Logging in (or registering) will help the system to select questions that you need to focus on.

E1D02

Which of the following may transmit special codes intended to obscure the meaning of messages?

Select	Answer
A	Telecommand signals from a space telecommand station
B	Auxiliary relay links carrying repeater audio
C	Binary control characters
D	Data containing personal information

---

Hamboozler: Copyright 2007 Four Batons Technology. All rights reserved.
By continuing to use this site, you are agreeing to the Privacy Policy and Terms of Service.
Contact Us