Lesson 3A

Question 1

What is the purpose of a repeater in a network?

Answer 1

A repeater boosts signals in cables so they can travel longer distances without losing strength

Question 2

At which OSI model layer does a repeater work?

Answer 2

A repeater works at the Physical layer (Layer 1) of the OSI model.

Question 3

What types of cables can repeaters be used with?

Answer 3

Repeaters can be used with both copper cables and fiber optic cables.

Question 4

What is the purpose of a media converter?

Answer 4

A media converter changes signals from one type of cable to another type.

Question 5

What are some common types of media conversions?

Answer 5

Single Mode Fiber to Twisted Pair
Multimode Fiber to Twisted Pair
Single Mode to Multimode Fiber

Question 6

At which OSI model layer does a media converter work?

Answer 6

A media converter works at the Physical layer (Layer 1) of the OSI model.

Question 7

What is a hub in a network?

Answer 7

A hub connects multiple computers in an Ethernet network and sends data from one device to all other devices.

Question 8

At which OSI model layer does a hub work?

Answer 8

A hub works at the Physical layer (Layer 1) of the OSI model.

Question 9

What is a collision domain?

Answer 9

A collision domain is a network segment where only one device can send data at a time, to avoid data collisions.

Question 10

What are MDI and MDI-X?

Answer 10

MDI (Medium Dependent Interface) is the port on a computer or end device. MDI-X (Medium Dependent Interface Crossover) is the port on a hub.

Question 11

What is a bridge in a network?

Answer 11

A bridge connects different physical network segments and reduces collisions by creating separate collision domains.

Question 12

At which OSI model layer does a bridge work?

Answer 12

A bridge works at the Data Link layer (Layer 2) of the OSI model.

Question 13

What does a bridge use to forward traffic to the correct segment?

Answer 13

A bridge uses a MAC address table to track which addresses are associated with which ports.

Question 14

What happens if a bridge doesn’t know where to send a frame or if the frame is a broadcast or multicast?

Answer 14

The bridge floods the frame to all segments except for the one it came from.

Question 15

What is a Layer 2 switch?

Answer 15

A Layer 2 switch is like a bridge but can connect many more devices and creates a separate collision domain for each port.

Question 16

What is microsegmentation?

Answer 16

Microsegmentation is when each switch port is a separate collision domain, creating a direct link between any two network nodes.

Question 17

At which OSI model layer does a Layer 2 switch work?

Answer 17

A Layer 2 switch works at the Data Link layer (Layer 2) of the OSI model.

Question 18

What is a broadcast domain?

Answer 18

A broadcast domain is a network segment where broadcast messages are sent to all devices.

Question 19

How does a switch improve network efficiency compared to a hub?

Answer 19

A switch reduces collisions by creating separate collision domains for each port, allowing multiple devices to send data at the same time.