Vol 2 Self Test Flashcards Preview

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Flashcards in Vol 2 Self Test Deck (107):
1

Why was 1553 developed?

Provide a standard for a communications bus

2

Why use the bus standard? What was the benefit?

Limit point-to-point cabling. Lower weight.

3

What factors are the serial transmission rate of the 1553 based upon?

Reliability, electrical interfaces, and hardware capabilities

4

What makes 1553 deterministic?

Single BC

5

What type messages make up typical 1553 system command?

BC to RT, RT to BC, and RT to RT

6

What are mode codes?

BC commands that provide network management

7

Requirements for multiple bus architecture?

BC functionality for each bus

8

Four components in a CPU?

Control unit, arithmetic/logic unit, internal memory, I/O controllers

9

Primary unit of any information system?

CPU

10

What are microchips made from, how does current pass through them?

Silicon and transistors, transistors form circuits

11

When can silicon be used to conduct electricity?

Once it's been treated with chemicals

12

Why are labs that make circuits clean?

Keep dust out of circuits

13

What controls the speed of a computers activities?

Quartz clock

14

Why different kinds of chips? Where can chips be mounted together?

Specialized purposes. Printed circuit boards

15

How many signals are in the code used by a computer and what are the codes?

ON and OFF

16

What are transistor switches called? What are different kinds based on?

Gates. Logic conditions.

17

What determines the number of I/O devices on a computer system?

Design of particular system, type of computer used

18

What happens once the control unit decodes commands and synchronizes a device with the data processing system?

Input reader reads info > data converted to computer code > xmitted to main storage area

19

What determines the storage location where data is either entered or where it will be taken?

Program instructions

20

What component of a computer supervises how the entire information system functions?

Control unit

21

Where are all the computer calculating, sorting, and comparing of data accomplished?

Arithmetic/logic unit

22

What are the temporary storage areas in an ALU called?

Registers

23

What links a computer to the outside world?

I/O units

24

What controls how the computer system accesses I/O devices?

I/O controller

25

Why I/O controller increase processing speed?

Simultaneous I/O operations

26

What function does a channel perform and how does it operate with the CPU?

Manages I/O control unit independent of CPU

27

Purpose of buffering system?

Provide an overlap of operations

28

What bits? Bytes?

1s and 0s. 8 bits

29

How much can each primary memory location store?

One data value

30

Two types of primary memory?

ROM and RAM

31

What type of memory is essentially unlimited?

Secondary

32

Computer file cabinet?

Storage

33

What happens to all data that is processed when it passes through main storage?

Furnished to an output unit

34

Random access unit? Sequential?

CD. Magnetic tape

35

What's the heart of a computer display?

CRT

36

Why must the CRT electron gun sweep the screen 60 to 70 times per second?

Phosphors don't glow

37

What display resolution?

Number of pixels that make image

38

How many pixels on a CGA?

320x200

39

Why LAN?

Link computers and provide shared access

40

Define Internet protocols

Suite of communication protocols

41

What signal repeater do?

Regenerates radio signal

42

What is a router and how does it function?

Figure out what to do with IP packets

43

What is RAID?

A way of storing data by splitting it into different places

44

How does the data striping technique work?

Break into blocks and put blocks in different spots

45

RAID-0?

Striping, no redundancy

46

RAID-2?

Solely data mirroring

47

RAID-5?

Striping parity

48

Describe insulated wire construction features and explain the need for stranded conductors

Metal conductor covered in dielectric. Dielectric insulation, thermal protection, abrasive resistance, moisture resistance

49

Describe the shielded cable construction features.

Metallic braid over insulation to provide barrier against EMI

50

Describe coaxial cable construction features and purpose

Inner/outer conductor, carry RF power

51

Describe the EMP hardened cable construction features and use

Braided shield, laminated copper-foil tape wrap, second braided overall shield

52

Describe the protective layers of an EMP cable

Connect EMP hardened components

53

What part of an EMP cable can be repaired in the field?

First two layers and a jack or connector

54

What are the two parts of an electrical connector? How is the electrical connector coupled?

Receptacle/plug assembly. Using a coupling device

55

What part of an electrical connector is usually the fixed part?

