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core 1 > 3.1 Cable types > Flashcards

3.1 Cable types Flashcards

1
Q

What two values can a bit store?

A

1 or 0

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2
Q

How many bits is a ‘nibble’?

A

4 bits

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3
Q

How many bits is a ‘byte’?

A

8 bits

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4
Q

What is the name and abbreviation for 1000bits?

A

Kilobit (Kb)

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5
Q

What do lowercase b and capital B stand for, respectively?

A

b = bits
B = bytes

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6
Q

What is the name and abbreviation for 1 million bits?

A

Megabit, Mb

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7
Q

How many Kilobytes are in 1 Megabit?

A

125KB

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8
Q

What is the name and abbreviation for 1 trillion bytes?

A

Gigabyte, GB

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9
Q

What are USB type B cables most commonly used for?

A

Printers

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10
Q

Which USB connectors conform to USB standard 2.0?

A

Type A, Type B, Mini A and B, Micro A and B

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11
Q

How many pins are along one side of a Type A USB connector?

A

4 pins

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12
Q

When would you use a mini and micro USB connector, respectively?

A

Mini - Cameras
Micro - Smartphones, health monitors, GPS devices

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13
Q

What is the pin configuration of a USB Type B connector?

A

1 and 2 on top, 3 and 4 on bottom

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14
Q

Describe the pin configuration of a USB Type C

A

12 pins along both top and bottom; only one set is used; it doesn’t matter which way you put it in; if using with USB 3.2 compatible devices, there will be a Type C on both ends

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15
Q

When used with USB 3.1, what data transfer rates can a Type C connector support?

A

Superspeed - 5Gb/s
Superspeed+ - 10Gb/s

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16
Q

If a USB 2 device uses a USB 3 cable, what will happen?

A

It wll work, but only at USB 2 specifications

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17
Q

What is the highest USB version that a Type A connector can support?

A

USB 3.1

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18
Q

Why might a Lightning cable, even though it is type C, not conform to USB 3.2 specifications?

A

Because it is proprietary of Apple

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19
Q

List the Gb/s speed of USB 1.1, 2.0, 3.0, 3.1 Gen 1, 3.1 Gen 2, 3.1 Gen 2x2, and USB 4

A

1.1 - 12Mb/s, full speed
2.0 - 480Mb/s, high speed
3.0 - 5Gb/s
3.1 Gen One - 10 Gb/s
3.1 Gen Two - 10 Gb/s
3.1 Gen 2x2 - 20Gb/s (must have shorter cable)
4 - 40Gb/s (must have shorter cable)

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20
Q

What USB connectors support version 4?

A

Type A, B, C, B mini and B micro

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21
Q

What were some uses of serial cables, and what might they still be used for?

A

Used to connect external modem to computer
May still be used for keyboard/mouse, or specific equipment in industrial environments

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22
Q

Why were serial cables called such?

A

Because they only transfer data one bit at a time

23
Q

Name one advantage and one disadvantage of serial cables

A
  • They were better suited for transmitting data of longer distances as there were no timing issues (as there would be with 8 bits)
  • A lot slower!
24
Q

The RS-232 cable could support how many bps over how many metres?

A

9600bps over 15m

25
Q

The RS-422 cable could support how many Megabytes per second over how many metres?

A

10MBps over 12m, could go upto 1km but decreased speed significantly

26
Q

How was the RS-458 cable different to the other serial cables?

A

Didn’t increase speed, but could support many devices in a daisy chain or bus topology

27
Q

Who developed the Thunderbolt cable?

A

Apple and Intel

28
Q

What are some features of the Thunderbolt cable?

A
  • Bidirectional (transmit and receive data at the same time)
  • Up to 40Gbps data transfer rates
  • Supporting devices in bus topology
29
Q

What can the Thunderbolt cable be used for?

A
  • Supporting devices in bus topology
  • Charging
  • Data transfer
  • Audio
30
Q

What are SuperSpeed USB connectors used for?

A

Connecting peripherals such as mice, keyboard, webcam, printer or other devices to a computer

31
Q

What is a HDMI connector used for?

A

Connecting a monitor, TV, or other device for a video output display

32
Q

Why would you use a RJ-45 connecter?
What does the RJ stand for?

A

To access local area networks over a wired connection
Registered Jack

33
Q

What configuration of wires does the RJ-45 connector most often come with?

A

8 internal wires in twisted pairs, 8 pin 8 connector (8P8C)

34
Q

Which connector would you use for older mice, keyboards and external modems?

A

DB9 Connector

35
Q

Describe a DB-25 connector.

A

D-shaped sub miniature pin, two thumb screws on the side, goes into the back of a computer

36
Q

List the 3 sizes of connectors that support HDMI.

A
  • Full-size (Type A)
  • Mini (Type C)
  • Micro (Type D)
37
Q

Difference between Category 1 and Category 2 HDMI?

A

Cat 1 is standard, used for video content; Cat 2 is high-speed and uses higher resolutions (can go up to 4K)

38
Q

Between what data transfer speeds can Display Port support?

A

2.7Gb/s to 20Gb/s

39
Q

What is Display Port used for?

A

Digital displays; made as a replacement for VGA and DVI

40
Q

What is the difference between DVI-A, DVI-D, and DVI-I?

A

Only supports analog, only digital, and does both (integrated)

41
Q

Describe the VGA connector and what it was used for.

A

15-pin, analog video interface port, computer chipset standard for displaying colour graphics, superseded by DVI and DP due to not being able to keep up with larger displays

42
Q

Will all USB-C support Thunderbolt 3?

A

No. But all Thunderbolt 3 will support USB-C

43
Q

List some storage cables

A
  • Thunderbolt
  • Lightning
  • SATA
  • External SATA
  • PATA
  • Molex Power Connector
  • SCSI
44
Q

What is the main purpose of a SATA cable?

A

To connect a storage device to a motherboard inside a desktop computer

45
Q

What is the difference between the 7-pin and 15-pin SATA cables?

A

7-pin is a data cable, and the 15-pin is a power connector to provide power to the device

46
Q

What speeds can SATA versions 1, 2 and 3 support?

A

1 - 1.5Gb/s
2 - 3Gb/s
3 - 6Gb/s

47
Q

What is PATA?

A

Old IDE connectors, cables and standards but renamed for branding

48
Q

What cable was referred to as ribbon cable and what did it do?

A

IDE, connected storage devices to ports on motherboard (superseded by SATA)

49
Q

What is a Molex Power Connector?
List some use cases

A

A 4-pin connector that could attach directly from the power supply to a device.
Hard drives, floppy disks, motherboards, optical drives, CPU, graphics card

50
Q

Describe the configuration and voltage of the wires in a Molex connector

A

Yellow, black, black, red
12v, grounding, grounding, 5v

51
Q

What would a 20-pin Molex connector be used for?

A

Supplying power for all integrated components on the motherboard (Molex connectors are only ever used for power)

52
Q

Define a SCSI

A

A legacy parallel bus connector that allows multiple devices to be daisy chained together (8, then 16 later on)

53
Q

Give two characteristic features of Cat 5 cabling.

A
  • Twisted pair copper cabling
  • RJ45 connector

core 1 (27 decks)

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