17 what is a major advantage of circuit - switched networks over packet - switched networks 題目的意思是說(shuō)從線路交換轉(zhuǎn)變?yōu)榘粨Q網(wǎng)絡(luò)的好處是什么?
Delays ( latency ) and variability of delay ( jitter ) are greater in packet - switched than in circuit - switched networks 更棒的是分封交換的延遲(等待時(shí)間)和延遲的變化(劇跳)是超越電路交換網(wǎng)路的。
Packet - switched networks were developed to overcome the expense of public circuit - switched networks and to provide a more cost - effective wan technology 分封交換網(wǎng)路被發(fā)展用來(lái)克服昂貴的公眾電路交換網(wǎng)路并提供一種較有成本效益的廣域網(wǎng)路技術(shù)。