UM0-401 Exam Questions and Answers | Exam-Dumps (Page: 2)

QUESTION: 9

The priority of a runnable task blocked on a resource request is temporarily changed to be the same as the priority of another task.
Which two phrases could describe the new priority? (Choose two.)

The priority of the highest priority task
The priority of the lowest priority task which uses the resource
The priority of the higher priority task being blocked by the lower priority one
The ceiling priority of the resource on which the lower priority task is blocked

Answer(s): C,D

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QUESTION: 10

What two results occur by changing priorities dynamically? (Choose two.)

Reduces overhead
Increases overhead
May starve lower priority tasks
Avoids the need for priority queues

Answer(s): B,C

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QUESTION: 11

A representative benchmark differs from a synthetic benchmark in that a-------------

representative benchmark models a representative ideal application
synthetic benchmark precisely predicts specific application performance
representative benchmark models a real application's execution characteristics
synthetic benchmark must be developed by the same team that will build the application

Answer(s): C

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QUESTION: 12

Network protocol models are described as layers that--------------

permit separation of concerns of lower layers (e.g., hardware) from higher layers (e.g., application)
add increasing efficiency to higher layers (e.g., application) than lower layers (e.g., hardware)
are highly consistent in number and function among different protocols
provide efficient application access to network hardware addresses

Answer(s): A

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QUESTION: 13

The primary requirement for an RTOS is to--------------

maximize application speed and minimize memory utilization
enable fast control and data transfer to critical system devices
enable the application to meet both its functional and temporal requrements
permit the application to efficiently access all resources (e.g., I/O and memory)

Answer(s): C

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