OMG UM0-401 OCRES™ Exam Practice Test Instant Access

Question 1

Which classes are DDS Entities? Select TWO.

AWait Set

BPublisher

CData Reader

DSubscriber Listener

EContent Filtered Topic

Answer : B, C

Question 2

Which statement is true about CORBA/e interoperability?

AIndividual systems cannot mix CORBA/e and non-CORBA/e ORBs.

BCORBA/e systems can successfully interoperate with non-CORBA/e CORBA systems.

CApplications written for a CORBA/e ORB will run without modification on a non-CORBA/e ORB.

DCORBA/e ORBs in a system with non-CORBA/e ORBs will cause the entire system to behave in a real-time manner.

Answer : B

Question 3

Which two of these techniques would successfully avoid mutual exclusion deadlocks? (Choose two.)

ASet up a circular dependency of tasks and resources

BAllow a task's use of a resource to be pre-empted

CRequire tasks to acquire and use only one resource at a time

DRequire tasks to acquire resources in order of the tasks' priorities

Answer : B, C

Question 4

A Meta model is a-------

Aset of UML templates for drawing system models

Bspecial kind of model that specifies a modeling language

Ccollection of stereotypes and classes that define a set of architectural patterns

Dconceptual pattern for a class of application systems

Answer : B

Question 5

In the Lightweight Time Service, a value of type "TimeT" indicates-------------

Athe number of seconds (tv_sec) and nanoseconds (tv_nsec) passed since the beginning of the POSIX epoch

Ba relative time, with the 'tv_sec' field containing the number of elapsed seconds, and 'tv_usec' containing elapsed microseconds

Ca 64-bit value of relative elapsed or absolute time, in units of 100 nanoseconds

Dthe number of seconds passed since midnight, January 1, 1970, UTC

Answer : C

Question 6

In RT CORBA, CORBA Priorities-----------------

Acan be set from -32767 to 32767 using a signed short

Bcan be mapped to C, C++,Ada, and Java using IDL interfaces

Craise a BAD_PARAM system exception when the priority mapping fails

Dare mapped to native priorities usingto_native and to_CORBA operations

Answer : D

Question 7

What two specific profiles does the CORBA/e specification define? (Choose two.)

AMicro Profile

BCompact Profile

CFault Tolerant Profile

DHigh Performance Profile

ECORBA Component Model Profile

FReal Time (Static Scheduling) Profile

Answer : A, B

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