Ethernet Standards

Question 1

Gigabit ethernet or 1000 mb standards

Answer 1

1000BaseCX uses Twinax ( Coaxial Cable ) 25 meters
1000BaseSX uses Multimode Fiber with distances up to 500 m
1000BaseLX uses Singlemode Fiber with distances up to 5 km
1000BaseT uses CAT 6 with distances up to 500 m

Question 2

10 Gigabit Ethernet standard ethernet LANS

Answer 2

10GBaseT - uses Cat 6 up to ( 55m in length ) & Cat 6a ( up to 100m )
10GBaseSR - Multimode Fiber - in lengths ( 26m to 400m )
10GBaseLR - Singlemode Fiber - in lengths ( 1310NM up to 10 km )
10GBaseER - Singlemode Fiber - in lengths ( 1550 nm up to 40km )

Question 3

old school Sonet version of 10 gb standards uses same values as 10GB ethernet standards but designed for Hi End, Tier 1, internet:

Answer 3

10GBaseSW - Multimode Fiber - in lengths ( 26m to 400m )
10GBaseLW - Singlemode Fiber - in lengths ( 1310NM up to 10 km )
10GBaseEW - Singlemode Fiber - in lengths ( 1550 nm up to 40km

Question 4

What is it called when you use Transceivers / modules that allows you to use one switch but have different fiber connectors from various vendors:

Answer 4

Multi-source Agreement (MSA)

Question 5

1st generation transceiver is known as a:

Answer 5

” GBIC “uses ST and SC connectors

Question 6

Smaller transceivers for LC and MTR-J connectors are called:

Answer 6

Small Form Factor Pluggable ( SFP )
Enhanced Small Form Factor Pluggable is ( SFP+ )

Question 7

Transceivers designed for 40gb ethernet is called:

Answer 7

Quad Small form factor pluggable ( QSFP )

Question 8

Transceivers that use different color lasers to send and receive over the same single mode cable is called:

Answer 8

” BIDI “ or Bidirectional

Question 9

This helps to avoid bridging loops by turning off one of the ports on the primary switch or router:

Answer 9

Spanning Tree Protocol ( STP )

Question 10

What is used when Layer 2 attacks from inside your network that is causing a flooding effect like sending multiple MAC addresses on one port. Smart switches use this, similar to STP where it will turn off the port until someone comes in and turns it back on:

Answer 10

Flood Guard

Question 11

To avoid a network slowdown due to speed mismatch:

Answer 11

Match switch speeds to network speeds

Question 12

Proper switch configuration will avoid:

Answer 12

Bridging Loops

Question 13

When using an Uplink to regular port use what type of cable?

Answer 13

Straight-through Cable

Question 14

When going from regular port to regular port on a switch, use what type of cable?

Answer 14

Crossover Cable

Question 15

When going from Uplink to Uplink port use what type of cable?

Answer 15

Crossover Cable

Question 16

Today’s switches have auto-sensing ports so they can use what type of cable?

Answer 16

Straight-Through