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問題1

RTOS benchmarking is used to--------------

A. determine the optimal scheduling for an application running on a particular RTOS

B. measure the RTOS overall API overhead

C. measure the RTOS features most suitable for an application that must meet real-time requirements

D. define the RTOS worst case response time for each interface

正確答案: C

問題2

Which two of these can be configured using Server Side RT CORBA policies? (Choose two.)

A. definition of priority-banded sets of connection

B. creation of non-multiplexed connections to a server

C. priority model

D. thread configuration through thread pools

正確答案: C,D

問題3

When using Priority Banded Connections, which set of rules apply?

A. no priority must be covered more than once by a given set of Priority Bands

B. Priority Band must contain a range of priority values

C. complete set of Priority Bands must form a contiguous range of priorities

D. entire range of CORBA Priority values must be covered by a given set of Priority Bands

正確答案: A

問題4

Which of these QoS is "changeable"?

A. PRESENTATION

B. OWNERSHIP

C. PARTITION

D. DURABILITY

正確答案: C

問題5

Which of these classes extends the Entity class?

A. QosPolicy

B. Data Instance

C. Listener

D. Topic

正確答案: D

問題6

Choose the three valid return codes for class operations at the PIM level.

A. INVALID_KEY

B. NOT_ENABLED

C. ERROR

D. OUT_OF_RESOURCES

正確答案: B,C,D

問題7

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.)

A. The priority of the lowest priority task which uses the resource

B. The priority of the higher priority task being blocked by the lower priority one

C. The priority of the highest priority task

D. The ceiling priority of the resource on which the lower priority task is blocked

正確答案: B,D

問題8

What is the base class of stereotype <<QoSContext>>?

A. Classifier

B. Package

C. Template

D. Category

正確答案: A

問題9

Which one of these items is a valid value for the LIVELINESS QoS policy?

A. MANUAL_BY_SUBSCRIBER

B. MANUAL_BY_PARTICIPANT

C. MANUAL_BY_LISTENER

D. MANUAL_BY_PUBLISHER

正確答案: B

問題10

Which two of these are standard extensions provided by IIOP to support the mechanisms prescribed in Real-time CORBA? (Choose TWO.)

A. Service Contexts

B. Bi-directional IIOP

C. LOCATION_FORWARD

D. IOR Tagged Components

正確答案: A,D

問題11

Of these classes, which three are part of the QoS meta-model? (Choose three.)

A. QoSParameter

B. QoSAssessment

C. QosConstraint

D. QosDimension

E. QoSCharacteristic

正確答案: C,D,E

問題12

Which two statements apply to interface inheritance? (Choose two.)

A. Inherited interface elements can berescoped.

B. Ambiguous references to base interface elements are tolerated.

C. Interfaces are derived from one or more base interfaces.

D. Direct base interfaces can be associated with a derived interface more than once.

正確答案: A,C

問題13

A general QoS modeling language must provide support for the specification of _____.

A. QoS Dimension

B. QoS Analysis

C. QoS Adaptation and Monitoring

D. QoS Levels of Instantiation

正確答案: C

問題14

A scheduler runs tasks to completion instead of pre-empting tasks by time slicing or according to priority. What two actions will occur? (Choose two.)

A. Maximize the number of completed tasks per unit of time

B. Minimize the task scheduling and context switching overheads

C. Share the processor time fairly among ready tasks

D. Honor the commitment made to complete the task once it has begun executing

正確答案: B,D

問題15

Which two are valid dimensions of the QoSCharacteristic 'availability'? (Choose two.)

A. time-between-failures

B. failure-reason

C. cost-to-repair

D. time-to-repair

正確答案: A,D

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