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CTAN+1938 (Outdated, bad info) > Ethernet standards > Flashcards

Ethernet standards Flashcards

1
Q

What is the ethernet standard for “Fast Ethernet”

A

100BaseTX

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2
Q

Generally, what is the distance range for MMF

A

33-400m

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3
Q

What is the range and cabling used in 100BASEFX?

A

2km (with repeaters), Fiber OM1

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4
Q

What cabling does 100BaseSX use

A

OM1, 2

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5
Q

True or false: 1000baseT and later nics could handle full duplex

A

True

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6
Q

Does full duplex add speed or bandwidth to a network?

A

Bandwidth. With duplexing, one road of cars going 60mph becomes two roads going 60mph

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7
Q

What are SFF connectors

A

A new series of connectors made after Snap Twist and Snap Connect because they were too big. The new connectors are LC and MTRJ.

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8
Q

What do UPC and APC fiber mean.

A

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

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9
Q

You see a fiber connector called “SC/APC” what does it mean

A

Snap Connector, Angled Physical Contact

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10
Q

What are the three 1000base versions

A

T, SX and LX

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11
Q

When it comes to 100 and 1000 base standards, what does the T and X mean in the names?

A

T implies UTP, X implies fiber is used.

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12
Q

What is the fiber type used for 1000BaseSX and the distance it can reach

A

MMF, 500m

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13
Q

What is the length of 1000BaseLX cabling and what type is it

A

Single mode OS1 or 2 fiber at 5km (5000m)

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14
Q

True or false: The faster the connection must be, the shorter the range of your cabling will become

A

True, because the speed drops off

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15
Q

What is a media converter?

A

It changes the method of data travel when leaving your network, allowing it to connect to other types. For example, UTP to fiber.

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16
Q

When referring to fiber nm, what does it mean?

A

Nano meters is a measurement used to measure the length of a single wave traveling through a fiber cable. Longer waves go further.

17
Q

What is a GBIC transceiver?

A

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.

18
Q

What is a SFP

A

A small formfactor pluggable is a small version of a transceiver.

19
Q

What’s the difference between a media converter and a SFP/Transceiver?

A

A media converter converts an outgoing connection on your network
A transceiver allows a cable and specific device to communicate by converting the signal.

20
Q

What is a BiDi transceiver?

A

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.

21
Q

What is a QSFP+

A

An SFP that can do 40gbps

22
Q

When it comes to 10G networks, what do the xR and xW nomenclature imply?

A

R is for LAN purposes, W is for WAN purposes.

23
Q

What are the three types of 10G standards?

A

S, L and E. Short, Long and Extra.

24
Q

What is the cable length, type and nm width of 10GBaseSR and SW

A

33-500m over MMF with 850nm wavelengths

25
Q

What is the first standard to use Single mode fiber?

A

1000BaseLX

26
Q

True or false: Of the three categories of 10G standards (S, L and E) the only one to use SMF is E

A

False. L and E use it.

27
Q

What is the cable length, type and nm width of 10GBaseLR and LW

A

10km singlemode fiber with 1310nm wavelength

28
Q

What is the cable length, type and nm measurement of 10GbaseER and EW

A

40km Single mode fiber with 1550nm wavelength

29
Q

True or false: 1000baseFX exists

A

False. FX only exists within 100base.

30
Q

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

A

100 meters

31
Q

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

A

Multimode fiber with ST or SC connectors
(Anything below 1000 Base will use ST and SC and anything above will use LC and MTRJ)

32
Q

Which of the following connector would you typically find with a 40 GbE installation?
A. LC
B. SFP
C. QSFP+
D. XSFP+

A

QSFP+

33
Q

What standard does IEEE 802.3ab describe?
A. 1000BASE-LX
B. 1000BASE-T
C. 100BASE-T
D. 1000BASE-SX

A

1000BASE-T

34
Q

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.

A

1000BASE-SX commonly uses the LC connector, whereas 100BASE-FX frequently uses the SC connector.

35
Q

What is the maximum distance for 1000BASE-LX without repeaters?
A. 1 mile
B. 2500 meters
C. 20,000 feet
D. 5000 meters

A

5000 meters

36
Q

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.

A

Fiber is not affected by EMI.

37
Q

How many wire pairs does 1000BASE-T use?
A. 1
B. 2
C. 3
D. 4

A

4

38
Q

What is the standard connector for the 10 GbE fiber standard?
A. ST
B. SC
C. MT-RJ
D. There is no standard.

A

There is no standard.

39
Q

What is the maximum cable length of 10GBASE-T on Cat 6?
A. 55 meters
B. 100 meters
C. 20 meters
D. 70 meters

A

55 meters

CTAN+1938 (Outdated, bad info) (15 decks)

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