Twisted Pair and Stripe Green Stripe

Exercise 4.1.1
The NIC works at the physical and Data Link Layer only and does not use TCP or IP those are programs that are on your computer.
Exercise 4.1.2
Because one is trying to transmit information and the other is transmitting power. Two completely different things.
Exercise 4.1.3
Applicators can steel reinforced concrete in a building, elevators, high capacity radio transmitters, and more expensive cables lessen the changes of interference.
Exercise 4.1.4
Table 4-1 UTP Standards
Category Maximum Speed Application
1
Telephone cabling (POTS)
2 4 Mbps Token Ring
3 16 Mbps 10 Base T Ethernet
4 20 Mbps Token Ring
5 100 Mbps 100 Base T Ethernet
5e 1 Gbps Gigabit Ethernet
6 1 Gbps Gigabit Ethernet and faster broadband applications
6a 10 Gbps Future standard that will provide 10 Gbps Ethernet

Exercise 4.1.5
Standard Crossover
Pin Color Color
--- ------------- ------------- 1 Orange Stripe Green Stripe 2 Orange Green 3 Green Stripe Orange Stripe 4 Blue Blue 5 Blue Stripe Blue Stripe 6 Green Orange 7 Brown Stripe Brown Stripe 8 Brown Brown

Exercise 4.1.6
Coaxial cable conducts electrical signal using an inner conductor (usually a solid copper, stranded copper or copper plated steel wire) surrounded by an insulating layer and all enclosed by a shield, typically one to four layers of woven metallic braid and metallic tape. The cable is protected by an outer insulating jacket. Normally, the shield is kept at ground potential and a voltage is applied to the center conductor to carry electrical signals.
Exercise 4.1.7
The distance limit is 100m for UTP cabling. It is very important that you know exactly how to wire UTP cables. Cabling is the base of a solid network, and doing it correctly the first time will help you avoid hours of frustration and troubleshooting. On the other hand, if you are dealing with a poorly cabled network, this knowledge will help you to find the problem and fix it more efficiently.
Exercise 4.1.8
Cross over cable is used to connect two similar devices e.g. 2 computers. The straight cable is used to connect two dissimilar devices e.g. computer and switch.
Exercise 4.1.9
S1 and S2 will require a crossover cable.
Exercise 4.1.10