OMG UM0-401 OCRESâ„¢ Exam Questions Instant Access

Question 1

The Lightweight Time Service Periodic interface------------

Aassumes that a periodic object is always 'ready to execute'

Bexecutes thedo_work operation invoked by the Controller

Cinitiates periodic execution when using an unsigned integerparams set to 0

Ddoes not require that a periodic object be registered with a clock beforehand

Answer : B

Question 2

What time scales does the Lightweight Time Service support? (Choose two.)

AEphemeris time

BGlobal Positioning System Time

CTerrestrial Dynamical Time

DInternational Atomic Time

Answer : B, D

Question 3

What is the maximum RT CORBA priority value______________?

See Below Explanation:

Answer : A

Question 4

In the Dynamic Usage Model, the usage of resources is represented by a scenario instance. What is an ordered series of steps called?

AAction

BAction Item

CAction Instance

DAction Execution

Answer : D

Question 5

Which scenarios could cause a Data Reader to get a sample with instance_state NOT_ALIVE_NO_WRITERS? Select THREE

Adeletion of a matched Data Writer

Bcall towrite() on a matched Data Writer

Ccall todispose() on a matched Data Writer

Dcall tounregister_instance() on a matched Data Writer

Eloss of communications (e.g. network outage) with a matched Data Writer

Answer : A, D, E

Question 6

An object reference is----------------

Aa server's response to a client

Ba client's call to a service object

Can operation that denotes the primitive service

Da value that reliably denotes a particular object

Answer : D

Question 7

Which two statements about static memory allocation are true? (Choose two.)

AGarbage collection is not required.

BMemory fragmentation does not occur.

CMemory allocation units are always the same fixed size.

DTasks must inform the run-time (e.g., operating system) the total amount of memory they will need before they begin requesting memory.

Answer : A, B

OMG Certified Real-time and Embedded Specialistâ„¢ UM0-401 OCRESâ„¢ Exam Questions