What other TCP settings can you modify besides MTU to shorten packets?

This question aims to evaluate your technical knowledge and understanding of networking protocols, specifically related to TCP configurations. Interviewers are looking for candidates who not only know how to adjust MTU settings but also understand the broader implications of TCP performance, including other settings like TCP window size and buffer sizes. Additionally, they want to assess your problem-solving abilities and how you approach technical challenges in networking.

You can respond by discussing various TCP settings such as the TCP window size, which can help improve the flow of data and reduce latency by allowing more packets to be sent before waiting for an acknowledgment. Additionally, you might mention modifying the TCP_NODELAY option to disable Nagle’s algorithm, which can improve performance in real-time applications. Example: 'Besides adjusting the MTU, I often modify the TCP window size to optimize throughput. This allows for more data to be sent before needing acknowledgment, and additionally, I change the TCP_NODELAY option to minimize latency for applications that require fast responses.'