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

Section 2 - Cable types Flashcards

(71 cards)

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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
what is USB Type B commonly used for?
Printers and scanners, whether it will work is dependant on the version, 2.0/3.0 as 3.0 has a different model
25
What does HDMI stand for?
High definition multimedia interface
26
What is HDMI Digital Content Protection (HDCP)
Allows a device to validate the connection, validate a handshake and check that both devices are authorised to receive that signal
27
Type A, C, D refer to what?
A: Normal size, C: Mini, D: Micro
28
Category 1, (standard) support what resolution and hz
1080p and 60hz
29
Category 2, (High speed) has what speed, include ultra high speed too
18Gbps and 48Gbps
30
What is HDMI's competitor called and who founded them?
DisplayPort Interface by VESA
31
Name the variants of display port
DP, MDP (Mini Displayport)
32
What does HDMI and DisplayPort have in common?
They have the same capabilities for the most part
33
DisplayPort can support high speed data transfer up to what
20Gbps
34
What is Digital Visual Interface (DVI) used for?
Analogue and digital outputs (predecessor to HDMI)
35
What DVI variants exist?
DVI- A,D,I
36
What does DVI-A support
Analogue
37
What does DVI-D support
Digital
38
What does DVI-I support
Analogue or digital signals
39
What connector does Video graphics array (VGA) use?
15-pin standard analogue video interface port
40
What's a disadvantage of VGA?
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
What is the third alternative to display interface and what can it do aswell
Thunderbolt, data transfer
42
What are the 4 versions of thunderbolt
Thunderbolt 1,2,3,4 (1, 2 are backwards compatible with DP)
43
How can we differentiate between DP and thunder bolt ports?
there will be a thunderbolt symbol next to the port
44
What is different about thunderbolt 3
Changed the physical interface to use the same port connector as USB-C
45
What's a problem with USB-C ports?
Doesn't always support thunderbolt3, but all thunderbolt 3 support USB-C
46
Max cable length for thunderbolt 3 and max Gbps
1.6ft and 40Gbps
47
Name an adv of thunderbolt 4
Compatible either way, USB-C port --> Thunderbolt and vice versa
48
What is a lightning cable
Specific proprietary connector create by apple for mobile devices
49
What is serial advanced technology attachment (SATA) used for
Standard method of connecting a storage device to a motherboard
50
What cables are used for SATA connection?
SATA 7-Pin Data Cable, SATA 15-PIN Power connector
51
What versions of SATA exist, state their max speeds
1 1.5Gbps,2 3Gbps,3 6Gbps
52
With SATA revision 3 what is the common limitation?
The hard drive speed, not the cable
53
What is eSATA?
Cable outside of the case
54
What is the predecessor to SATA
IDE/PATA, 40 pins
55
What does PATA/IDE support
Up to 2 devices and can communicate at the same time
56
expand on MOLEX Power Connector
A 4-pin connector attached directly from the power supply to a device
57
expand on Small computer Systems Interface (SCSI)
Legacy parallel bus connector that allows multiple devices to be daisy changed together
58
Expand on the SCSI variants
Narrow: 7 devices, Wide 15 devices
59
When connecting a SCSI device, what cables were used
High Density Cable - 68 Pins (required Molex connector for add power) Single Connector attachment (SCA) - 80 pins
60
USB 1.0 Transfer Rate
1.5Mbps
61
USB 1.1 Transfer Rate
12Mbps
62
USB 2.0 Transfer Rate
480Mbps
63
USB 3 Variants
Gen 1, Gen 2, Gen 2x2
64
USB 3.2 Gen 1 Transfer Rate
5Gbps
65
USB 3.2 Gen 2 Transfer Rate
10Gbps
66
USB 3.2 Gen 2x2 Transfer Rate
20Gbps
67
USB4 Transfer Rate
40Gbps
68
USB 1.0 Max Cable Length
3 metres (9feet)
69
USB 1.1 & 2.0 Max Cable Length
5 Metres (15feet)
70
USB 3.0 & 4 Max Cable Length
3 Metres (9feet)

A+ Sections 1-27 1011 (27 decks)

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