Study with OMG-OCRES-A300 Actual Test Questions
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Updated: Oct 21, 2026
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OMG OMG-OCRES-A300 Exam Overview:
| Certification Vendor: | OMG (Object Management Group) |
|---|---|
| Exam Name: | OMG-Certified Real-time and Embedded Systems Specialist Advanced Exam |
| Exam Number: | OMG-OCRES-A300 (also known as UM0-411) |
| Certificate Validity Period: | Lifetime (for the exam version taken) |
| Related Certifications: | OMG-Certified Real-time and Embedded Systems Specialist (OCRES) Intermediate OMG-Certified UML Professional 2 (OCUP 2) Fundamental |
| Exam Duration: | 90 (120 for non-English administrations) |
| Available Languages: | Japanese (limited availability), English |
| Passing Score: | Approx. 63% (57/90) |
| Exam Price: | USD 200 - 210 |
| Exam Format: | Multi-response, Multiple-choice, Includes text and UML diagrams |
| Real Exam Qty: | 90 |
| Recommended Training: | OMG OCRES Official Resources Software Engineering for Real-time Systems (Textbook) |
| Exam Registration: | Pearson VUE OMG Exam Registration |
| Sample Questions: | OMG OMG-OCRES-A300 Sample Questions |
| Exam Way: | Computer-Based Testing (CBT) at Pearson VUE authorized centers |
| Pre Condition: | Pass OCUP 2 Fundamental and OCRES Intermediate exams |
| Official Syllabus URL: | https://www.omg.org/ocres/exam-info.htm |
OMG OMG-OCRES-A300 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: MDA Guide & Modeling Standards | 20% | - UML Profile for Schedulability, Performance and Time (SPT) - PIM, PSM, and platform modeling - MDA architecture and transformations - UML Profile for Quality of Service and Fault Tolerance (QoS/FT) |
| Topic 2: Data Distribution Service (DDS) | 20% | - DCPS core model - Data Local Reconstruction Layer (DLRL) |
| Topic 3: Lightweight CORBA Component Model (LwCCM) | 15% | - Deployment and Configuration specification - Component model and deployment |
| Topic 4: Real-Time CORBA & CORBA/e | 25% | - Extensible Transport Framework - CORBA for Embedded (CORBA/e) specifications - Real-time CORBA with dynamic scheduling |
| Topic 5: Real-Time Software Engineering | 20% | - Real-time system principles - Schedulability and timing analysis - Fault tolerance and reliability |
OMG-Certified Real-time and Embedded Systems Specialist Advanced Sample Questions:
Which statement is true about the feasibility of a Rate Monotonic Schedule?
- A. It can be determined only for the highest priority task.
- B. It CANNOT be determined precisely.
- C. It can be determined for any set of task deadlines with bounded execution times.
- D. It can be determined for any number of periodic tasks with bounded execution times.
Correct Answer: D 🗳️
Which statement is true about the thread reentrant policy of the Extensible Transport Framework
Connection interface?
- A. Multiple ORB threads may call read() simultaneously on the same Connection object.
- B. Multiple ORB threads may call write() simultaneously on the same Connection object at the same time.
- C. All operations on a Connection object instance can only be invoked from within a single ORB thread.
- D. ORBs may only call read() from one single thread at a time on the same Connection object.
Correct Answer: D 🗳️
The UML profile for Modeling QoS and Fault Tolerance provides which model as one way to perform a
risk assessment?
- A. Risk Mitigation Model
- B. Enterprise Analysis Model
- C. Situational Model
- D. Unwanted Incident Model
Correct Answer: D 🗳️
The PSM for CCM of the Deployment and Configuration specification requires conformant
implementations of the RepositoryManager and NodeManager interfaces to support what means for
accessing artifacts?
- A. the secure file copy protocol (SCP)
- B. the FileManager interface
- C. the Hypertext Transfer Protocol (HTTP)
- D. the File Transfer Protocol (FTP)
Correct Answer: C 🗳️
What is the primary reason for doing performance engineering?
- A. to minimize development risks
- B. to assess computational complexity and efficiency
- C. to predict response time and interrupt latency
- D. to minimize the cost of resources (e.g., memory, processors, I/O)
Correct Answer: A 🗳️
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