Case Project 4-2 XYZ Corp.'s facilities in Nashua, New Hampshire, are two office buildings 400 feet apart, each with its own LAN. To connect the two networks, you plan to dig a trench and lay cable in conduit between the two buildings. You want to use fiber-optic cable, but your budget-conscious facilities manager wants to use 100 Mbps Ethernet over twisted-pair cable. Which of the follow- ing reasons can you use to justify fiber-optic cable in this case, and why? CASE PROJECTS a: Twisted pair won't span a 400-foot distance b: Fiber-optic cable is cheaper and easier to work with than twisted pair c: Twisted pair is a conductive cable and can, therefore, carry current based on the difference in ground potential between the two buildings. d: Fiber-optic cable leaves more room for growth and future needs for increased bandwidth than twisted pair does Case Project 4-3 TVBCA has just occupied a historic building in downtown Pittsburgh where 15 employees will work. Because of codes for historic buildings, TVBCA isn't permitted to run cables inside walls or ceilings. CASE PROJECTS Required result: Employees must be able to share files and printers, as in a typ- ical LAN environment, without using cables Optional desired results: Employees must be able to use their laptops or tablets and move freely throughout the office while maintaining a network connection. Because of the size of some computer-aided design (CAD) files employees use often, data transfer speeds should be at least 100 Mbps and the connection should be secure. Proposed solution: Install an 802.11ac wireless access point and configure each mobile device to connect to the AP with WPA2 encryption. Which of the following results does the proposed solution deliver? Explain your answer a: The proposed solution delivers the required result and both optional desired results. b: The proposed solution delivers the required result and only one of the two optional desired results. c: The proposed solution delivers the required result but neither optional desired result. d: The proposed solution does not deliver the required result