Provide answers to each of the following questions:
Identify the functions of a CSU/DSU. How are they used in a corporate environment? Integrated services digital networks (ISDN) are sometimes used in locations that do not support DSL or cable modem connections. Your choices may be analog modems or an ISDN connection in those remote locations. Describe three benefits ISDNs have over regular dial-up modem connections. Compare and contrast packet and circuit switching. Which is more commonly used? What are the advantages and disadvantages of each? Describe the three main types of firewalls. Explain how each type protects the network. Determine which firewall is the most efficient and why.
Your answers should be 3-4 pages long in total (400 words per page).