Which Citrix ADC feature enables reusing existing TCP connections across requests?

Answer: B — Connection multiplexing

The idea being tested is how a front-end device can minimize TCP setup churn by sharing a limited set of open connections among multiple requests. In Citrix ADC, connection multiplexing lets the ADC reuse existing TCP connections to backend servers by multiplexing several HTTP requests over those same connections. This means fewer new TCP handshakes, reduced overhead, and better throughput, especially under high request rates. In other words, multiple requests can be served over the same or a small pool of persistent connections rather than opening a fresh connection for each one. Keep-alive does keep a single connection open for later requests, but it doesn’t inherently bundle multiple requests onto one connection. TCP buffering is about storing data to smooth out transmission, not about reusing connections across requests, and content switching is about routing decisions based on content, not about connection reuse.