Top 150+ Solved Embedded and Real Time System MCQ Questions Answer
Q. For real time operating systems, interrupt latency should be
a. minimal
b. maximum
c. zero
d. dependent on the scheduling
Q. In rate monotonic scheduling
a. shorter duration job has higher priority
b. longer duration job has higher priority
c. priority does not depend on the duration of the job
d. none of the mentioned
Q. In which scheduling certain amount of CPU time is allocated to each process?
a. earliest deadline first scheduling
b. proportional share scheduling
c. equal share scheduling
d. none of the mentioned
Q. The problem of priority inversion can be solved by
a. priority inheritance protocol
b. priority inversion protocol
c. both priority inheritance and inversion protocol
d. none of the mentioned
Q. Time duration required for scheduling dispatcher to stop one process and start another is known as
a. process latency
b. dispatch latency
c. execution latency
d. interrupt latency
Q. Time required to synchronous switch from the context of one thread to the context of another thread is called?
a. threads fly-back time
b. jitter
c. context switch time
d. none of the mentioned
Q. VxWorks is centered around
a. wind microkernel
b. linux kernel
c. unix kernel
d. none of the mentioned
Q. Message passing system allows processes to
a. communicate with one another without resorting to shared data
b. communicate with one another by resorting to shared data
c. share data
d. name the recipient or sender of the message
Q. Which of the following two operations are provided by the IPC facility?
a. write & delete message
b. delete & receive message
c. send & delete message
d. receive & send message
Q. Messages sent by a process
a. have to be of a fixed size
b. have to be a variable size
c. can be fixed or variable sized
d. none of the mentioned
Q. The link between two processes P and Q to send and receive messages is called
a. communication link
b. message-passing link
c. synchronization link
d. all of the mentioned
Q. Which of the following are TRUE for direct communication?
a. a communication link can be associated with n number of process(n = max. number of processes supported by system)
b. a communication link can be associated with exactly two processes
c. exactly n/2 links exist between each pair of processes(n = max. number of processes supported by system)
d. exactly two link exists between each pair of processes
Q. In indirect communication between processes P and Q
a. there is another process r to handle and pass on the messages between p and q
b. there is another machine between the two processes to help communication
c. there is a mailbox to help communication between p and q
d. none of the mentioned
Q. In the non blocking send
a. the sending process keeps sending until the message is received
b. the sending process sends the message and resumes operation
c. the sending process keeps sending until it receives a message
d. none of the mentioned