Take a free practice quiz or get instant, explained answers to Marking Classified Information questions — portion marks, banner lines, and classification authority blocks, without the guesswork.
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Read the reasoning behind the answer so it actually sticks.
Looking for the official training, not practice questions? securityawareness.usalearning.gov — CDSE training catalog ↗
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Try it freeMarking questions live in the details — telling a banner line apart from a portion mark, or knowing exactly which elements belong in a classification authority block — and it's easy to transpose one for the other under time pressure. Cambo reads the exact marking example on your screen and explains which element is which and why.
Annually, typically alongside Derivative Classification training, for anyone who creates or handles classified documents.
Personnel who create, mark, or derivatively classify documents — generally the same audience required to take Derivative Classification training.
Derivative Classification training covers the decision of what should be classified and at what level; Marking Classified Information training covers how to correctly display that decision on the document itself — banner lines, portion marks, and the classification authority block.
No. Cambo is an independent study tool, not produced or endorsed by the Center for Development of Security Excellence or the Department of Defense.
"Not Releasable to Foreign Nationals" — a dissemination control marking that restricts release to foreign nationals regardless of the document's classification level.
DoDM 5200.01, Volume 2, and the Information Security Oversight Office's (ISOO) marking guidance are the primary references behind this training.