Common Copper and Fibre Physical Issues Flashcards Preview

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Flashcards in Common Copper and Fibre Physical Issues Deck (18)
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1

What are the 2 Main CAT Cabling Standards

T-568A and T568B

2

Why are there twists in the UTP Cable

To Minimize Electrical Interference

3

Why are some cable pairs twisted differently

To keep the internal pairs out of phase with each other

4

In a T-568A cable which pins are used for data transmission

1, 2, 3 and 6

5

In a T-568A cable, what is the recommended length

100m

6

What are the 2 typical Fibre cables used

MM and SM

7

What 3 components make up a fibre cable

Buffer, Cladding, Core

8

What are the 4 common connector types for Fibre

ST, SC, FC and LC

9

What command do you use to see Interface Status and Protocol

sh ip interface brief (Status - L1, Protocol - L2 of OSI model)

10

What command do you use to see Interface Duplex, Speed and Type

sh interface status

11

If an interface is set to 100 Full and the other connecting interface is set to Auto - what will the effective speed be?

If one side is set to Auto then the interface defaults to 100Mbps Half Duplex

12

What interface command will check for collisions

sh interface

13

What Errors are Summarized in the Interface Input Error Counter

Runts, Giants, CRC, Frame

14

What is a late collision

collision occurred after first 512 bytes of Frame

15

Ethernet cables follow strict specifications that dictate the correct order of the individual wires in the tips of the cable. Failure to follow these specifications prevents the proper electromagnetic field from forming and shielding the wires from interference. True or false?

True

16

Which command allows you to see the high-level status as well as a brief description, configured by a network administrator, of each interface on a Cisco switch?

show interface status

17

If a 10/100 FastEthernet port is unable to detect speed and duplex through auto-detection methods, which settings does it use?

Speed 100 Duplex Half

18

A CRC error is a frame with errors in its ....... Hash

FCS