Lesson 3C Flashcards
What is an Ethernet switch used for?
An Ethernet switch is a device that connects different computers and devices in a network so they can talk to each other. It helps direct messages to the right device by looking at the address attached to each message.
What are the two main types of Ethernet switches?
Unmanaged Switches: Simple and don’t need any setup. Just plug them in and they work.
Managed Switches: More advanced and can be set up with special settings to control how data moves through the network.
What is port mirroring?
Port mirroring copies all the data coming in and out of one port (connection point) on the switch and sends it to another port. This helps with monitoring and checking the network for problems.
What happens if a switch doesn’t find an address in its MAC address table?
The switch sends the data to all other ports on the switch to make sure it reaches the right device, even though it doesn’t know which port the device is connected to.
What is a stackable switch?
A stackable switch can be connected with other switches to work together as a single unit, so you can manage them all at once instead of separately.
What’s the difference between fixed and modular switches?
Fixed Switches: Have a set number of ports (connection points) that can’t be changed.
Modular Switches: Have slots where you can add different types of port cards, allowing you to change or add more ports.
What does the “show config” command do on a switch?
It shows you the current settings and setup of the switch. This helps check if the switch is set up correctly or if there are any changes.
What is a desktop switch?
A small switch designed to sit on a desk or table. It’s used in smaller setups where there aren’t many devices to connect.
What is auto-MDI/MDI-X?
It’s a feature that allows a switch port to automatically adjust so it can connect with different types of devices, even if you use the wrong type of cable.
What is a MAC address table?
A list inside the switch that keeps track of the addresses of devices connected to each port. This helps the switch send data to the right device.
What does the show interface command do?
It shows the status and details of all the switch’s ports, like whether they are working and how much data is being sent through them.
What are jumbo frames?
Special large data packets that can carry more data (up to 9,000 bytes) than regular packets. This means fewer packets need to be sent, which can make the network faster.
What is a managed switch?
A switch that you can configure with settings to control how it works, allowing more control over the network and how data is handled.
What is flow control in networking?
It’s a way to temporarily stop sending data to a device if it’s getting overwhelmed, preventing data loss and making sure the device can handle the data.
What does the show mac address-table command do?
It lists all the MAC addresses of devices connected to the switch and shows which ports they are connected to.
