Layer 2 Switch Concepts and Functions

This video tutorial explains Layer 2 switching, focusing on how switches learn and store MAC addresses to make intelligent forwarding decisions. It covers the process of learning MAC addresses, the creation of a MAC address table, and how switches use this information to forward data efficiently. The video also discusses handling broadcasts and unknown unicast frames, emphasizing the importance of Layer 2 switches in modern wired networks.

What is the primary function of a Layer 2 switch?

• To encrypt data for security

• To provide wireless connectivity

• To learn and forward data based on MAC addresses

• To route data between different networks

What type of connector is typically used on a network switch port?

• RJ11

• RJ45

• USB

• HDMI

How does a Layer 2 switch learn the MAC address of a device?

• By using a pre-configured list

• By examining the source MAC address in incoming frames

• By checking the IP address

• By receiving a broadcast message

What is stored in a MAC address table?

• Network protocols and their corresponding ports

• IP addresses and their corresponding ports

• MAC addresses and their corresponding ports

• Device names and their corresponding IP addresses

Why does a Layer 2 switch use a MAC address table?

• To manage wireless connections

• To store IP addresses

• To make intelligent forwarding decisions

• To encrypt data

What happens when a switch receives a broadcast frame?

• It forwards the frame to all ports

• It sends the frame back to the sender

• It discards the frame

• It forwards the frame to a specific port

What is an unknown unicast frame?

• A frame that is broadcast to all devices

• A frame that is multicast to a group of devices

• A frame intended for a MAC address not yet learned by the switch

• A frame with no destination MAC address

What is the purpose of flooding in a network switch?

• To ensure all devices receive a broadcast

• To forward frames to all ports when the destination is unknown

• To increase network speed

• To prevent data loss

Which layer of the OSI model does a Layer 2 switch operate on?

• Network layer

• Data link layer

• Transport layer

• Application layer

What is a common term for data at Layer 2 of the OSI model?

• Frame

• Packet

• Bit

• Segment