please answer all 4 questions

Digital Transmission.  Please respond to the following:

• Compare and contrast the data communication technologies of guided media and unguided media. This should include transmission media, data link control protocols, and multiplexing.
• Compare digital transmission to analog transmission to determine the advantages of digital transmission. Provide at least one example to support your response.

T-1 Lines.  Please respond to the following:

•  analyze the multiplexing techniques of DSL and cable modem Internet and suggest the one you prefer. Explain your decision.
• Compare and contrast the use of leased lines in a WAN or LAN setting. Then recommend what you would use if you were a CIO. Support your response with evidence or examples.

"In Memory Databases (IMDB)"  Please respond to the following:

• in-memory databases (IMDB) are making significant inroads into database management. Imagine that you are a consultant to a large transaction-oriented Web-based company. Establish the key benefits of the IMDB to the company’s CEO. Suggest the type of infrastructure changes that would be required.
• Discuss iterative design as it relates to databases overall. Determine whether one must design a database iteratively or design the entire database all at once. Provide a rationale for your answer.

"Trends in Software Development"  Please respond to the following:

• analyze the important principles and practices that are driving the current trends in software development that you researched.
• knowledge gained from Chapter 14 of the text, predict key trends that you believe will be popular in the future. Provide a rationale for your response.

please review chapter 14 documentation in the attachment