NAVEDTRA 15027 Module 6

Question 1

Which of the following is a prerequisite to ensuring the continued existence of the
United States?

Answer 1

National Security

Question 2

In the mid-1800s, literal (letter-for-letter) ciphers were primarily used by whom?

Answer 2

Military personnel

Question 3

Wireless communications were first introduced to the battlefield in which conflict?

Answer 3

WWI

Question 4

What is considered to be the greatest achievement of COMINT during World War
I?

Answer 4

The interception and decoding of a German diplomatic message, the Zimmerman Telegram

Question 5

When did the United States declare war on Germany in World War I?

Answer 5

April 6, 1917

Question 6

Whose intelligence gathering network covered the entire world at the onset of
World War II?

Answer 6

Japan

Question 7

Where was the U.S. Army’s SCR-270 radar that detected the incoming Japanese
warplanes in 1941 located?

Answer 7

Opana Point

Question 8

What was JN 25?

Answer 8

Japanese Navy’s general purpose code

Question 9

Whose plans for a routine inspection of his forces was thwarted by the United
States?

Answer 9

Admiral Yamamoto’s

Question 10

Which of the following helped locate and identify specific units?

Answer 10

Radio direction-finding (DF) equipment

Question 11

In what year were officer designators and enlisted ratings established for
cryptologic personnel?

Answer 11

1948

Question 12

The National Security Agency consists of what two primary missions?

Answer 12

SIGINT and IA

Question 13

What Executive Order was originally issued on December 4, 1981?

Answer 13

EO 12333

Question 14

Which fleet is Fleet Cyber Command?

Answer 14

Tenth Fleet