connectors and cables Flashcards

1
Q

Twisted pair copper cabling

A

Balanced pair operation
Two wires with equal and opposite signals – Transmit+, Transmit- / Receive+, Receive-
Keeps a single wire constantly moving
away from the interference
The opposite signals are compared on the other end

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2
Q

Coaxial cables

A

Two or more forms share a common axis
RG-6 used in television/digital cable
– And high-speed Internet over cable

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3
Q

Plenum-rated cable

A

Traditional cable jacket - Polyvinyl chloride (PVC)
Fire-rated cable jacket

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4
Q

UTP (Unshielded Twisted Pair)

A

No additional shielding, The most common twisted pair cabling

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5
Q

STP (Shielded Twisted Pair)

A

Additional shielding protects against interference, shield each pair and/or the overall cable, requires the cable to be grounded

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6
Q

Direct burial STP

A

Overhead cable isn’t always a good option, put the cable in the ground
Provides protection from the elements

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7
Q

Optical fiber communication

A

Transmission by light
No RF signal
Signal slow to degrade
Immune to radio interference

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8
Q

Multimode fiber

A

Short-range communication
Relatively inexpensive light source
– i.e., LED

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9
Q

Single-mode fiber

A

Long-range communication
Expensive light source
– Commonly uses lasers

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10
Q

TIA/ETA 568A

A

White/green, green, white/orange, blue, white/blue, orange, white/brown, brown
Telecommunications Cabling Standard
Commercial Building

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11
Q

TIA/EIA 568B

A

white/orange, orange, white/green, blue, white/brown, brown
Telecommunications Cabling Standard (more traditionally used)
Commercial building

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12
Q

VGA (Video Graphics Array)

A

DB-15 connector
Blue color
Analog signal

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13
Q

HDMI (High-Definition Multimedia Interface)

A

Video and audio stream
19-pin (Type A) connector

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14
Q

DisplayPort

A

Digital information sent in packetized form
Compatible with HDMI and DVI

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15
Q

DVI (Digital Visual Interface)

A

Single and dual link
Single link; 3.7 Gbps (HDTV at 60 fps)
Dual link; 7.4 Gbps (HDTV at 85 fps)
No audio support
DVI-A (Analog signals)
DVI-D (Digital signals)
DVI-I (Integrated, Digital and analog in the same connector)

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16
Q

SATA

A

One power cable and data cable per device

17
Q

eSATA cable

A

External device connections
Uses the SATA standard
Similar in size to SATA but connectors are physically different

18
Q

The SCSI standard

A

Small Computer Systems Interface
Originally designed to string many peripherals
together onto a single cable/controller
Many different formats
Parallel and serial options

19
Q

SCSI advantages

A

Not just for hard drives (Scanners, tape drives, CD-ROM drives)
Many devices on a single bus
Very intelligent interface functionality
Industry longevity

20
Q

SCSI ID and logical unit (LUN)

A

Every SCSI device on a single bus is
assigned a separate ID number
Logical units (LUNs) are defined within each SCSI ID
The signal at the “end” of a physical SCSI bus is terminated
Serial attached SCSI (SAS) devices have no
jumpers, terminators, or settings

21
Q

Serial attached SCSI

A

Move from parallel to serial
Point-to-point connection
No termination required
The control and management of SCSI

22
Q

RJ11 connector

A

6 position, 2 conductor (6P2C)
Some cables will wire additional conductors
Telephone or DSL connection

23
Q

RJ45 connector

A

Registered Jack type 45
8 position, 8 conductor (8P8C)
Modular connector - Ethernet

24
Q

F-connector

A

Cable television
RG-6 cable - Threaded connector

25
Q

Punchdown block

A

Wire-to-wire patch panel
Wires are “punched” into the block
Additional wires punched into connecting block

26
Q

USB-C

A

24-pin double-sided USB connector (Used for both hosts and devices)
Used for USB, Thunderbolt
Interface is the same, signal can vary

27
Q

Molex connector

A

4-pin peripheral power connector
Power for many devices in the computer case

28
Q

Lightning

A

Apple proprietary
Some advantages over Micro-USB
Higher power output for phones and tablets
Can be inserted either way

29
Q

DB-9

A

D-subminiature or D-sub
Commonly used for RS-232
Serial communications standard
Now used as a configuration port

30
Q
A