NAVEDTRA 14189A, Ch. 1

Question 1

What year was the first official naval radio message sent from ship to shore?

Answer 1

1899

Question 2

What year was the first radiotelephone used between ships?

Answer 2

1916

Question 3

In what year were the first superheterodyne receivers installed in the fleet?

Answer 3

1931

Question 4

In what year were the first successful radio teletypewriter transmissions between ships completed?

Answer 4

1944

Question 5

In what year did the first successful use of radiophoto (facsimile) occur?

Answer 5

1945

Question 6

What refers to communications over a distance and includes any transmission, emission, or reception of signs, signals, writings, images, or sounds?

Answer 6

Telecommunications

Question 7

What is the most important method the Navy has of communicating between widely separated forces?

Answer 7

Radio

Question 8

What was the first means of radio communications that had military and commercial importance?

Answer 8

Radiotelegraphy

Question 9

Line-of-sight characteristics limit the usual range of radiotelephone from how many miles?

Answer 9

20 to 25

Question 10

The Navy uses radio teletypewriter (rtty) mainly for high-speed automatic communications across ocean areas and has a normal speed of operation of how many words per minute?

Answer 10

100

Question 11

What is the process used to transmit photographs, charts, and other graphic information electronically?

Answer 11

Facsimile (fax)

Question 12

What is a combination of sets, units, assemblies, subassemblies, and parts joined together to perform a specific operational function or several functions?

Answer 12

System

Question 13

What consists of a unit or units and the assemblies, subassemblies, and parts connected or associated together to perform a specific function?

Answer 13

Set

Question 14

What is a collection of units, assemblies, subassemblies, and parts?

Answer 14

Group

Question 15

What is an assembly or any combination of parts, subassemblies, and assemblies mounted together?

Answer 15

Unit

Question 16

What is a number of parts or subassemblies, or any combination thereof, joined together to perform a specific function?

Answer 16

Assembly

Question 17

What is one component or two or more components joined together?

Answer 17

Part

Question 18

What is the frequency range for the extremely high frequency (EHF) band?

Answer 18

30 GHz - 300 GHz

Question 19

What is the frequency range for the super high frequency (SHF) band?

Answer 19

3 GHz - 30 GHz

Question 20

What is the frequency range for the ultra high frequency (UHF) band?

Answer 20

300 MHz - 3 GHz

Question 21

What is the frequency range for the very high frequency (VHF) band?

Answer 21

30 MHz - 300 MHz

Question 22

What is the frequency range for the high frequency (HF) band?

Answer 22

3 MHz - 30 MHz

Question 23

What is the frequency range for the medium frequency (MF) band?

Answer 23

300 KHz - 3 MHz

Question 24

What is the frequency range for the low frequency (LF) band?

Answer 24

30 KHz - 300 KHz

Question 25

What is the frequency range for the very low frequency (VLF) band?

Answer 25

3 KHz - 30 KHz

Question 26

What is the frequency range for the extremely low frequency (ELF)

Answer 26

Up to 300 Hz

Question 27

What band has the ability to penetrate ocean depths to several hundred feet with little signal loss?

Answer 27

ELF

Question 28

What type of transmission is normally considered a broadcast, that is, one-way transmission, no reply required?

Answer 28

VLF

Question 29

What systems are established to communicate over long- distance trunks or links between fixed terminals?

Answer 29

Point-to-point

Question 30

What is normally a message circuit between two points that are both switching centers or individual message distribution points?

Answer 30

Trunk

Question 31

What is a transmitter-receiver system connecting two locations?

Answer 31

Link

Question 32

Frequencies above what are not normally refracted by the atmosphere and ground-wave range is minimal?

Answer 32

30 megahertz

Question 33

The naval communications system is broken down into what groups?

Answer 33

Strategic and tactical

Question 34

What type of communications are usually limited to a specific area of operations and are used to direct or report the movement of specific forces?

Answer 34

Tactical

Question 35

What mode is a method of operation in which telecommunications between stations takes place simultaneously in both directions using two separate frequencies?

Answer 35

Full-Duplex (fdx)

Question 36

What is the type of operation in which one station transmits information on one or more channels directed to more than one station and/or unit?

Answer 36

Broadcast (bc)

Question 37

Message traffic is normally sent to the fleet by three methods: broadcast, intercept, and what else?

Answer 37

Receipt

Question 38

What combines into a single system all the elements that make up the naval communications system and the Army and Air Force equivalent?

Answer 38

DCS

Question 39

What offers rapid, direct interconnection of DOD and certain other government installations through worldwide telephone exchanges?

Answer 39

DCS AUTOVON

Question 40

40. What provides authorized users with a means for exchanging classified information over communications security (COMSEC) circuitry or over other approved circuitry?

Answer 40

AUTOSEVOCOM

Question 41

Daily capacity of the AUTODIN system is about how many average-length messages?

Answer 41

Five million

Question 42

What was established for the purpose of integrating the critical intelligence communications (CRITICOMM) and the special intelligence communications (SPINTCOMM) networks into a single automated communications network?

Answer 42

DSSCS

Question 43

What network provides a voice link between the Chief of Naval Operations (CNO) and all subordinate commands ashore, afloat, and airborne?

Answer 43

HICOM

Question 44

What meets our need for a connection between Navy tactical voice systems of the operating forces and the various fixed telephone services ashore?

Answer 44

NORATS