C40_questions

Each question should be answered in at least 2 paragraphs.

1. Why are standards needed in data communication and networking? What are the advantages and disadvantages of standards? How do standards fit in with regulations at the federal, manufacturing, and organizational levels? Give an example of a standard that fits in at your workplace.

2. What is a major disadvantage of asynchronous transmission? How is synchronization provided for synchronous transmission? Give examples of asynchronous and synchronous transmission applications. What is a parity bit?

3. According to Garg (2007) more than three-fourths of Internet users are also mobile subscribers. This is a huge number considering that mobile technology was introduced in 1980. Mobile telephone systems can be classified into generations. The first generation was analog and used frequency modulation. With the popularity of first-generation telephony, a second generation was introduced with digital technology, using time division multiplexing (TDMA) or code division multiplexing (CDMA).

What are the three classes of wireless data networking? List the main features of 3G systems and how these compare to 4G systems. Define IP Wireless technology.

4. What are the key high-speed networking services available for wide-area networking? Which one would you recommend for a college campus? What are the uses for value added network (VAN) and very private network (VPN)? How do VAN and VPN work?