Explain the characteristics of any two guided and any two unguided channels for data transmission

Guided and unguided transmission channels are the two major types of communication media used in data transmission. Guided media use physical pathways such as cables and wires, while unguided media transmit data through the air or vacuum using electromagnetic waves. Understanding the characteristics of each helps in selecting the appropriate medium for different computing and networking environments. The following discussion focuses on two guided and two unguided transmission channels.

Twisted Pair Cable (Guided Medium):
Twisted pair cables are among the most commonly used transmission media in local area networks (LANs) and telephone systems. They consist of pairs of insulated copper wires twisted together to reduce electromagnetic interference (EMI). There are two main types: Unshielded __________ ________ ____ _________ ________.
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