NT1210 Lab 4.1 Copper Cabling
Exercise 4.1.1
Why are standards so important for NICs, connectors, and media? Use your textbook and Internet research to justify your answer.
Simple because Stability, Consistency, Minimization of packet errors.
Exercise 4.1.2
The voltage for registering a bit of 1 on Ethernet can be as low as 2.5 volts or even 1 volt. Why is this so low when the capacity for transmitting electricity on the copper wire is so high? Use your textbook and Internet research to support your answer.
Because the voltage (or current) used to transmit data needs only be high enough for the receiver to detect it. Making the voltage (much) higher would make the receiver electronics more difficult.
Exercise 4.1.3
What are some applications of shielded copper cable? Why is the more expensive shielded cable used in these situations? Use your textbook or Internet research to support your answer.
The extra covering in shielded twisted pair wiring protects the transmission line from electromagnetic interference leaking into or out of the cable. STP cabling often is used in Ethernet networks, especially fast data rate Ethernets.
Exercise 4.1.4
Complete the entries in Table 4-1. Use your textbook and Internet research to compose your answer.
The common connector for interfacing UTP wires to a computer for networking is the Registered Jack 45 (RJ-45) interface. This uses eight copper wires (four twisted pairs) to complete the connec- tion between interfaces. The pinout for these wires defines the order in which the individual wires connect to the network interface card and how the wires transition from one end of the cable to the other. A straight cable is used to connect a device to a network hub or switch. This type of cable does not change the wiring order from one end to the other. You can see an example of this in Figure 4-1.

Exercise 4.1.4
Complete