99色精品-9色在线-99色在线-99色视频 国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精

單項(xiàng)選擇題

Prioritizing traffic between data and voice is defined as which of the following?()

A. Caching engines
B. Proxy server
C. QoS
D. Load balancing

微信掃碼免費(fèi)搜題