physics

Physical configuration audit

Physical configuration audit is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Physical configuration audit rather than just read about it. In short: In computer engineering, a physical configuration audit (PCA) is the formal examination of the "as-built" configuration of a configuration item (CI) against its technical documentation to establish or verify the CI's product baseline. The PCA is used to examine the actual configuration of the CI that is representative of the product configuration, in order to verify that the related design documentation matches the…

Key takeaways

Physical configuration audit belongs to physics; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Physical configuration audit to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Physical configuration audit from memory before moving on to harder problems.

Reference excerpt

In computer engineering, a physical configuration audit (PCA) is the formal examination of the "as-built" configuration of a configuration item (CI) against its technical documentation to establish or verify the CI's product baseline. The PCA is used to examine the actual configuration of the CI that is representative of the product configuration, in order to verify that the related design documentation matches the design of the deliverable CI. It is also used to validate many of the supporting processes that the contractor uses in the production of the CI. This is also used to verify that any elements of the CI that were redesigned after the completion of the functional configuration audit also meet the requirements of the CI's performance specification. Additional PCAs may be accomplished later during CI production if circumstances such as the following apply:

The original production line is "shut down" for several years and then production is restarted. The production contract for manufacture of a CI with a fairly complex, or difficult-to-manufacture, design is awarded to a new contractor or vendor. Re-auditing in these circumstances is advisable regardless of whether the contractor or the government controls the detail production design.

Software PCA is one of the practices used in software configuration management for software configuration auditing. The purpose of the software PCA is to ensure that the design and reference documentation is consistent with the as-built software product.

References

External links Defense Acquisition Guidebook on Physical Configuration Audit

Worked examples

Example 1 — a first encounter with Physical configuration audit

Start with the simplest possible case. Write down what Physical configuration audit claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Physical configuration audit before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Physical configuration audit ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Physical configuration audit

In research: Physical configuration audit appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Physical configuration audit in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Physical configuration audit is common in secondary-school and first-year university syllabi. It links to neighbouring topics Configuration management, Software engineering stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Physical configuration audit outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Physical configuration audit” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Physical configuration audit in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Physical configuration audit means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Physical configuration audit out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Physical configuration audit in simple terms?

Why does Physical configuration audit matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Physical configuration audit?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Physical configuration audit.