Omg OCRES-Intermediate Exam (UM0-401) Free Practice Test

Question 1

Which statement is true about one of the Object Request Broker foundational concepts?

A. Brokers provide service by passing on parameters to specific function calls.

B. Interaction occurs when a client makes a request.

C. There is a data-centric perspective of the model.

D. A client is an identifiable, encapsulated entity that provides one or more services.

Correct Answer: B

Question 2

In the Lightweight Event Service the interactions between consumers and the event channel is one where consumers _____.

A. share a connection to an Event Channel through a common Proxy Push Supplier

B. connect to an Event Channel via a Proxy Push Supplier

C. receive event data from a supplier where the data is passed as a character string

D. use the Consumer Admin interface to access any subset of Event Service operations

Correct Answer: B

Question 3

Click on Exhibit. Given this configuration, select the statement that is true.

A. The QoS of Data Writer 1 is compatible with that of Data Reader 1

B. The QoS of Data Writer 1 is compatible with that of Data Reader 2

C. The QoS of Data Writer 2 is compatible with that of Data Reader 2

D. The QoS of Data Writer 2 is compatible with that of Data Reader 1

Correct Answer: B

Question 4

Which class acts as the factory used to construct Data Reader objects?

A. Subscriber

B. Domain Participant

C. Publisher

D. Domain Participant Factory

Correct Answer: A

Question 5

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

A. QoS Dimension

B. QoS Adaptation and Monitoring

C. QoS Levels of Instantiation

D. QoS Analysis

Correct Answer: B

Question 6

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

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

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

C. Priority Band must contain a range of priority values

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

Correct Answer: D

Question 7

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

A. LOCATION_FORWARD

B. Bi-directional IIOP

C. Service Contexts

D. IOR Tagged Components

Correct Answer: C,D

Question 8

Which of the following can be controlled using RT CORBA? (Choose two)

A. thread pools

B. memory addresses

C. number of CORBA objects

D. transport connections

Correct Answer: A,D

Question 9

For the Server Declared Priority Model, which statements are true? (Choose two)

A. The value ofserver_priority is published in its object reference.

B. The value ofserver_priority is passed in each reply message.

C. The value ofserver_priority cannot be overridden.

D. The value ofserver_priority indicates the priority that will be assigned by default to CORBA objects managed by the POA.

Correct Answer: A,D

Question 10

Which two of these correctly characterize "end to end" predictability in a fixed priority CORBA system? (Choose TWO)

A. bounding the duration of memory access times

B. respecting thread priorities between CORBA clients and servers

C. minimizing the latencies of operation invocations

D. bounding the duration of thread priority inversions during end-to-end processing

Correct Answer: B,D

Question 11

POSIX ----------------------

A. is the same as UNIX

B. is not designed for real-time systems

C. does not support asynchronous I/O

D. is an operating system interface standard

Correct Answer: D

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OMG Omg OCRES-Intermediate (UM0-401) Free Practice Test