Chapter 10 - Ethernet Devices

Question 1

Hub

Answer 1

A hub is a device used to connect multiple computers together to form a network.

It can be considered a multiport repeater, meaning that every frame that is present on the network is transmitted to all computers on the network.

Question 2

Bridge

Answer 2

A bridge is a device used to connect two or more separate networks, creating a larger aggregate network.

Question 3

Repeater

Answer 3

A repeater is a device that is used to receive and retransmit the signal of a network connection, usually in a situation where a very long cable run is necessary to reach one or more distant computers on a network.

Question 4

Switch

Answer 4

A switch is a network device used to connect multiple computers to form a network.

While their physical appearance is the same a switch differs from a hub by sending packets only to a destination computer on a network.

It is able to do this by listening to network traffic and learning which systems are present on each physical connection.

After learning which
MAC (or IP) address(es) are present on each port, a switch can send packets to only
the ports where destination computers are present.

Question 5

Router

Answer 5

a router is a device that connects multiple networks.

Each interface on a router is connected to a different network, usually to a hub or switch that is connected to other computers. Routers exchange information with neighbouring routers in order to know where to route packets.

Question 6

Gateway

Answer 6

A gateway is a device or system that connects two different networks, enabling data to flow from one to the other.

Strictly speaking, a router is a type of gateway, but other
types exist, including frame relay switches, ATM to IP switches, and so on.