Which three hardware-based offloads provide maximum performance for physical network interface cards? (Choose three.)
Click on the arrows to vote for the correct answer
A. B. C. D. E. F.CDF.
Sure, I can explain each of the three hardware-based offloads that provide maximum performance for physical network interface cards.
TCP Segmentation Offload (TSO): This offload allows the network interface card (NIC) to offload the task of dividing large data packets into smaller ones to the hardware. This helps to reduce the workload on the host CPU and improve network performance. With TSO, the host sends a large packet to the NIC with instructions to divide the packet into smaller packets of a specific size. This helps to reduce the number of packets sent over the network, reducing the overhead and improving the overall performance.
Receive Side Scaling (RSS): This offload allows the NIC to distribute incoming network traffic across multiple CPU cores, improving network performance by reducing the workload on a single core. With RSS, the NIC is able to identify the network flow (based on source and destination IP addresses and ports) and distribute the traffic across multiple CPU cores. This improves the overall performance of the system by allowing multiple cores to handle network traffic in parallel.
Large Receive Offload (LRO): This offload allows the NIC to combine multiple small packets into a larger packet before sending them to the host. This helps to reduce the number of packets that the host needs to process, reducing the overhead and improving the overall performance. With LRO, the NIC is able to identify packets that belong to the same flow and combine them into a larger packet, reducing the number of packets that need to be processed by the host.
Netfilter Flow Offload (NFO), Priority Flow Control (PFC), and Source Route Bridging (SRB) are not hardware-based offloads for physical network interface cards and do not provide maximum performance. NFO offloads packet filtering and firewall rules to the NIC, but it is not a hardware-based offload. PFC is a feature of Ethernet that allows for the creation of classes of service and is not a hardware-based offload. SRB is an obsolete bridging protocol and is not a hardware-based offload for physical network interface cards.