What are some of the limitations of IPv4? What will be an ...

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What are some of the limitations of IPv4?
 
  What will be an ideal response?

Question 2

Two factors have made DSL competitive: its relatively low cost and high transmission speeds.
 
  Indicate whether the statement is true or false

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Answer to Question 1

The Internet was initially designed primarily as a tool for researchers, scientists, and engineers to more easily exchange data and information with each other. At that time the types of data that IPv4 was created to carry were fairly simple: textual and numerical. Today, we require the IPv4 infrastructure to transmit much more complex types of data, including video, audio, graphics, and voice. IPv4 can do this, but not as efficiently as is desired or required in today's world of instant mass communications. The very popularity of IPv4 has also resulted in the rapid deletion of an essential element needed of any entity that wants an Internet presence, namely an IP address. IPv4 uses a two-level, and hierarchical, addressing scheme. Part of an IPv4's address is used as host, and part as network, as we discovered in an earlier chapter. IPv4 address classes are A, B, C, D, and E. This type of addressing scheme is not efficient for the numbers and types of networks now in place. IPv4 can be used to carry multimedia types of data, such as video and audio, but not very well. Multimedia types of data were never provided for in the IPv4 architecture because, at that time, such needs did not exist. Also, very importantly, IPv4 does not inherently provide for encryption and authentication, two technologies critical to securing the enterprise. The wireless revolution has been a resounding success. What is stalling this multi-billion dollar wireless revolution in its tracks, however, is the lack of IPv4 addressing. Wireless devices and the wireless LANs they run on must have IP addressing availability in order to fulfill their promise. Without an IP address, there is no connectivity. Workarounds using techniques such as Network Address Translation (NAT), subnetting and supernetting have helped extend IP addresses, but such techniques can only take IPv4 so far, and many countries outside of the United States and Europe were not part of the initial IP address giveaway. For these countries, the lack of IP addressing would mean literally having no Internet presence.

Answer to Question 2

TRUE