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Ethernet Forwarding and Self-learning

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Questions and Answers

What is the main function of a switch's forwarding table?

To broadcast frames with unknown destination MAC on all interfaces

To operate transparently to the hosts

To learn new MAC-interface mappings through incoming frames (correct)

To assign MAC addresses to incoming frames

What problem does Ethernet encounter when flooding meets loops?

Broadcast storm in the network (correct)

Traffic isolation issues

Redundancy without loops

Hard user management

How does a receiving switch determine which VLAN a frame belongs to?

By analyzing the destination IP address

By examining the frame's payload

By reading the VLAN tag or IEEE 802.1Q information (correct)

By checking the source MAC address

What is the purpose of framing in the link layer?

To encapsulate a packet into a frame, adding a header and trailer Signup and view all the answers

What is the function of the MAC address in the link layer?

To uniquely identify the network adapter Signup and view all the answers

Which service in the link layer involves representing the 0s and 1s for encoding?

Encoding Signup and view all the answers

What is the purpose of a parity bit in two-dimensional parity?

To detect errors in each row and column of data Signup and view all the answers

How does Ethernet handle collisions?

By aborting the transmission and waiting for a random back-off time Signup and view all the answers

What is the maximum length of the wire in Switched Ethernet?

2500 meters Signup and view all the answers

What is the function of a link layer switch in an Ethernet network?

To create and forward frames between different Ethernet segments Signup and view all the answers