Prepare with OMG OMG-OCRES-A300 exam practice material, pass for sure
Updated: Aug 17, 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) |
| Real Exam Qty: | 90 |
| Passing Score: | Approx. 63% (57/90) |
| Certificate Validity Period: | Lifetime (for the exam version taken) |
| Exam Price: | USD 200 - 210 |
| Exam Format: | Multiple-choice, Multi-response, Includes text and UML diagrams |
| Related Certifications: | OMG-Certified UML Professional 2 (OCUP 2) Fundamental OMG-Certified Real-time and Embedded Systems Specialist (OCRES) Intermediate |
| Available Languages: | English, Japanese (limited availability) |
| Exam Duration: | 90 (120 for non-English administrations) |
| 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: Real-Time Software Engineering | 20% | - Schedulability and timing analysis - Real-time system principles - Fault tolerance and reliability |
| Topic 2: Data Distribution Service (DDS) | 20% | - Data Local Reconstruction Layer (DLRL) - DCPS core model |
| Topic 3: Lightweight CORBA Component Model (LwCCM) | 15% | - Deployment and Configuration specification - Component model and deployment |
| Topic 4: MDA Guide & Modeling Standards | 20% | - UML Profile for Quality of Service and Fault Tolerance (QoS/FT) - UML Profile for Schedulability, Performance and Time (SPT) - PIM, PSM, and platform modeling - MDA architecture and transformations |
| Topic 5: Real-Time CORBA & CORBA/e | 25% | - Real-time CORBA with dynamic scheduling - CORBA for Embedded (CORBA/e) specifications - Extensible Transport Framework |
OMG-Certified Real-time and Embedded Systems Specialist Advanced Sample Questions:
1. For which schedule is the task priority computed using both the tasks execution time and its deadline?
A) Shortest Job First
B) Least Laxity First
C) Deadline Monotonic
D) Shortest Remaining Time
2. Which statement is true about the RTCORBA::RTORB Interface?
A) The RTCORBA::RTORB Interface is derived from CORBA::ORB.
B) There can be multiple instances of RTCORBA::RTORB per instance of CORBA::OR
C) The RTCORBA::RTORB Interface is expressed in pseudo IDL, for which inheritance is defined.
D) The object reference for the RTORB is obtained by calling ORB::resolve_initial_references with the
ObjectId RTORB.
3. For multi-valued attributes, the DLRL metamodel defines which two of the following classes? (Choose
two.)
A) MapBase
B) VectorBase
C) TreeBase
D) ListBase
4. The Lightweight CCM profile removes support for which feature?
A) component factory
B) home finder
C) service components
D) home inheritance
5. Which FT Group Property is used to track the state of a replica where no other replica exists?
A) LocationMonitoring
B) InfrastructureLevelChecking
C) PushMonitoringStyle
D) ApplicationControlledConsistency
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: D | Question # 3 Answer: A,D | Question # 4 Answer: B | Question # 5 Answer: A |
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