K-levels define the complexity of the question from Level 1 up to Level 6.
K1 = Remember: The candidate will recognize, remember and recall a term or concept.
K2 = Understand: The candidate can select the reasons or explanations for statements related to the topic, and can summarize, compare, classify, categorize and give examples for the testing concept.
K3 = Apply: The candidate can select the correct application of a concept or technique and apply it to a given context.
K4 = Analyze: The candidate can separate information related to a procedure or technique into its constituent parts for better understanding, and can distinguish between facts and inferences. Typical application is to analyze a document, software or a project situation and propose appropriate actions to solve a problem or accomplish a task.
K5 = Evaluate: The candidate may make judgments based on criteria and standards. He detects inconsistencies or fallacies within a process or product, determines whether a process or product has internal consistency and detects the effectiveness of a procedure as it is being implemented (e.g., determine if a scientist's conclusions follow from observed data).
K6 = Create: The candidate puts elements together to form a coherent or functional whole. Typical application is to reorganize elements into a new pattern or structure, devise a procedure for accomplishing some task, or invent a product (e.g., build habitats for a specific purpose).