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IFSM 310 HomeWork 5 Recent

IFSM 310 HomeWork  5 Recent
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IFSM 310 HomeWork  5 NEW

IFSM 310 Homework 5
Module 5, Englander Chapter 14
1. (2 points) In the U.S., the Federal Communications Commission approved the commercial use of ultra wideband technology on February 14, 2002. Describe the features of UWB, including range, power requirements, data transfer rate, its typical applications, and at least one characteristic that differentiates it from ZigBee or Bluetooth. (NOTE: You'll have to use the Web is answer this question.)
2. (3 points) Describe how noise differs from distortion. Explain how can noise and distortion be introduced into a transmission medium. Define signal-to-noise ratio and explain how it is used to gauge the reliability of data transmission.
3. (2 points) Describe the differences between CSMA/CD and CSMA/CA. Explain the reasons why CSMA/CA is used instead of CSMA/CD for wireless networks.
4. (3 points) The current IP address standard is 32 bits. IPv6 will increase the address length to 128 bits. An IP socket address is a combination of an IP address and IP port number, usually written with the IP address first followed by a colon and the port number (for example, 129.24.8.1:42). An IP socket allows multiple hardware devices or software services to "listen" to different message streams sent to the same IP address. (HINT: See Module 5 section 4)
a. What is the URL name and dotted quad IP address of an Internet URL that you use? (It could be your ISP)
b. What is the Network Class of the address?
c. How did you determine the dotted quad address (i.e., what utility did you use to determine the address not how you converted it to binary)?
Module 6, Englander Chapters 15 & 16
1. (2 points) Describe the two methods that are used to provide concurrent operations of multiple processes on a single CPU. What are the advantages of each method? If you were designing a I/O device to interface with a keyboard, which approach would you use and why?
2. (2 points) One approach to operating system design is to provide as small a kernel as possible and to make all other modules optional. What are the minimum services that must be provided in such a miniature kernel?
3. (2 points) Compare compilers and interpreters with respect to memory requirements for program execution and CPU requirements for program execution.
4. (2 points) The use of a CLI (command line interface) provides flexibility and power for the user who knows how to use the CLI effectively. But, effective usage of a CLI requires learning and deeper understanding of the system than that possessed by the typical user. The average user will be more comfortable with the ease of use and consistency of a GUI (graphical user interface). Once learned, the GUI can be navigated and manipulated rapidly. However, there are several capabilities that are easy to achieve with a GUI, but much more difficult with a CLI. Describe at least two of these capabilities.
5. (2 points) Nearly every operating system separates the file system from the I/O services. Clearly describe at least two advantages in doing so.

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