Network Switch Functions and Protocols

The video tutorial explains the role of switches in forwarding traffic based on MAC addresses, the importance of MAC address tables, and how switches use these tables to direct traffic. It covers the Address Resolution Protocol (ARP) for IPv4 networks and the Neighbor Discovery Protocol (NDP) for IPv6 networks. Additionally, it discusses Power over Ethernet (PoE) standards, which allow devices to receive power through Ethernet cables, eliminating the need for separate power connections.

What is the primary function of a switch in a network?

• To forward traffic based on MAC addresses

• To provide wireless connectivity

• To assign IP addresses to devices

• To convert analog signals to digital

How does a switch prevent network loops?

• By using the Spanning Tree Protocol

• By using dynamic routing protocols

• By assigning static IP addresses

• By disabling unused ports

What happens if a switch does not have a destination MAC address in its table?

• It requests the MAC address from a DHCP server

• It drops the packet

• It sends the packet to a default gateway

• It floods the packet to all interfaces

What protocol is used in IPv4 networks to find the MAC address of a device?

• ARP

• ICMP

• NDP

• DHCP

Which command can be used to view the ARP table on a local machine?

• ipconfig

• netstat

• ping

• arp -a

What protocol does IPv6 use to discover MAC addresses?

• ARP

• NDP

• DHCPv6

• ICMPv4

What is the purpose of Neighbor Discovery Protocol in IPv6?

• To route packets

• To discover MAC addresses

• To encrypt data

• To assign IP addresses

What does Power over Ethernet (PoE) allow you to do?

• Transmit data wirelessly

• Provide power to devices over Ethernet cables

• Increase network speed

• Reduce network latency

Which PoE standard provides 25.5 watts of power?

• IEEE 802.3bt

• IEEE 802.3az

• IEEE 802.3af

• IEEE 802.3at

What is the difference between endspan and midspan in PoE?

• Endspan is faster than midspan

• Endspan is from a switch, midspan is from an injector

• Endspan provides data, midspan provides power

• Endspan is wireless, midspan is wired