parallel computing set 2 Detailed Explanation And More Example
MOST IMPORTANT computer mcq - 2 EXERCISES
The following question based on parallel computing topic of computer mcq
(a) It involves data sharing between more than two tasks, which are often specified as being members in a common group, or collective.
(b) It involves two tasks with one task acting as the sender/producer of data, and the other acting as the receiver/consumer.*
(c) It allows tasks to transfer data independently from one another.
(d) None of these
The correct answers to the above question in:
Answer: (b)
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Question : 1
Shared Memory is
a) A computer architecture where all processors have direct access to common physical memory
b) It refers to network based memory access for physical memory that is not common.
c) Parallel tasks typically need to exchange dat(A) There are several ways this can be accomplished, such as through, a shared memory bus or over a network, however the actual event of data exchange is commonly referred to as communications regardless of the method employe(D)
d) None of these
Answer »Answer: (a)
Question : 2
Data dependence is
a) Involves only those tasks executing a communication operation
b) It exists between program statements when the order of statement execution affects the results of the program.
c) It refers to the practice of distributing work among tasks so that all tasks are kept busy all of the time. It can be considered as minimization of task idle time.
d) None of these
Answer »Answer: (b)
Question : 3
Non-Uniform Memory Access (NUMA) is
a) Here all processors have equal access and access times to memory
b) Here if one processor updates a location in shared memory, all the other processors know about the update.
c) Here one SMP can directly access memory of another SMP and not all processors have equal access time to all memories
d) None of these
Answer »Answer: (c)
Question : 4
Collective communication
a) It involves data sharing between more than two tasks, which are often specified as being members in a common group, or collective.
b) It involves two tasks with one task acting as the sender/producer of data, and the other acting as the receiver/consumer.
c) It allows tasks to transfer data independently from one another.
d) None of these
Answer »Answer: (a)
Question : 5
In shared Memory
a) Changes in a memory location effected by one processor do not affect all other processors.
b) Changes in a memory location effected by one processor are visible to all other processors
c) Changes in a memory location effected by one processor are randomly visible to all other processors.
d) None of these
Answer »Answer: (b)
Question : 6
Parallel computing can include
a) Single computer with multiple processors
b) Arbitrary number of computers connected by a network
c) Combination of both A and B
d) None of these
Answer »Answer: (c)
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