OMG-OCRES-A300 Exam Training Practice Tests (OMG-Certified Real-time and Embedded Systems Specialist Advanced)]

Question 1

What is the purpose of the DLRL ObjectListener?

A. It notifies applications of the creation, modification, or deletion of objects. B. It intercepts the update operation on an Object. C. It notifies applications whenever an object in the Cache is accessed. D. It indicates to the DLRL middleware that some attributes of an object have changed and it therefore
should be flushed to the DCPS layer.

Correct Answer: A

Question 2

What are two characteristics of manual transformation in the MDA? (Choose two.)

A. It is a radical departure from traditional software design methods. B. It requires a record of the manual transformation. C. It makes an explicit distinction between a platform independent model and the transformed platform
specific model. D. It adds very little to standard software design practices in use today, but provides a method to
incorporate legacy software under the MDA name.

Correct Answer: B,C

Question 3

Which two assumptions are true in the DLRL requested functions? (Choose two.)

A. The application is made aware of changes on the objects it has through a listener. B. By default, the cache of objects is updated fully transparently with incoming updates. C. The application has NO control over the mix of incoming updates and of modifications it performs. D. A subscription will be made on the fly to reach an object that is an instance of a class for which no
subscription has been made.

Correct Answer: A,B

Question 4

For which schedule is the task priority computed using both the tasks execution time and its deadline?

A. Shortest Job First B. Shortest Remaining Time C. Deadline Monotonic D. Least Laxity First

Correct Answer: D

Question 5

When defining a new Policy that is passed as an argument to POA::create_POA, which piece of
information must be provided?

A. a description of any incompatibilities with server side policies B. an indication that the POA policy implies changes to the object reference, denoted by the marking
"server-exposed" C. conditions under which the policy can be over-ridden or modified on the client side D. a description of incompatibilities with existing POA policies

Correct Answer: D

Question 6

In the CORBA Component Model, the container and the component interact via which two interfaces?
(Choose two.)

A. Event B. Internal C. External D. Callback

Correct Answer: B,D

Question 7

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

A. The create_mutex operation creates the object in the locked state. B. If the mutex is locked, subsequent lock() calls will return with no action. C. The mutex returned by create_mutex must have the same priority inheritance properties as those used
by the ORB to protect resources. D. 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.

Correct Answer: C

Question 8

Which two object-oriented concepts CANNOT be expressed using DLRL? (Choose two.)

A. object relationships B. object inheritance C. method overloading D. multiple inheritance E. encapsulation of plain attributes

Correct Answer: C,D

Question 9

Which statement is true when domains are modeled using the Profile for SPT?

A. Resources are modeled as servers with passive resources being the usual servers in performance
models that are acquired and released during scenarios, and have holding times. B. Scenario steps are the elements of scenarios, and are joined in a sequence, with
predecessor-successor relationships that may include forks, joins, and loops. C. In performance-related models, each scenario is executed by a job class or user class which is
identical to other UML Classes. D. Performance measures for a system include only the combined waiting times, execution demands and
response time for the resources.

Correct Answer: B

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