Section 5 - Modern Ethernet

Question 1

Which signal mode allows both sides of a conversation to occur at the same time?

Answer 1

Full-duplex mode

Question 2

100BaseT (a.k.a., 100BaseTX) runs at __ Mbps up to 100 meters.

Answer 2

100 Mbps

Question 3

100BaseFX runs at 100 Mbps up to 2 kilometers and indicates which type of cabling?

Answer 3

Fiber-optic

Question 4

What is a cable called that uses the same wiring scheme when terminating both ends?

Answer 4

Straight-through cable

Question 5

What is a cable called that uses different wiring schemes when terminating both ends?

Answer 5

Crossover cable

Question 6

When connecting two legacy switches together to make one backbone, which type of cable should be used to create the connection?

Answer 6

Crossover cable

Question 7

1000BaseCX uses __ and runs up to 25 meters.

A) Twincx
B) Twinax
C) Twinac

Answer 7

B) Twinax

Question 8

Which option below indicates UTP cable is being used on the network?

A) 10GBaseLR
B) 1000BaseCX
C) 1000BaseSX
D) 1000BaseT
E) 10GBaseSR
F) 1000BaseLX

Answer 8

D) 1000BaseT

Question 9

Provide all five network terms used to indicate fiber-optic cabling is being used.

Answer 9

1000BaseSX
1000BaseLX
10GBaseSR
10GBaseLR
10GBaseER

Question 10

Provide all three network terms used to indicate UTP cabling is being used.

Answer 10

1000BaseT

10GBaseT

Question 11

SFP and SFP+ are __ __ transceivers.

Answer 11

Small form-factor

Question 12

What is the SFP standard designed for 40 Gbps Ethernet?

Answer 12

QSFP

Question 13

How does a bridging loop occur?

Answer 13

When two or more switches are connected in a manner that creates a “loop”, or an infinite cycle.

Question 14

What is the result of a bridged loop?

Answer 14

The entire domain goes down.

Question 15

What could cause network speed degradation when bridging two or more switches?

Answer 15

Speed mismatch

Question 16

Most modern switches have a feature that will auto detect connected hardware. What does this auto-detecting feature eliminate the need for when compared to setting up legacy switches?

Answer 16

Eliminates the need for crossover and uplink cable requirements.

Question 17

What is an Uplink Port?

Answer 17

A pre-crossover port

Question 18

What is an Auto-Sensing Port?

Answer 18

A self-configuring port that detects what type of wiring scheme is being used and what it is connecting to.

Question 19

Bidirectional (a.k.a., ___) = ???

Answer 19

A.k.a., Bidi; different laser colors can be used for sending and receiving data.

Question 20

STP stands for what? What is its purpose?

Answer 20

Spanning Tree Protocol; developed to avoid Bridging Loops by turning off ports.

Question 21

Define Flood Guard.

Answer 21

A function in a Switch that prevents flooding by turning off ports.

Question 22

What is Speed Mismatch and what is the result when present in two different switches?

Answer 22

When two Switches use different port speeds; this ultimately indicates that the hardware is incompatible and can be detected by link lights not turning on/off and the two ports being used show entirely different link speeds.

Question 23

What is the Multisource Agreement (MSA)?

Answer 23

The collective agreement of a uniformed connector for Switches when using fiber cabling.

Question 24

What type of hardware would I plug a Gbic, SFP/SFP+, or QSFP connector into?

Answer 24

Switch