The priority of a real time task :
Select one:
must degrade over time
must not degrade over time
may degrade over time
none of the mentioned
Answer: must not degrade over time
Question.
What is jitter in Real-time terminology:
Select one:
Variation in a parameter. For example, variation in arrival rates, computation durations, or communication latencies.
An event with an arrival pattern that has a bounded minimum interarrival time with stochastic jitter.
The activation of a task such that it will be considered by the RTOS for execution on the CPU..
None of these
Answer: Variation in a parameter. For example, variation in arrival rates, computation durations, or communication latencies.
Question.
Scheduling of tasks is a very important consideration in RTOS. Which of the following best described the scheduling policy design:
Select one:
The scheduler must follow a pre-emptive policy
The scheduler must not use pre-emptive policy option
The scheduler must not only use pre-emptive policy options with the priority considerations.
The scheduler must not use pre-emptive policy option, but must employ priority consideration
Answer: The scheduler must not use pre-emptive policy option, but must employ priority consideration
Question.
Type of processor in which single task of a particular application is process is termed as
Select one:
real time processor
dedicated processor
applicant processor
one task processor
Answer: dedicated processor
Question.
Chose the statement with respect to RTOS.
Select one:
A real time operating system (RTOS) is an operating system that guarantees a certain capability within a specified time constraint.
An OS is a system program that provides an interface between application programs and the computer system (hardware)
The applications where dependability that a certain task will finish before a particular deadline is just as obtaining the correct results.
Besides meeting deadlines RTOS must also be able to respond predictably to unpredictable events and process multiple events concurrently.
all of above
Answer: all of above
Question
In rate monotonic scheduling algorithm
Select one:
1. Shorter duration job has higher priority
2. Priority does not depend on the duration of the job
3. Longer duration job has higher priority
4. None of the mentioned
Answer: Shorter duration job has higher priority
Question.
Keeping a task’s schedulability in mind, which way a task may be scheduled
Select one:
The task has a predetermined time after which it may be scheduled.
The task has a predetermined time before which it may be scheduled
The task has a predetermined time interval during which it must be scheduled any time.
The task start has a worst case delay estimate before which it must be scheduled
Answer: The task has a predetermined time interval during which it must be scheduled any time.
Question.
Time duration required for scheduling dispatcher to stop one process and start another is known as
Select one:
process latency
dispatch latency
execution latency
interrupt latency
Answer: dispatch latency
Question.
if jobs have unpredictable release times, a task is termed :
Select one:
aperiodic
sporadic
periodic.
None of these
Answer: aperiodic
Question.
Time required to synchronous switch from the context of one thread to the context of another thread is called
Select one:
threads fly-back time
jitter
context switch time
none of the mentioned
Answer: context switch time
Question.
Which of the following describes the RTOS design philiosophy best
Select one:
Maximize the throughput of the system
Maximize the processor utilization
Minimizing the response time
Response within certain stipulated time period
Answer: Minimizing the response time
Question.
Delay and Jitter :
Select one:
mean the same thing
are two completely different things
all of the mentioned
none of the mentioned
Answer: are two completely different things
Question.
IRIS Stand for :
Select one:
Increased Reward with Increased Service
Iney Reward with Increased Service
Increased Raw with Increased Service
None of these
Answer: Increased Reward with Increased Service
Question.
Which one of the following is a real time operating system?
Select one:
RTLinux
VxWorks
Windows CE
All of the mentioned
Answer: All of the mentioned
Question
IF jobs have unpredicted release times, then the jobs are called
Select one:
1. Periodic
2. Aperiodic
3. Regular
4. Sporadic
Answer: Aperiodic
Question.
In rate monotonic scheduling
Select one:
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
Question.
The major difference between a multimedia file and a regular file is :
Select one:
the size
the attributes
the ownership
the rate at which the file must be accessed
Answer: the ownership
Question.
Rate monotonic scheduling assumes that the :
Select one:
processing time of a periodic process is same for each CPU burst
processing time of a periodic process is different for each CPU burst
periods of all processes is the same
none of the mentioned
Answer: processing time of a periodic process is same for each CPU burst.
Question.
System which processes the data instructions without any delay is classified as
Select one:
online system
offline system
instruction system
real time system
Answer: real time system
Question.
Delay is :
Select one:
the time from when a request is first submitted to when the desired result is produced
the delay that occurs during playback of the stream
how the errors are handled during transmission and processing of continuous media
none of the mentioned
Answer: the time from when a request is first submitted to when the desired result is produced
Question.
Preemptive, priority based scheduling guarantees :
Select one:
hard real time functionality
soft real time functionality
protection of memory
none of the mentioned
Answer: soft real time functionality
Question.
Describe which of these scheduling policies is most suited for controlling a set of periodic tasks.
Select one:
FCFS
Least laxity first
Earliest dead line first
Rate monotonic policy schedule
Answer: FCFS
Question.
Designing of system take into considerations of
Select one:
hardware
communication system
operating system
all of above
Answer: all of above
Question.
RM Schedulable upper bound for a system with 4 tasks is
Select one:
0.66
0.95
0.44
0.76
Answer: 0.76 [This has been calculated using Utilization Bound]
Question.
Real time systems must have :
Select one:
preemptive kernels
non preemptive kernels
preemptive kernels or non preemptive kernels
neither preemptive nor non preemptive kernels
Answer: preemptive kernels
Question.
Consideration of storage, input and output devices are considered as requirement of
Select one:
hardware requirement
communication requirement
software requirement
process requirement
Answer: hardware requirement
Question.
If a set of processes cannot be scheduled by rate monotonic scheduling algorithm, then :
Select one:
they can be scheduled by EDF algorithm
they cannot be scheduled by EDF algorithm
they cannot be scheduled by any other algorithm
none of the mentioned
Answer: they cannot be scheduled by EDF algorithm
Hard real-time system is A
Select one:
system with deadline is very Hard
system with stringent deadlines
system whose deadline is very hard to determine
System whose deadline is not so hard to determine
Answer: system with stringent deadlines
Question.
Which one of the following is the characteristic of a multimedia system?
Select one:
high storage
high data rates
both high storage and high data rates
none of the mentioned
Answer: both high storage and high data rates
Question.
Identify which of these are real-time applications scenarios:
Select one:
An on-line bus ticketing system
Printing of annual report of a company’s annual report
Reconciling a day’s transactions in an account book of a small company
An aircrafts yaw control system
Answer: Printing of annual report of a company’s annual report
Question.
Hyper period of the following tasks T(e,p) {T1(3,6) T2(4,12)}
Select one:
6
4
12
2
Answer: 12
Question.
Slack time
Select one:
is the amount of time left after a job if the job was started now.
is the amount of time left before a job if the job was started now.
is the amount of time left from a job if the job was started now.
is the amount of time left required by a job if the job was started now.
Answer: is the amount of time left after a job if the job was started now
Question.
The delay that occur during the playback of a stream is called
Select one:
stream delay Incorrect
playback delay
jitter
event delay
Answer: jitter
Question
Hard real time operating system has ___ jitter than a soft real time operating system.
Select one:
1. More
2. Equal
3. None
4. Less
Answer: Less
Question
Which of the following is never a part of open loop control system
Select one:
1. Controller
2. Actuator
3. Error Detector
4. Sensor
Answer: Error Detector
Question
For real time operating systems, interrupt latency should be
Select one:
1. Dependent on the scheduling
2. Zero
3. Maximum
4. Minimal
Answer: Minimal
Question
Gyroscope is a sensor which measures
Select one:
1. Acceleration
2. Physical orientation
3. Velocity
4. Pressure
Answer: Physical orientation
