(35. Answer: voice, telegraphy, teletypewriter, facsimile, television,
36. Wire is a very dependable means. It includes the use of field wire,
wire-laying and recovery equipment, cable, battery-operated and sound-
powered telephones, switchboards, teletypewriters, multiplexers and other
associated or terminal equipment. When properly installed end employed,
these items form a means that is one of the most _______________________
a distinct advantage.
(36. Answer: dependable or reliable)
37. Wire communications are more secure than radio communications. Trans-
mission is confined to wire rather than being radiated into space for anyone's
receiver to pick up. This fact represents an advantage/disadvantage of wire.
(37. Answer: advantage)
38. Wire communications, however, are not completely secure. The security
of classified information is never assured when it is transmitted in the clear
over wire circuits. The employment of wire communications reduces the proba-
bility of intercept by the enemy, but you should NOT consider wire as a
____________________ means of transmission unless the circuits are approved by
proper authority for the transmission of ________________________ information.