ORIGINAL COMPANY-CONTEXT PRACTICE
Validate a memory-module configuration against dependencies
Original practice scenario: A hypothetical memory-product configurator combines capacity, interface, timing and board constraints. How would you detect incompatible combinations and explain failures?
Written for independent practice using company context; this is not a verified question from a company interview.
A REASONED APPROACH
Model answer.
Represent compatibility as explicit, versioned constraints with understandable reasons. A list of accepted product names does not explain why a new combination should be rejected.
Work through it
- Separate component identity from its attributes, validating required fields and units before evaluating dependencies among interface, timing, voltage and board support.
- Evaluate constraints in dependency order, distinguishing failed comparisons from checks that cannot run because an input is missing or invalid.
- Return stable rule identifiers, observed values and supported alternatives where justified, with fixtures covering boundary values and conflicting constraints.
Tradeoffs to discuss
- Declarative rules improve auditability but need a clear precedence model; procedural validation can express complex behavior while becoming harder to explain.
Common pitfalls
- Do not assume a newer component revision is compatible with every older board.
- A skipped rule must not be counted as a passed compatibility check.