Receptacle

56

How are pin-and-socket contacts connected to the wires?

Soldered or crimped

57

Which side of a connector/circuit should be the hot side?

Female contacts

58

What problems can occur if you don't adhere to the design dimensions of an RF connector?

Added losses to RF power

59

Major factor when using fiber instead of conventional wire cables?

Elasticity

60

Why important to control the stress and forces exerted on a fiber optic cable?

Prevent loose or uneven stranding

61

In what areas do the military use fiber cables?

Military vehicles, high-end electronics

62

Key advantage of fiber in military vehicles?

Multiplexing a number of signals into a common bus

63

Advantages of fiber over copper?

Lighter

64

Security advantage of fiber?

Harder

65

What's a common use of fiber optic cable?

Comm links

66

What's a transmitter's central part and is considered an active component in a fiber optic communication system?

LED or Laser Diode

67

What happens when you point lasers at your eyes?

See tihngs REELY good and fast

68

What part of fiber system converts optical energy back into electrical?

Detector

69

What two types of detectors are used in fiber optic systems?

Pin/avalanche photodiodes

70

Why are exact dimensions necessary when stripping wire with wire strippers?

Ensures proper connection

71

Why rosin solder over acid core?

Rosin doesn't corrode

72

Explain a high-resistance solder connection

Too much solder between connectors = solder flows = loose

73

Fist step in soldering joints?

Tin the wires

74

What could be the consequences of using too much solder?

Burn yourself

75

Why not allow soldering iron to get too hot?

Overheated iron quickly loses its tinning

76

Purpose of terminal lug?

Easy connect/disconnect

77

How use splice?

Insert > crimp

78

What makes connector plugs connections more reliable?

Crimped to wire

79

Explain purpose of crimping tools and why it's important to crimp a connector properly

Not too loose/tight

80

How know use right insertion/extraction tool?

Use data plate on tool

81

How insertion tool work?

Spread it, put it in

82

How does H2-900B heating tool work?

Stream of nitrogen through electrically heated element

83

When using heating tool, what determines the correct air temperature and pressure?

Policies and directives

84

Under what four inspection concepts are Air Force aircraft inspected?

Periodic, phase, isochronal, programmed depot Mx

85

The periodic inspection is more extensive than what two other inspections?

Hourly post flight, basic post flight

86

What is a phase inspection and why are they performed?

Basic/hourly post flight + periodic get combined into small packages

87

How long is preflight on AC conducting airline type operations valid?

22, 28, or 72 hours

88

How many hours before a cargo AC used for airlift ops requires preflight?

28 hours

89

When basic post flight? What does it determine?

Last flight of flying period. Suitable for another flight

90

When BPO?

When jet is released by operations

91

BPO more thorough than these two

Preflight, thruflight

92

When hourly post flight? What does it augment?

After specified number of hours. Augs basic post flight

93

Inspections peculiar to the isochronal inspection concept?

Major, minor, home station

94

When is a major inspection due? What does it consist of?

Number of calendar days. Everything not normally checked

95

What is a minor inspection?

Check certain components

96

Requirements of an HSC?

When returns from a long range mission, or expiration of short calendar

97

What preventative Mx?

Normal upkeep and preservation

98

What is scheduled Mx?

Mx that can be programmed

99

What is unscheduled Mx?

Unpredictable

100

Who has responsibility of performing operator inspections?

The user

101

What directs when special inspections are performed?

TCTOs, MajComs, local directives

102

When are periodic inspections and lubrication requirements accomplished?

Specific number of power on hours, expiration of calendar period

103

What is the purpose of an acceptance inspection?

New equipment

104

Who performs the transfer inspection if more than 72 percent of the inspection interval has elapsed?

Transferring organization

105

Basic elements of a FOD prevention program?

Training, housekeeping, tool control, control of personal items, control of hardware/consumables, incident investigation/reporting, hazardous material control

106

What on 781A to indicate tool accountability?

Tool and FOD check complied with

107

When does DOP prevention begin? What is checked during prevention?

Open doors. Serviceability of fasteners and that doors are properly fitted