A service that uses existing phone lines to provide high-speed connections is called _______.
A: WWAN
B: 3G/4G
C: Voiceband
D: DSL
A: WWAN
B: 3G/4G
C: Voiceband
D: DSL
举一反三
- _______ uses standard telephone lines to provide high-speed connections. A: Cellular B: Satellite C: Cable D: DSL
- The less expensive option of constructing special tracks for high-speed train is utilizing __________ . A: dedicated lines B: existing lines C: specail lines D: continuous welded rails
- Words and phrases that provide connections and link ideas together are called ___.
- 3G、4G中的字母G代表什么? .
- in japan the is the first network of high speed railway lines in the world