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A+ Sections 1-27 1011 > Section 2 - Cable types > Flashcards

Section 2 - Cable types Flashcards

1
Q

What value/s can a bit store

A

1 or 0

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2
Q

Size of nibble

A

4 bits (1001)

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3
Q

Size of byte

A

8 bits (00111100)

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4
Q

lowercase b refers to

A

bits

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5
Q

uppercase B refers to

A

Bytes

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6
Q

kilo

A

1000 (th)

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7
Q

mega

A

1,000,000 (mill)

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8
Q

giga

A

1,000,000,000

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9
Q

tera

A

1,000,000,000,000 (trill)

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10
Q

What does explain mean

A

understand the meaning

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11
Q

Disk drive function

A

Allows for read and write to the system using an optical device

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12
Q

power button

A

a physical button that when pressed sends an electrical signal to the motherboard for the pc to turn on

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13
Q

DB9 connector

A

D-shaped sub-miniature pin at the back of a computer with 2 thumb screws

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14
Q

Serial cables

A

allow for transmission of bits, 1 at a time with a max speed of 115 kilobits/s (DB9)

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15
Q

How many devices can we connect to each USB, through which method

A

127, daisy chaining

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16
Q

what device is used to allow for daisy chaining

A

usb hub

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17
Q

Each port is controlled by what and what does it do?

A

Host controller uses the same amount of bandwidth for all devices in a port e.g. if max bandwidth is 5gbp/s and 5 devices are connected then each device gets 1gbp/s

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18
Q

What does a longer cable mean

A

higher chances of resistance and speed, signal deterioration

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19
Q

max milliamps on USB 1.0/2.0

A

500

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19
Q

What does a short cable mean

A

Maximum performance

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20
Q

max milliamps on USB 3.0

A

900

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21
Q

max milliamps on a Powered Device Port (PD)

A

1500

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22
Q

What is the Type A connector commonly used for?

A

Desktops and laptops

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23
Q

What is the type C commonly used for?

A

More modern style and easier as its plugging in can be either way

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24
Q

what is USB Type B commonly used for?

A

Printers and scanners, whether it will work is dependant on the version, 2.0/3.0 as 3.0 has a different model

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25
Q

What does HDMI stand for?

A

High definition multimedia interface

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26
Q

What is HDMI Digital Content Protection (HDCP)

A

Allows a device to validate the connection, validate a handshake and check that both devices are authorised to receive that signal

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27
Q

Type A, C, D refer to what?

A

A: Normal size, C: Mini, D: Micro

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28
Q

Category 1, (standard) support what resolution and hz

A

1080p and 60hz

29
Q

Category 2, (High speed) has what speed, include ultra high speed too

A

18Gbps and 48Gbps

30
Q

What is HDMI’s competitor called and who founded them?

A

DisplayPort Interface by VESA

31
Q

Name the variants of display port

A

DP, MDP (Mini Displayport)

32
Q

What does HDMI and DisplayPort have in common?

A

They have the same capabilities for the most part

33
Q

DisplayPort can support high speed data transfer up to what

A

20Gbps

34
Q

What is Digital Visual Interface (DVI) used for?

A

Analogue and digital outputs (predecessor to HDMI)

35
Q

What DVI variants exist?

A

DVI- A,D,I

36
Q

What does DVI-A support

A

Analogue

37
Q

What does DVI-D support

A

Digital

38
Q

What does DVI-I support

A

Analogue or digital signals

39
Q

What connector does Video graphics array (VGA) use?

A

15-pin standard analogue video interface port

40
Q

What’s a disadvantage of VGA?

A

Since each pin has a specific role, if just 1 was broken off then one of its capabilities will cease to exist. e.g. if the R of RGB pin was broken then red would no longer be displayed

41
Q

What is the third alternative to display interface and what can it do aswell

A

Thunderbolt, data transfer

42
Q

What are the 4 versions of thunderbolt

A

Thunderbolt 1,2,3,4 (1, 2 are backwards compatible with DP)

43
Q

How can we differentiate between DP and thunder bolt ports?

A

there will be a thunderbolt symbol next to the port

44
Q

What is different about thunderbolt 3

A

Changed the physical interface to use the same port connector as USB-C

45
Q

What’s a problem with USB-C ports?

A

Doesn’t always support thunderbolt3, but all thunderbolt 3 support USB-C

46
Q

Max cable length for thunderbolt 3 and max Gbps

A

1.6ft and 40Gbps

47
Q

Name an adv of thunderbolt 4

A

Compatible either way, USB-C port –> Thunderbolt and vice versa

48
Q

What is a lightning cable

A

Specific proprietary connector create by apple for mobile devices

49
Q

What is serial advanced technology attachment (SATA) used for

A

Standard method of connecting a storage device to a motherboard

50
Q

What cables are used for SATA connection?

A

SATA 7-Pin Data Cable, SATA 15-PIN Power connector

51
Q

What versions of SATA exist, state their max speeds

A

1 1.5Gbps,2 3Gbps,3 6Gbps

52
Q

With SATA revision 3 what is the common limitation?

A

The hard drive speed, not the cable

53
Q

What is eSATA?

A

Cable outside of the case

54
Q

What is the predecessor to SATA

A

IDE/PATA, 40 pins

55
Q

What does PATA/IDE support

A

Up to 2 devices and can communicate at the same time

56
Q

expand on MOLEX Power Connector

A

A 4-pin connector attached directly from the power supply to a device

57
Q

expand on Small computer Systems Interface (SCSI)

A

Legacy parallel bus connector that allows multiple devices to be daisy changed together

58
Q

Expand on the SCSI variants

A

Narrow: 7 devices, Wide 15 devices

59
Q

When connecting a SCSI device, what cables were used

A

High Density Cable - 68 Pins (required Molex connector for add power)
Single Connector attachment (SCA) - 80 pins

60
Q

USB 1.0 Transfer Rate

A

1.5Mbps

61
Q

USB 1.1 Transfer Rate

A

12Mbps

62
Q

USB 2.0 Transfer Rate

A

480Mbps

63
Q

USB 3 Variants

A

Gen 1, Gen 2, Gen 2x2

64
Q

USB 3.2 Gen 1 Transfer Rate

A

5Gbps

65
Q

USB 3.2 Gen 2 Transfer Rate

A

10Gbps

66
Q

USB 3.2 Gen 2x2 Transfer Rate

A

20Gbps

67
Q

USB4 Transfer Rate

A

40Gbps

68
Q

USB 1.0 Max Cable Length

A

3 metres (9feet)

69
Q

USB 1.1 & 2.0 Max Cable Length

A

5 Metres (15feet)

70
Q

USB 3.0 & 4 Max Cable Length

A

3 Metres (9feet)

A+ Sections 1-27 1011 (27 decks)

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