Placeholder Domain 2 - Concept Inventory and Terminology Ledger
What this section covers
A concept inventory is a deliberate list of the ideas the exam can sample, each paired with a one-sentence definition, a concrete example, and a near-miss that is often confused with it. Candidates must understand terminology control: expanding every acronym on first use, separating synonyms that the exam treats as distinct, and ordering concepts by dependency so that foundational ideas are solid before advanced ones. The inventory is not a textbook summary; it is a testable map.
Traps that appear in questions
The most common trap is definition matching without context: two terms share a word, so candidates assume they are interchangeable. Another is acronym overload - the same letters mean different things in different domains. A third is memorizing a definition verbatim but being unable to recognize a scenario that instantiates it. Questions exploit boundary cases: an example that satisfies most of a definition but fails one necessary condition.
Worked example
Build a four-column ledger for one term: term, one-sentence definition, worked example, near-miss. For a hypothetical term 'rate limit,' write: definition - a cap on requests per time window; example - 100 requests per minute per client; near-miss - a quota on total monthly usage, which is not a per-window cap. Then close the source and explain the term aloud in one sentence. If the near-miss cannot be stated, the entry is incomplete.
Rule of thumb
For every term you add, add one near-miss. The near-miss is what turns a definition into discrimination, and discrimination is what exam questions reward.