Section 1.3 Flashcards
Cat 3
speed
distance
cable
10Mbps
100m
UTP
Cat 5
speed
distance
cable
100Mbps
100m
UTP
Cat 5e
speed
distance
cable
1Gbps
100m
UTP
Cat 6
speed
distance
cable
1Gbps
100m
UTP/STP
10Gbps
55m
UTP/STP
Cat 6a
speed
distance
cable
10Gbps
100m
STP
Cat 7
speed
distance
cable
10Gbps
100m
S/FTP
Cat 8
speed
distance
cable
25-40Gbps
30m
S/FTP
List all categories of ethernet cables
Cat 3, 5, 5e, 6, 6a, 7, and 8
What does UTP stand for?
Unshielded Twisted Pair
What does STP stand for?
Shielded Twisted Pair
What does S/FTP stand for?
Shielded and Foiled Twisted Pair
List the 5 ethernet transmission standards.
10BASE-T
100BASE-TX
1000BASE-T
10GBASE-T
40GBASE-T
Which ethernet cables use the 1000BASE-T ethernet transmission standard?
Cat 5 and 5e
Which ethernet cables use the 10GBASE-T ethernet transmission standard?
Cat 6, 6a, and 7
Which ethernet cables use the 40GBASE-T ethernet transmission standard?
Cat 8
What’s the technical term for the common coaxial cable used for tv and internet?
RG-6
What’s the difference in speed and distance between coaxial and twinaxial cables?
Coax: 1Gbps, 150m
Twinax: 10Gbps, 15m
Which ethernet cables use the 10BASE-T ethernet transmission standard?
Cat 3
Which ethernet cables use the 100BASE-TX ethernet transmission standard?
Cat 5
What are the ISO/IEC 11801 and ANSI/TIA-568?, and what’s the difference?
ISO/IEC 11801 is the international structured cabling system standard
ANSI/TIA-568 is the US based structured cabling system standard
Which ethernet cable standard starts with white and green?
T568A
Which ethernet cable standard starts with white and orange?
T568B
What are the colors of a T568A ethernet cable?
1 white and green
2 green
3 white and orange
4 blue
5 white and blue
6 orange
7 white and brown
8 brown
What are the colors of a T568B ethernet cable?
1 white and orange
2 orange
3 white and green
4 blue
5 white and blue
6 green
7 white and brown
8 brown
Which pins of both T568A and T568B are identical?
Pins 4, 5, 7, and 8
What type of light is used for single-mode fiber, and what’s the max distance?
Laser, 100km
What type of light is used for multi-mode fiber, and what’s the max distance?
LED, 2km
LC, its use, and connector style?
Local Connector, used for fiber, latch style
ST, its use, and connector style?
Straight Tip, used for fiber, bayonet style twist on/off
SC, its use, and connector style?
Subscriber Connector, used for fiber, push-pull snapping style
MT-RJ, its use, and connector style?
Mechanical Transfer Registered Jack, used for dual-fiber, latch style
RJ, its use, and connector style?
Registered Jack, used for copper, latch style
Why use APC instead of UPC for fiber? What do these stand for?
Angle-Physical Contact and Ultra-Physical Contact. APC has an 8 degree angle to reflect light away, lowering return loss. UPC is flat, so there is more return loss from reflected light.
What are RJ11 connectors commonly used for?
Telephone and DSL
What type of connector is used for coaxial/RG-6 cables?
F-connector
How do you convert copper signals to fiber and vice versa?
using a Media Convertor
What are transceivers?
They are basically media convertors that plug-in into network devices.
How many connections are in a basic transceiver and what do they do?
There are usually 2 connections. One for transmit and one for receive.
What type of transceiver is used to transmit and receive on a single fiber? And how is this done?
BiDi, or Bi-Directional transceivers. The fiber carries two different wavelengths.
What does SFP stand for?
Small Form-factor Pluggable
What’s the bandwidth of SFP?
1 Gbps
What’s the bandwidth of SFP+?
10 Gbps
What’s the bandwidth of QSFP?
4 Gbps
What does QSFP stand for?
Quad Small Form-factor Pluggable
What’s the bandwidth of QSFP+?
40 Gbps
Could you increase efficiency beyond QSFP and QSFP+? How?
Yes, by using BiDi QSFP and QSFP+ transceivers
What does the + in SFP+ and QSFP+ stand for?
Enhanced
Why is a patch panel/bay useful?
Because it allows you to organize all of the network cabling in one central location.
What is the patch panel equivalent for fiber optics called?
Fiber Distribution Panel
What are the differences between 66, 110, Krone, and BIX punchdown blocks?
66 Block is older and used primarily for voice communications up to Cat 3.
110 Block is used for modern data networks up to Cat 5e and 6.
Krone Block is the European standard similar to 110 Block.
BIX is the Canadian standard also similar to 110 Block.
100BASE-FX
speed
distance
mode
100Mbps
short distance
multimode fiber
100BASE-SX
speed
distance
mode
100Mbps
short distance
multimode fiber
1000BASE-SX
speed
distance
mode
1Gbps
short distance
multimode fiber
1000BASE-LX
speed
distance
mode
1Gbps
long distance
singlemode fiber
10GBASE-SR
speed
distance
mode
10Gbps
short distance
multimode fiber
10GBASE-LR
speed
distance
mode
10Gbps
long distance
singlemode fiber
What do CWDM and DWDM stand for?
Coarse Wavelength Division Multiplexing
Dense Wavelength Division Multiplexing
What’s the difference between CWDM and DWDM? Spacing, Channels, and Distance type?
CWDM: 20nm wavelength spacing resulting in up to 18 channels, good for shorter distances
DWDM: 0.8nm wavelength spacing resulting in up to 160 channels, good for longer distances
Fiber Speed standards
100/1000/10G/40G/100G
Fiber Distance standards
S = Short
L = Long
E = Extended
Z = Very Extended
Fiber Mode standards
S/F = Multimode
L/E/Z = Singlemode