Media and Cabling Flashcards
(140 cards)
2
Q
A
3
Q
What does ‘media’ mean in networking?
A
Physical data transmission material
4
Q
What are the three main types of network media?
A
- Copper
- Fiber
- Radio waves
5
Q
Give an example of copper media use.
A
Cat6A cable for desktops
6
Q
Give an example of fiber media use.
A
ISP connection via fiber optic
7
Q
Give an example of RF media use.
A
Wi-Fi for smartphones
8
Q
What does RF stand for?
A
Radio Frequency
9
Q
What media is used in Wi-Fi?
A
Radio waves
10
Q
What is the main focus of this section (CompTIA domain)?
A
Domain 1, Objective 1.5
11
Q
What is another related domain in this topic?
A
Domain 5, Objective 5.5
12
Q
What standard defines Ethernet over copper?
A
IEEE 802.3
13
Q
Why are pairs twisted in cables?
A
Reduce EMI and crosstalk
14
Q
What is a common copper cable type?
A
Twisted pair
15
Q
What are the main twisted pair categories?
A
- UTP
- STP
16
Q
What does UTP stand for?
A
Unshielded Twisted Pair
17
Q
What does STP stand for?
A
Shielded Twisted Pair
18
Q
What is an advantage of UTP?
A
Cheap and easy to install
19
Q
What is a drawback of UTP?
A
Weak EMI protection
20
Q
What is an advantage of STP?
A
Strong EMI resistance
21
Q
What is a drawback of STP?
A
Bulkier and costlier
22
Q
What is the max speed and distance of CAT 5?
A
100 Mbps, 100m
23
Q
What is the speed and distance of CAT 5e?
A
1 Gbps, 100m
24
Q
What speed does CAT 6 support at 100 meters?
A
1 Gbps
25
Q
What speed does CAT 6 support at 55 meters?
A
10 Gbps
26
What is the speed and distance of CAT 6a?
10 Gbps, 100m
27
What is the max speed of CAT 7?
10 Gbps
28
What is the speed and distance of CAT 8?
25–40 Gbps, 30m
29
Is CAT 7 TIA/EIA approved?
No
30
What is the design of coaxial cable?
Single core + shielding
31
What is RG-6 used for?
Broadband internet, digital video
32
What is RG-59 used for?
Analog video, CCTV (obsolete)
33
Which has better shielding, RG-6 or RG-59?
RG-6
34
What is the design of twinaxial cable?
Two copper conductors + shield
35
What is twinax cable used for?
SFP+, QSFP data center links
36
What speeds does twinax support up to?
100 Gbps
37
What are DAC cables?
Prebuilt copper for short-range
38
What is the max length of passive DAC?
7 meters
39
What is the max speed of active DAC?
100 Gbps
40
Which copper is used inside walls?
UTP/STP (depends on shielding/fire rating)
41
What is a plenum-rated cable feature?
Fire-retardant jacket
42
What is the use case for plenum cable?
Air circulation spaces
43
What is the risk of non-plenum cable?
More smoke/toxic fumes
44
What are fire-safe cable types?
* PVC
* FEP jackets
45
Which costs more: plenum or non-plenum?
Plenum
46
What does RJ stand for?
Registered Jack
47
What does RG stand for?
Radio Guide
48
How many wires does RJ-11 use?
2 (6P2C)
49
What is the main use of RJ-11?
Telephones
50
What is the pin layout of RJ-45?
8P8C
51
What is RJ-45 used for?
Ethernet/data networks
52
What cables support RJ-45?
* Cat 5
* Cat 6
* Cat 7
* Cat 8
53
What is the shape of an F-Type connector?
Screw-on
54
What cables are F-Type used with?
* RG-6
* RG-59
55
What is F-Type used for?
Cable TV, satellite
56
What is the lock type of a BNC connector?
Push-and-twist (bayonet)
57
Where is BNC used?
Video, RF, surveillance
58
What connector resists vibration?
BNC
59
What is the older coaxial connector still seen in CCTV?
RG-59
60
What is the best coaxial for high-frequency internet?
RG-6
61
What tool is used to remove cable jacket?
Cable stripper
62
What tool is used to attach connector to cable?
Cable crimper
63
What tool is used to verify pinouts?
Cable tester
64
Which tool creates RJ-45 terminations?
