Comptia A+ > Chapter 2 - Connectivity > Flashcards

Chapter 2 - Connectivity Flashcards

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1
Q

Which color traditionally identifies the PS/2 mouse port?

A

Green

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2
Q

Which color traditionally identifies the PS/2 keyboard port?

A

Purple

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3
Q

What is the 6-pin mini-DIN used for keyboard and mouse called?

A

PS/2 port

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4
Q

Which legacy 9-pin male connector is also called DB9 or RS-232?

A

Serial port (RS-232)

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5
Q

What is the maximum number of devices supported by a single USB host controller?

A

127

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6
Q

What is a bus-powered USB hub?

A

A hub that draws power from the host’s USB port (no external supply).

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7
Q

What is a self-powered USB hub?

A

A hub with its own external power supply (powered hub).

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8
Q

Fill-in-the-blank: A ‘sleep-and-charge’ USB port can ____ a device when the computer is off.

A

charge

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9
Q

What is the purpose of a USB hub?

A

To connect multiple devices to a single USB port.

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10
Q

Common color used to identify a USB 2.0 (Hi-Speed) port?

A

Black (often).

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11
Q

Common color used to identify a USB 3.0 (SuperSpeed) port?

A

Blue (often).

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12
Q

USB 2.0 maximum data rate?

A

480 Mb/s

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13
Q

USB 3.0 (SuperSpeed) maximum data rate?

A

5 Gb/s

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14
Q

USB 3.1 Gen 2 (SuperSpeed+) maximum data rate?

A

10 Gb/s

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15
Q

USB 3.2 Gen 2x2 maximum data rate?

A

20 Gb/s

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16
Q

What is USB On-The-Go (OTG) used for?

A

Direct device-to-device USB connections without a host PC.

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17
Q

What is the modern reversible USB connector type?

A

USB Type-C

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18
Q

Which Apple proprietary 8-pin reversible connector was used on iPhones before USB-C?

A

Lightning

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19
Q

Which multipurpose interface can carry PCIe, DisplayPort video, data, and power?

A

Thunderbolt

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20
Q

Who developed Thunderbolt technology?

A

Intel (with Apple collaboration).

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21
Q

Which connector does Thunderbolt 3 use?

A

USB Type-C

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22
Q

What notable capability did Thunderbolt 3 add?

A

Native support for USB devices.

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23
Q

Thunderbolt 3 maximum data rate?

A

40 Gb/s

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24
Q

Maximum number of devices in a Thunderbolt daisy chain?

A

Up to 6

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25
Thunderbolt 4 maximum data rate?
40 Gb/s
26
What is an eSATAp port?
A port that accepts eSATA or USB and also provides power.
27
Which 15-pin, 3-row connector carries analog video and is often blue?
VGA
28
Which DVI type carries only digital video?
DVI-D
29
Which DVI type carries both digital and analog signals?
DVI-I
30
What does HDMI carry over a single cable?
Digital video and audio.
31
What is a key advantage of DisplayPort over older interfaces?
Supports higher resolutions and refresh rates.
32
What DisplayPort feature enables multiple monitors from one port?
MST (Multi-Stream Transport).
33
What is a limitation when using a DVI-to-HDMI adapter from a DVI source?
DVI does not carry audio.
34
What is the purpose of a DVI-to-HDMI adapter?
Connect a DVI device to an HDMI display (or vice versa).
35
Which two connector types does S/PDIF use?
RCA coaxial and TOSLINK fiber-optic.
36
What is the primary function of a sound card?
Converts between digital audio data and analog sound (and vice versa).
37
Why install a discrete sound card over onboard audio?
Improved audio quality and features.
38
Which connector with 8 positions is used for Ethernet?
RJ45 (8P8C)
39
Which connector with 6 positions is used for phone lines?
RJ11 (6P2C/6P4C)
40
Main physical difference between RJ45 and RJ11?
RJ45 is wider with 8P8C; RJ11 is narrower with 6P2C/6P4C.
41
Which copper cable and connector are common for cable TV?
Coaxial cable with F-type connector.
42
Which locking connector is used with coax for video/CCTV?
BNC
43
What is the common maximum length for a copper Ethernet run?
100 meters (328 ft).
44
Cat 5e supports up to what Ethernet speed?
1 Gb/s (1000BASE-T).
45
Cat 6 performance compared to Cat 5e?
Higher frequency (250 MHz); 1 Gb/s to 100 m, 10 Gb/s up to ~55 m.
46
Cat 6a supports up to what speed and distance?
10 Gb/s to 100 m.
47
What is the purpose of a crossover cable?
Directly connect similar devices without a switch.
48
What feature reduces the need for crossover cables?
Auto-MDI/MDI-X.
49
What does PoE stand for?
Power over Ethernet.
50
Which PoE standard provides up to ~15.4 W at the port?
IEEE 802.3af (PoE).
51
Which PoE standard provides up to ~30 W at the port?
IEEE 802.3at (PoE+).
52
Which PoE standard can deliver 60–90+ W?
IEEE 802.3bt (PoE++/Type 3 & 4).
53
UTP vs STP: primary difference?
STP adds shielding to reduce interference; UTP does not.
54
What term describes interference between adjacent pairs in UTP?
Crosstalk.
55
In which building spaces must plenum-rated cable be used?
Air-handling spaces (plenums).
56
What jacket material is a cheaper, non-plenum alternative?
PVC (polyvinyl chloride).
57
Which rating is used for vertical riser spaces?
CMR (riser-rated).
58
Which standards define the pair order in an RJ45 plug?
T568A and T568B.
59
What tool is used to terminate wires into a patch panel?
Punchdown tool.
60
What tool is used to crimp RJ45 plugs onto UTP cable?
Crimping tool.
61
What tool pair helps trace hidden cables?
Tone generator and probe.
62
What device verifies cable pinout and continuity?
Cable tester.
63
What simple plug tests a NIC's transmit/receive path?
Loopback plug.
64
What is a patch panel used for?
Terminate and cross-connect horizontal cabling in a rack.
65
What is a keystone jack?
Snap-in modular connector for patch panels and wall plates.
66
Which fiber type uses a single light path for long distances?
Single-mode fiber (SMF).
67
Which fiber type uses multiple light paths for shorter distances?
Multi-mode fiber (MMF).
68
Which fiber connector uses a bayonet twist-lock?
ST
69
Which small form-factor fiber connector uses a retaining clip?
LC
70
Which square, push-pull fiber connector is common?
SC
71
Which medium is most immune to electromagnetic interference (EMI)?
Fiber-optic cabling.
72
Which cabling is typically used for video distribution networks?
Coaxial cabling.
73
Which cabling is best for long-distance, high-bandwidth data?
Fiber cabling.
74
Which short-range wireless technology enables tap-to-pay?
NFC (Near Field Communication).
75
Which wireless technologies commonly connect input devices to a PC?
Bluetooth or 2.4 GHz RF; IR for some remotes.
76
What is a motherboard header?
A set of pins on the motherboard for specific connectors (e.g., USB, audio).
77
Give two examples of devices connected via motherboard headers.
Front-panel USB and front-panel audio.
78
How can you add more rear USB ports without an external hub?
Use a bracket/cable connected to an internal USB header.
79
Besides USB, which port appears on a USB-to-Ethernet adapter?
RJ45 Ethernet port.
80
What is the difference between analog and digital signals?
Analog is continuous and variable; digital uses discrete 1s and 0s.
Comptia A+
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