Quant Interview Practice Questions

In a high-frequency trading environment, minimizing latency is paramount. Consider a scenario where your system receives market data packets via Ethernet. The traditional network I/O model involves the kernel copying data from the network interface card (NIC) buffer to a kernel buffer and then to the user-space application buffer. Zero-copy networking aims to eliminate one of these copies. Assuming the entire packet processing time is dominated by the memory copy operations, and a single memory