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CompTIA A+ Core 1 > 3.1 Cable Types And Connectors > Flashcards

3.1 Cable Types And Connectors Flashcards

(51 cards)

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1
Q

Twisted Copper Cabling

A
  • pairs consist of two wires w/ equal and opposite signals
  • cables are twisted to reduce cross-talk and EMI between
  • different pairs in the same cable have different twist rates
  • max length of 100 meters
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2
Q

Twisted Copper Cable Types

A

Cat5, Cat5e, Cat6, Cat6e
- different cable category for different ethernet standards
- typically use RJ45, sometimes RJ11
- 4 twisted pairs
- Cat5e and higher will support PoE on all voltages

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3
Q

Category 5

A

1000BASE-T
100 meters
100 Mbit/s

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4
Q

Category 5e (enhanced)

A

1000BASE-T
100 meters
1 Gbit/s

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5
Q

Category 6

A

10GBASE-T
10 Gbit/s up to 55 meters unshielded
1 Gbit/s up to 100 meters shielded

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6
Q

Category 6a (augmented)

A

10GBASE-T
100 meters
10Gbit/s

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7
Q

Coaxial Cable

A
  • two or more forms share a common axis
  • copper cabling
  • RG-6 coaxial used in television/digital cable and internet over broadband cable
  • shielded
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8
Q

Plenum-rated Cable

A

Fire-rated cable jacket: FEP or PVC
Less flexible

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9
Q

UTP

A

Unshielded Twisted Pair
- most common twisted pair cabling
- low cost, easy installation
- ethernet and telephone systems

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10
Q

STP

A

Shielded Twisted Pair
- additional shielding protects against interference
- shields each pair and/or whole cable
- requires cable to be grounded
- ethernet and telephone systems

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11
Q

Direct Burial STP

A
  • cable in the ground
  • waterproof
  • conduit not always needed
  • shielded twisted pair
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12
Q

Fiber Optic Cabling

A
  • transmission by light
  • signal is slow to degrade
  • long distance
  • no radio signal = no EMI or RFI, difficult to tap
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13
Q

Multi-mode vs Single-mode Fiber

A

Multi-mode:
- short range
- relatively inexpensive (ex. LED)

Single-mode:
- long range
- expensive, commonly uses lasers

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14
Q

568A and 568B

A

Cabling Standards
- guideline on how cables should be installed
- ex. the colors used for each pin

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15
Q

USB 1.1

A

Speeds up to 12 Mbits/s, 5 meters

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16
Q

USB 2.0

A

480 Mbits/s
5 meters

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17
Q

USB 3.0

A

5 Gbits/s
Max length not specified
3 meter length cable is common

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18
Q

USB 1.1/2.0 Connectors

A

Standard-A Plug
Standard-B Plug
Mini-B Plug
Micro-B Plug

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19
Q

USB 3.0 Connectors

A

Standard-A Plug (similar shape to 2.0)
Standard-B Plug
Micro-B Plug

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20
Q

USB 3.2

A
  • doubled bandwidth with USB-C

USB 3.2 Gen 1x2
- 10 Gbps using two Gen 1

UBS 3.2 Gen 2x2
- SuperSpeed USB 20 Gbps using two Gen 2 lanes

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21
Q

Thunderbolt

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A
  • data and power on the same cable
  • based on Mini DisplayPort standard
  • max 3 meters for copper
  • max 60 meters for fiber
  • daisy chain up to 6 devices
22
Q

Serial Console Cables

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A
  • asynchronous transmission
  • commonly used for RS-232
  • ex. DB-9 and DB-25
23
Q

VGA

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A

Video Graphics Array
- DB-15 connector
- three row, 15 pin
- blue
- video only, no audio
- analog
- image degrades after 5-10 meters

24
Q

HDMI

Study These Flashcards
A

High-Definition Multimedia Interface
- video and audio signal
- digital
- 20 meters before signal loss
- 19 pin(Type A) connector

25
DisplayPort
- digital info sent in packetized form - video and audio signal - compatible w/ HDMI and DVI
26
DVI
Digital Visual Interface - single link video: 3.7 Gbps - dual link video: 7.4 GBPs - no audio DVI-A for analog signals DVI-D for digital signals DVI-I for digital and analog
27
SATA
Serial Advanced Technology Attachment - connection exclusively inside the computer for storage devices - one power cable to the PSU and one data cable to the motherboard per storage device - 15 pin power connector - L-shaped 7 pin data connector
28
SATA cable speed
1.0: 1.5 Gbit/s, 1 meter 2.0: 3 Gbit/s, 1 meter 3.0: 6 Gbit/s, 1 meter 3.2: 16 Gbit/s, 1 meter
29
eSATA
- external storage device connection - SATA standard - 2~ meters
30
SCSI
Small Computer Systems Interface - connects to storage devices, scanners, printers, etc. - daisy-chain up to 16 devices - different standards with different interfaces and cables - parallel SCSI requires termination
31
SCSI ID and LUN
- every SCSI device on a single bus is assigned its own ID number - LUN(logical unit number) are defined within each SCSI ID
32
Serial Attached SCSI (SAS)
- serial connection instead of parallel - increased throughput point-to-point connection: - no more daisy chains - no termination required
33
PATA or IDE
Parallel ATA - originally called Integrated Drive Electronics (IDE) - originally 40 wire ribbon cable with 40 pins - 80 wire ribbon cable was used as speeds increased -supports two devices on a single PATA connection
34
Adapters and Converters
- convert between different connectors that are electrically compatible - convert from one format to another
35
RJ 11 connector
6 position, 2 conductor Telephone or DSL connection
36
RJ45
8 position, 8 conductor Most commonly used for ethernet Modular connector
37
F-connector
Cable TV Cable modem DOCSIS RG-59/RG-6 cabling
38
Punchdown Block
Wire-to-wire patch panel Wires are punched into the block 110 block: newer, used in computer networks 66 block: older, used in analog telephone systems
39
USB-C
24 pin double sided Used for both hosts and devices
40
Molex Connector
- 4 pin peripheral power connector - +12 V and +5 V - provides power from power supply to internal devices (storage devices, optical drives, fans, etc).
41
Lightning
- Apple proprietary - higher power output compared to micro usb - getting replaced by USB-C
42
Db-9
- D-sub - commonly used for RS-232 - 9 pin
43
LC
Local Connector - Used for fiber - small form factor - high efficiency - most common nowadays
44
ST Connector
Straight Tip - Used for fiber - common for corporate networks and military applications
45
SC
Subscriber Connector - aka square connector - used for fiber - suited for datacoms and telecom applications
46
Mini-USB and Micro-USB
- used for mobile devices, peripherals, and storage devices - data transfer - mainly used to charge portable electronics - being replaced by USB-C
47
Straight- through vs crossover ethernet cables
Straight-through: - connects devices that operate at different layers of the network model - ex. Computer and switch Crossover: - connects devices operating at the same level of the network - ex. Two switches
48
Patch Cable
Basically a short ethernet cable
49
Thunderbolt 1
- 10 Gbit/s x 2 channels - 20 Gbit/s total throughput - MDP connector
50
Thunderbolt 2
- 20 Gbit/s aggregated channels - MDP connector
51
Thunderbolt 3
- 40 Gbit/s aggregated throughput - USB-C connection

CompTIA A+ Core 1 (28 decks)

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