双绞线分为屏蔽双绞线（Shielded Twisted Pair，STP）和非屏蔽双绞线（Unshielded Twisted Pair，UTP）两类。

在西门子工业以太网络中，通常使用的物理传输介质时屏蔽双绞线（TP，Twisted pair）、工业屏蔽双绞线（ITP，Industrial Twisted pair）以及光纤。

Which physical connection is the fastest? A: Twisted pair B: Coaxial cable C: Fiber-optic cable D: Microwave

______________ are a type of cable that is used by cable TV. A: Fiber cables B: Twisted pair cables C: Coaxial cables

双绞线（ Twisted pair，T P）由两根( )号绝缘铜导线相互缠绕而成

A RJ35 connector is a modular 8 position, 8 pin connector used for terminating Cat5e or Cat6 twisted pair cable.

Which of the following connector types is used with twisted pair cable?（） A:  T-Connector B:  BNC C:  RJ-45 D:  LC

The transmission media used by 10BASE-T Ethernet is ( ) A: Twisted pair B: Fiber C: Coaxial cable D: Radio waves

The transmission media used by 10BASE-F Ethernet is ( ) A: Fiber B: Twisted pair C: Coaxial cable D: Radio waves

Among the following transmission media, the lowest bit error rate is ( ) . A: Optical fiber B: Coaxial cable C: Twisted pair D: Microwave