Open assessment · Intermediate

Object-Oriented Programming & Design

Object-oriented thinking in any mainstream language: the four pillars, SOLID, design patterns, modelling and code smells, plus one design problem written and ju

A Revquix assessment.

What this assessment tests

Object-oriented thinking in any mainstream language: the four pillars, SOLID, design patterns, modelling and code smells, plus one design problem written and judged.

Each sitting draws 45 questions at random from a larger pool, in 90 minutes, with a mix of easy, medium and hard items.

Who it is for

Students and early-career professionals who want a clear record of this skill
Anyone preparing to demonstrate this knowledge to an employer

What you should know first

No formal prerequisites; some hands-on practice helps

Not covered

Vendor-specific administration beyond the topics listed
Topics outside the sections named in this paper

How to prepare

Revise each section topic: Core OOP concepts; SOLID principles; Design patterns; Modelling and code smells
Practise explaining each idea in your own words before you sit

Questions people ask

Can I retake the paper?

Yes. You have 3 attempts, with a 7 day wait between them.

What do I get if I pass?

A shareable credential issued by Revquix that you can add to your profile.

Written by its author and reviewed by Revquix.

What the paper looks like

Every candidate gets a different paper worth the same marks: each section draws its questions from a larger pool, and a retake avoids the questions you have already seen.

Core OOP concepts11 questions · 11 marks
SOLID principles11 questions · 11 marks
Design patterns14 questions · 14 marks
Modelling and code smells9 questions · 9 marks
Write the code1 question · 10 marks

What you get

A pass issues a Revquix Verified credential: this certificate, and a public page with its own code that anyone can check. It says it was earned through the open assessment.

Revquix

REVQUIX VERIFIED - SPECIMEN

CERTIFICATE NO.

RQ-SPEC-IMEN-0000-0000

CERTIFICATE OF ASSESSMENT

This is to certify that

Your name

passed a timed, integrity-monitored Revquix assessment in

Object-Oriented Programming & Design

RESULT

71% - 39 of 55 marks

DATE OF ISSUANCE: 18 May 2026

REVQUIX VERIFIED

Mrs. Lata Mangilal Parihar

FOUNDER, REVQUIX

Specimen. A real certificate carries a code that opens its own record - check one at https://www.revquix.com/certifications/verify. The page, not the file, is the record.