Ethernet standards Flashcards
What is the ethernet standard for “Fast Ethernet”
100BaseTX
Generally, what is the distance range for MMF
33-400m
What is the range and cabling used in 100BASEFX?
2km (with repeaters), Fiber OM1
What cabling does 100BaseSX use
OM1, 2
True or false: 1000baseT and later nics could handle full duplex
True
Does full duplex add speed or bandwidth to a network?
Bandwidth. With duplexing, one road of cars going 60mph becomes two roads going 60mph
What are SFF connectors
A new series of connectors made after Snap Twist and Snap Connect because they were too big. The new connectors are LC and MTRJ.
What do UPC and APC fiber mean.
These refer to how the fiber connectors touch one another inside the device it’s plugged into. Different versions have different benefits.
Ultra physical contact - Rounded
Angles physical contact- Angled, predominant
You see a fiber connector called “SC/APC” what does it mean
Snap Connector, Angled Physical Contact
What are the three 1000base versions
T, SX and LX
When it comes to 100 and 1000 base standards, what does the T and X mean in the names?
T implies UTP, X implies fiber is used.
What is the fiber type used for 1000BaseSX and the distance it can reach
MMF, 500m
What is the length of 1000BaseLX cabling and what type is it
Single mode OS1 or 2 fiber at 5km (5000m)
True or false: The faster the connection must be, the shorter the range of your cabling will become
True, because the speed drops off
What is a media converter?
It changes the method of data travel when leaving your network, allowing it to connect to other types. For example, UTP to fiber.
When referring to fiber nm, what does it mean?
Nano meters is a measurement used to measure the length of a single wave traveling through a fiber cable. Longer waves go further.
What is a GBIC transceiver?
A gigabit interface converter transceiver will convert the signal going into a device from one type to another. MMF>SMF, UTP>Fiber, etc. In other words, it enables communication between device and cable.
What is a SFP
A small formfactor pluggable is a small version of a transceiver.
What’s the difference between a media converter and a SFP/Transceiver?
A media converter converts an outgoing connection on your network
A transceiver allows a cable and specific device to communicate by converting the signal.
What is a BiDi transceiver?
A Bidirectional transceiver removes the need for two fiber cables (one to send and one to receive) by sending both signals over the same piece of fiber.
What is a QSFP+
An SFP that can do 40gbps
When it comes to 10G networks, what do the xR and xW nomenclature imply?
R is for LAN purposes, W is for WAN purposes.
What are the three types of 10G standards?
S, L and E. Short, Long and Extra.
What is the cable length, type and nm width of 10GBaseSR and SW
33-500m over MMF with 850nm wavelengths
What is the first standard to use Single mode fiber?
1000BaseLX
True or false: Of the three categories of 10G standards (S, L and E) the only one to use SMF is E
False. L and E use it.
What is the cable length, type and nm width of 10GBaseLR and LW
10km singlemode fiber with 1310nm wavelength
What is the cable length, type and nm measurement of 10GbaseER and EW
40km Single mode fiber with 1550nm wavelength
True or false: 1000baseFX exists
False. FX only exists within 100base.
With 100BASE-T, what is the maximum distance between the switch and the node?
A. 1000 meters
B. 400 meters
C. 100 meters
D. 150 meters
100 meters
What type of cable and connector does 100BASE-FX use?
A. Multimode fiber with ST or SC connectors
B. STP Cat 6 with RJ-45 connectors
C. Single-mode fiber with MT-RJ connectors
D. UTP Cat 5e with RJ-45 connectors
Multimode fiber with ST or SC connectors
(Anything below 1000 Base will use ST and SC and anything above will use LC and MTRJ)
Which of the following connector would you typically find with a 40 GbE installation?
A. LC
B. SFP
C. QSFP+
D. XSFP+
QSFP+
What standard does IEEE 802.3ab describe?
A. 1000BASE-LX
B. 1000BASE-T
C. 100BASE-T
D. 1000BASE-SX
1000BASE-T
What is the big physical difference between 1000BASE-SX and 100BASE-FX?
A. 1000BASE-SX commonly uses the LC connector, whereas 100BASE-FX frequently uses the SC connector.
B. 1000BASE-SX is single-mode, whereas 100BASE-FX is multimode.
C. 1000BASE-SX uses the ST connector exclusively.
D. There is no difference.
1000BASE-SX commonly uses the LC connector, whereas 100BASE-FX frequently uses the SC connector.
What is the maximum distance for 1000BASE-LX without repeaters?
A. 1 mile
B. 2500 meters
C. 20,000 feet
D. 5000 meters
5000 meters
What is a big advantage to using fiber-optic cable?
A. Fiber is common glass; therefore, it’s less expensive.
B. Fiber is not affected by EMI.
C. Making custom cable lengths is easier with fiber.
D. All that orange fiber looks impressive in the network closet.
Fiber is not affected by EMI.
How many wire pairs does 1000BASE-T use?
A. 1
B. 2
C. 3
D. 4
4
What is the standard connector for the 10 GbE fiber standard?
A. ST
B. SC
C. MT-RJ
D. There is no standard.
There is no standard.
What is the maximum cable length of 10GBASE-T on Cat 6?
A. 55 meters
B. 100 meters
C. 20 meters
D. 70 meters
55 meters
