2022初级通信工程师试题答案公布(07.02)

1. [单选题]地面上用微波接力通信系统进行的通信，因系视距传播，平均每（ ）km假设参考电路要经过每跨距约为46km的54次接力转接。

A. 1500
B. 2500
C. 3500
D. 4500

2. [单选题]A Next Generation Network(NGN) is a () network ,which is able to provide Telecomunication Services ti users and to make use of multiple broadband, QoS-enable transport technologies and in which service-related functions are (下题选择) of the underlying transport-related technologies.

A. ISDN
B. ATM
C. circuit-based
D. packet-based

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