Crimper
65
What tool is used to validate straight/crossover?
Cable tester
66
What is the use of a straight-through cable?
DTE ↔ DCE
67
What is the use of a crossover cable?
DTE ↔ DTE
68
What is the color of 568B pin 1?
Orange/White
69
What is the color of 568B pin 2?
Orange
70
What is the color of 568B pin 3?
Green/White
71
What is the color of 568A pin 1?
Green/White
72
What is the color of 568A pin 3?
Orange/White
73
Which pins are swapped in a crossover?
1, 2, 3, 6
74
Which pinout do patch cables usually use?
568B both ends
75
Which is more common: 568A or 568B?
568B
76
How does fiber send data?
Light
77
What are the two types of fiber?
* SMF
* MMF
78
Why is fiber immune to EMI?
No electricity used
79
What is the max distance for fiber?
Hundreds of miles
80
What is the speed potential of fiber?
100+ Gbps
81
What limits fiber speed?
Networking hardware
82
What is the main cost drawback of fiber?
Higher cable and tool price
83
Why is fiber harder to install?
Requires skill/tools
84
What is the sheath color of SMF?
Yellow
85
What is the sheath color of MMF?
Aqua blue or orange
86
Which fiber has a smaller core?
SMF (~8–10 microns)
87
What is the core size of MMF?
~50–100 microns
88
What is the main use of SMF?
Long distance
89
What is the use case for MMF?
Short range (buildings, data centers)
90
What is an advantage of MMF over copper?
Better EMI resistance
91
Why does MMF have more dispersion?
Multiple light paths
92
What does an orange fiber clue indicate?
MMF
93
What is the distance range for MMF?
< 2000 meters
94
What is an example use of SMF?
Inter-building, WAN
95
What is an example use of MMF?
Internal links, patch cables
96
What is the shape of an SC connector?
Square
97
What is the shape of an ST connector?
Round
98
What is the shape of an LC connector?
Compact
99
What type is an MTRJ connector?
RJ-style, dual fiber
100
What type is an MPO connector?
Multi-fiber, push-on
101
What is the locking mechanism of SC?
Push-pull
102
What is the locking type of ST?
Twist-lock
103
What connector is used for dense setups?
LC
104
What is the best connector for vibration resistance?
ST
105
What connector is used in FTTH?
SC
106
Which connector has the highest port density?
LC
107
Which connector has the highest capacity?
MPO
108
What does MTP stand for?
Multi-Fiber Push On
109
What polish type has the least reflection?
APC
110
Which performs better: UPC or PC?
UPC
111
Which polish has an angled end?
APC (8°)
112
What is the best polish for long-distance links?
APC
113
What is a trait of PC polish?
Slight curve, low cost
114
What is a trait of UPC polish?
Domed, improved alignment
115
What is the APC color code?
Green
116
What is the UPC color code?
Blue
117
What is the PC color code?
Beige or black
118
What is a transceiver?
Transmitter + receiver
119
What is the main use of a transceiver?
Media/protocol conversion
120
Give an example of protocol conversion.
Ethernet ↔ Fiber Channel
121
Give an example of media conversion.
Fiber ↔ copper
122
At which OSI layer do transceivers operate?
Layer 1
123
In which environments is fiber-to-copper conversion used?
Desktop, military
124
What does SFP stand for?
Small Form-Factor Pluggable
125
What is the max speed of SFP?
~4.25 Gbps
126
What is the max speed of SFP+?
~16 Gbps
127
What speeds does QSFP support?
Up to 40 Gbps
128
What does QSFP56 support up to?
200 Gbps
129
Why are transceivers hot-swappable?
Avoid downtime
130
What is a use case for QSFP?
Data center backbones
131
What transceiver is needed for a copper-fiber bridge?
Media converter
132
What is the max cable length for Cat 5/6?
100 meters
133
What is the ideal practical cable length?
<90 meters
134
What does MDIX remove the need for?
Crossover cable
135
Which cable to use between switches (no MDIX)?
Crossover
136
What is the toolset price for cable practice?
~$10
137
What is the pinout for straight-through cable?
568B both ends
138
What is the pinout for crossover cable?
568B ↔ 568A
139
What color code is used for SMF fiber?
Yellow
140
Which cables are hot-swappable?
* SFP
* QSFP
141
What causes dispersion in MMF?
Multiple light paths
