The phrase “which of the following is true of transmitting SCI” is from security/clearance training about Sensitive Compartmented Information (SCI) , and the correct idea behind these questions is always that SCI must use approved secure channels and protections.

Core point

For these “which of the following is true of transmitting SCI” questions, the true statement is typically that SCI must be transmitted only via approved secure communication systems or channels, never over unclassified or personal systems.

What SCI transmission usually requires

  • SCI must go over approved secure communications systems (for example, accredited secure networks or secure fax), not ordinary or unclassified channels.
  • Hand-carrying or couriering SCI is allowed only when a person is properly courier-briefed and follows strict wrapping and control procedures; it is not casually hand-carried.
  • SCI may be printed or faxed only using authorized secure devices and must be promptly retrieved so it is never left exposed.

Common “false” options in these questions

In many practice questions, the incorrect answer choices include things like:

  • “SCI can be transmitted without encryption”
  • “SCI should be transmitted on unclassified networks”
  • “Transmitting SCI via personal email is acceptable”
  • “SCI may be faxed using any facsimile machine”
  • “Anyone with eligibility to access SCI may hand‑courier SCI”

All of those conflict with the rule that SCI requires secure, approved channels and controls.

How to use this for your specific question

If your original multiple‑choice options look similar to the patterns above, pick the one that says something like:

  • “SCI must be transmitted through approved secure channels” or
  • “SCI must be transmitted only via approved secure communications systems.”

That option reflects the standard requirement and is the one that is true of transmitting SCI.

Information gathered from public forums or data available on the internet and portrayed here.