What is the term for the method of combining multiple Ethernet links to increase bandwidth and provide redundancy?

What is the term for the method of combining multiple Ethernet links to increase bandwidth and provide redundancy?

• A. Quality of Service
• B. Power over Ethernet
• C. Spanning Tree Protocol
• D. LACP (Link Aggregation Control Protocol)

Answer: (D)

Link aggregation is the technique of bundling several physical Ethernet links into one logical link to boost overall bandwidth and provide redundancy in case a link fails. The protocol that negotiates and manages this process between devices is LACP (Link Aggregation Control Protocol). It creates a single port-channel, allows traffic to be distributed across the member links, and quickly detects failures to reroute traffic, giving both higher throughput and fault tolerance. Other options don’t fit because Quality of Service prioritizes traffic, not link bonding; Power over Ethernet adds power to devices and doesn’t affect bandwidth; Spanning Tree Protocol prevents loops and can provide some redundancy, but it doesn’t increase usable bandwidth by aggregating links.

Link aggregation is the technique of bundling several physical Ethernet links into one logical link to boost overall bandwidth and provide redundancy in case a link fails. The protocol that negotiates and manages this process between devices is LACP (Link Aggregation Control Protocol). It creates a single port-channel, allows traffic to be distributed across the member links, and quickly detects failures to reroute traffic, giving both higher throughput and fault tolerance. Other options don’t fit because Quality of Service prioritizes traffic, not link bonding; Power over Ethernet adds power to devices and doesn’t affect bandwidth; Spanning Tree Protocol prevents loops and can provide some redundancy, but it doesn’t increase usable bandwidth by aggregating links.