OMG-OCRES-A300 by OMG Actual Free Exam Q&As

Question 1

When a policy object is associated with an ORB instance ("capsule"), which condition applies?

A. Policies associated with an object reference persist until that object reference is destroyed. B. Object references created using a policy override CANNOT be duplicated. C. Policy overrides associated with an object reference can be passed to an IOR. D. Policies associated with the capsule takes precedence over the policy set in the thread of execution.

Discussion 0

Correct Answer: A Vote an answer

Question 2

In RT-CORBA / Dynamic Scheduling, the fundamental abstraction of application execution is a _____.

A. Thread B. Schedulable Thread C. Distributable Thread D. Distributed Thread

Discussion 0

Correct Answer: C Vote an answer

Question 3

What happens when the Extensible Transport Framework Handle::add_input operation fails?

A. The Connection instance involved is destroyed. B. A CORBA::BAD_INV_ORDER exception is raised. C. A CORBA::INTERNAL exception is raised. D. The behavior is undefined and therefore implementation specific.

Discussion 0

Correct Answer: A Vote an answer

Question 4

Which listener is NOT defined in the DLRL?

A. CacheListener B. ObjectListener C. ContractListener D. SelectionListener

Discussion 0

Correct Answer: C Vote an answer

Question 5

What is the scope of RT-CORBA / Dynamic Scheduling?

A. It defines how different scheduling disciplines may interoperate. B. It specifies interfaces that will allow the development of scheduler-independent applications. C. It defines mapping rules from scheduling parameters to RTOS primitives. D. It defines a set of ORB/scheduler interfaces that will allow the development of ORB-independent
schedulers.

Discussion 0

Correct Answer: D Vote an answer

Question 6

For multi-valued attributes, the DLRL metamodel defines which two of the following classes? (Choose
two.)

A. ListBase B. VectorBase C. MapBase D. TreeBase

Discussion 0

Correct Answer: A,C Vote an answer

Question 7

Which two statements about RT-CORBA and CORBA Core compliance are true? (Choose two.)

A. An ORB that conforms to Dynamic Scheduling must implement the fixed priority scheduling of the
Real-time CORBA Base Architecture when no scheduler is installed B. An ORB implementation compliant with the Real-time CORBA Base Architecture must implement all of
Real-time CORBA (chapters 1, 2 and 3). C. An ORB that conforms to Dynamic Scheduling must raise the NO_SCHEDULER exception when no
scheduler is installed. D. Dynamic Scheduling, as defined in the Chapter 3, Dynamic Scheduling", is a separate and optional
compliance point. E. When no scheduler is installed, the scheduling behavior of an ORB that conforms to Dynamic
Scheduling is unspecified. F. Since CORBA 2.4, compliance with the Real-time CORBA Base Architecture is necessary for
compliance to CORBA Core.

Discussion 0

Correct Answer: A,D Vote an answer

Question 8

Which statement is true about the Real Time CORBA Mutex Interface?

A. If the try_lock() operation does get the lock within the max_wait time period, it returns TRUE at which
time the user must call the lock() operation. B. If the mutex is locked, subsequent lock() calls will return with no action. C. The create_mutex operation creates the object in the locked state. D. The mutex returned by create_mutex must have the same priority inheritance properties as those used
by the ORB to protect resources.

Discussion 0

Correct Answer: D Vote an answer

Question 9

The Lightweight CCM profile removes support for ______.

A. executor B. compositor C. connector D. locator

Discussion 0

Correct Answer: D Vote an answer

Question 10

Which is a characteristic of a Connection object presented to the message layer by a plugged in
transport?

A. Un-reliable B. Multithreaded C. Bi-directional D. Oneway

Discussion 0

Correct Answer: C Vote an answer

Question 11

Which two are valid distributable thread operations? (Choose two.)

A. begin_scheduling_segment B. update_scheduling_segment C. cancel_scheduling_segment D. resume_scheduling_segment E. suspend_scheduling_segment

Discussion 0

Correct Answer: A,B Vote an answer

OMG-Certified Real-time and Embedded Systems Specialist Advanced - OMG-OCRES-A300 Exam Practice Test