LESSON 2
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
Item
Correct Answer and Feedback
1.
D.
Communications security.
Communications security (COMSEC) is the protection resulting from all measures
designed to deny to unauthorized persons valuable information which might be
derived from the possession and study of telecommunications. (page 2-2, Frame 1.)
2.
C.
Alert and attentive.
The alert communicator assumes the enemy is listening every time he makes a radio
transmission. Through attention to details, COMSEC makes it possible to conceal
the location, composition, movement, and plans of our armed forces. (page 2-2,
paragraph 2-1.)
3.
D.
Reliability and security.
Reliability is always of paramount importance. However, there is a variable or
changeable relationship between security and speed. In the planning stages of an
operation, for example, when only a few persons should know what is
contemplated, security is far more important than speed. (page 2-3, Frame 2.)
4.
B.
Restricted access.
Physical security results from all physical measures necessary to safeguard
classified equipment, material, and documents from access to or observation by
unauthorized persons. (page 2-4, Frame 3.)
5.
D.
Transmission security.
Transmission security results from all measures designed to protect transmissions
from unauthorized interception, traffic analysis, imitative deception, and direction
finding. (page 2-5, Frame 4.)
SS0652
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