题目内容：

英译汉 计算机
Context switching:N-Ports may need to service
hundreds or even thousands of exchange-level connections.
Because of limited on-chip memory,the
protocol context will have to be stored in memory
extemal to the FC-2 logic,and be brought in each
time a frame arrives (context switching).The
context switching interval and time for its completion
are critical for sequence-level throughput.