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CCNA > Ethernet LANs > Flashcards

Ethernet LANs Flashcards

1
Q

Refers to LAN standards that define the physical and data link layers used by the popular wired technologies.

A

Ethernet

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2
Q

Fast Ethernet Speed

A

100Base T

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3
Q

1 Gbps fiber

A

1000Base LX

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4
Q

Gigabit Ethernet

A

1000BaseT

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5
Q
  1. 3
  2. 3a
  3. 3ab
  4. 3z
  5. 3an
A 
Eth
Fast Eth
Gig Eth
GIg Eth fiber
10Gig eth
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6
Q

Connect pins on one to the same pins on the other side

A

Straight through cables

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7
Q

Device that would use crossover with Hub

A

switch

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8
Q

Devices that would use a crossover with PC NIC

A

WAP, Router

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9
Q

crossover pairs

A

1,2->3,6

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10
Q

crossover pairs for 1000 Base T

A

4,5 ->7,8

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11
Q

Fiber uses LED source

A

multimode

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12
Q

Fiber uses LASER

A

singlemode

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13
Q

Copper wire distance

A

100m

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14
Q

FIber distance 100 BAse LX

A

5000m

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15
Q

Less expensive and improves max distances over UTP

A

Multimode

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16
Q

UTP Cost of cabling

Cost of switchport

A

Low

Low

17
Q

MM Cost of cabling

cost of switchport

A

Med

Med

18
Q

SM COst of cabling

cost of switchport

A

Med

High

19
Q

UTP max distance

A

100m

20
Q

MM max distance

A

500m

21
Q

SM MAX distance

A

40km

22
Q

Has some risk of intereference and copying cable emiisions

A

UTP

23
Q

Ethernet Headers

A 
Preamble 7
Start frame delimiter 1
Dest Mac 6
Src mac 6
Type 2
Data 46-1500
FCS 4
24
Q

Half Duplex

A

Cannot transmit and receive at the same time.

25
Q

Full Duplex

A

Device can send and receive at the same time

26
Q

Use CSMA/CD, Half-duplex

A

LAN Hubs

27
Q

Ethernet shared media

A

refers to designs that use hubs

28
Q

Ethernet point to point

A

where each link works independently of the others

29
Q

Light reflects of this in fiber

A

cladding

30
Q

Used for error detectiion in ethernet trailer

A

Frame Check Sequence

CCNA (17 decks)

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