PDF Version DemoThe OMG-Certified Real-time and Embedded Systems Specialist Advanced exam has a reputation for breadth, and many candidates underestimate how much ground it covers. Getcertkey closes those gaps with 180 practice questions that reflect the style and difficulty you can expect in 2026.
OMG OMG-OCRES-A300 Exam Overview:
| Certification Vendor: | Object Management Group (OMG) |
|---|---|
| Exam Name: | OMG-Certified Real-time and Embedded Systems Specialist Advanced Exam |
| Exam Number: | OMG-OCRES-A300 |
| Related Certifications: | OMG Certified Real-time and Embedded Systems Specialist Intermediate OMG Certified UML Professional 2 (OCUP 2) Foundation |
| Exam Duration: | 120 minutes |
| Real Exam Qty: | 90 |
| Available Languages: | Japanese, English |
| Exam Format: | Multiple Choice |
| Sample Questions: |  |
| Exam Way: | Delivered through Pearson VUE authorized testing centers; available worldwide in English and in Japanese through the regional OMG/UTI program. |
| Pre Condition: | OMG Certified UML Professional 2 (OCUP 2) Foundation certification is the prerequisite for the OCRES Advanced certification. |
| Official Syllabus URL: | https://www.omg.org/ocres/exam-info.htm |
OMG OMG-OCRES-A300 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Advanced Real-time CORBA | - Real-time CORBA advanced capabilities
|
| Topic 2: Advanced UML Modeling for Real-time and Embedded Systems | - Advanced UML profiles for real-time systems
|
| Topic 3: Data Distribution Service (DDS) | - Advanced DDS specifications
|
| Topic 4: Real-time Software Engineering | - Software engineering principles
|
| Topic 5: Deployment and Configuration | - Deployment standards
|
Common Questions About the OMG OMG-OCRES-A300 Exam
What is the OMG-Certified Real-time and Embedded Systems Specialist Advanced exam all about?
The OMG-OCRES-A300 exam is the official Object Management Group (OMG) exam behind the OMG Certification certification, validating the skills measured by the OMG-Certified Real-time and Embedded Systems Specialist Advanced credential. It sits at the Advanced level of the Object Management Group (OMG) certification program. It also connects to OMG Certified UML Professional 2 (OCUP 2) Foundation, OMG Certified Real-time and Embedded Systems Specialist Intermediate, so the knowledge you build here carries over to those tracks as well.
How many questions are on the OMG-OCRES-A300 exam, and how much time do I get?
The OMG-OCRES-A300 exam contains 90 questions to be completed within 120 minutes. Before exam day, divide the available time by the question count to work out a comfortable per-question pace, and mark any item that eats into it so you can return later instead of getting stuck. Timed sessions in the Getcertkey test engines make that pacing automatic — run at least two full-length mock exams under the clock so time pressure never becomes the reason you drop points.
Are there any prerequisites for the OMG-OCRES-A300 exam?
OMG Certified UML Professional 2 (OCUP 2) Foundation certification is the prerequisite for the OCRES Advanced certification. Requirements can change when Object Management Group (OMG) revises its certification program, so confirm the current eligibility rules on the official exam page before you register.
Can I try the OMG-OCRES-A300 practice questions before I buy?
Yes. Getcertkey provides a free OMG-OCRES-A300 PDF demo so you can review the question style and answer quality before purchasing. Every purchase also includes 365 days of free updates — if OMG revises the exam during that period, the updated material reaches you at no cost. Once the free-update year ends, you can extend your update service at a 50% discount.
What if I fail the OMG-OCRES-A300 exam, and how is my order delivered?
Every OMG-Certified Real-time and Embedded Systems Specialist Advanced purchase on Getcertkey is covered by a 100% money-back guarantee with clear conditions: if you take the corresponding exam within 60 days of your purchase and do not pass, you can claim a full refund by submitting a scanned copy of your exam enrollment slip and your official score report as a PDF within two days of the exam date; claims are processed within seven days of submission. The guarantee does not apply to exams taken within three days of purchase, to material that was downloaded but never used in an exam attempt, or to free products and expired orders, and the candidate name must match the payer name. If you would rather not take a refund, you can instead exchange your purchase for two free exam preparation products of equal value and keep the update service on your original product.
Delivery is instant: your download is sent to your email within one minute of payment, with no limit on how many computers you may install the material on. If nothing arrives within two hours, check your spam folder and contact customer service for help.
What topics are covered in the OMG-OCRES-A300 exam?
The OMG-Certified Real-time and Embedded Systems Specialist Advanced exam blueprint is organized into 5 domains. The first three are:
- Data Distribution Service (DDS)
- Advanced UML Modeling for Real-time and Embedded Systems
- Deployment and Configuration
For the complete domain-by-domain breakdown, scroll up to the full exam topics outline above and use it to plan how you distribute your study time.
OMG-Certified Real-time and Embedded Systems Specialist Advanced Sample Questions:
Question 1
MembershipStyle defines whether the membership of an object group is ______ or ______. (Choose
two.)
A. client-controlled
B. application-controlled
C. server-controlled
D. infrastructure-controlled
Question 2
Which two statements about RT-CORBA and CORBA Core compliance are true? (Choose two.)
A. An ORB that conforms to Dynamic Scheduling must raise the NO_SCHEDULER exception when no
scheduler is installed.
B. An ORB that conforms to Dynamic Scheduling must implement the fixed priority scheduling of the
Real-time CORBA Base Architecture when no scheduler is installed
C. When no scheduler is installed, the scheduling behavior of an ORB that conforms to Dynamic
Scheduling is unspecified.
D. An ORB implementation compliant with the Real-time CORBA Base Architecture must implement all of
Real-time CORBA (chapters 1, 2 and 3).
E. Dynamic Scheduling, as defined in the Chapter 3, Dynamic Scheduling", is a separate and optional
compliance point.
F. Since CORBA 2.4, compliance with the Real-time CORBA Base Architecture is necessary for
compliance to CORBA Core.
Question 3
Which two most accurately describe the added value of using MDA based transformations? (Choose
two.)
A. PIM/PSM distinction
B. Transformation verification
C. PIM/PSM template usage
D. Transformation automation
E. Transformation recording
Question 4
Which statement is true about the RTCORBA::RTORB Interface?
A. The RTCORBA::RTORB Interface is expressed in pseudo IDL, for which inheritance is defined.
B. There can be multiple instances of RTCORBA::RTORB per instance of CORBA::OR
C. The object reference for the RTORB is obtained by calling ORB::resolve_initial_references with the
ObjectId RTORB.
D. The RTCORBA::RTORB Interface is derived from CORBA::ORB.
Question 5
Which two are DLRL-generated classes for the DLRL application class named Foo which extends
ObjectRoot? (Choose two.)
A. FooQuery
B. FooFilter
C. FooList
D. FooCache
Solutions:
| Question 1 Answer: B,D | Question 2 Answer: B,E | Question 3 Answer: A,E | Question 4 Answer: C | Question 5 Answer: A,B |
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