Computer Systems

Question Description

13.9 What is the purpose of an IP address mask? Suppose an IP address is identified as222.44.66.88/24. What is the network address in this case? What is the host address? How manyhosts can this network address support? Repeat this exercise for the IP address 200.40.60.80/26.

13.10 Explain the concept of a DHCP lease. How is it obtained? How is it used? What does it provide?

14.5 In recent years, much of the storage and communication of data has been in digital form, even ifthe source data is actually analog. Even most television is now transmitted digitally. What benefitsand advantages are gained by using digital storage and signaling

15.8 What is the difference between the logical description of a file and the physical description?16.6 Explain piping. What additional capability does piping add to a command language?

16.7 Explain the concept of redirection. Illustrate your answer with an example of a situation whereredirection would be useful.

17.1 You have noticed that loading the programs from your hard disk seems to take longer than it usedto. A friend suggests copying the files from your disk, one at a time, to a different device, andback to your disk. You do so and discover that the programs load much faster now. Whathappened?

17.7 Explain the trade-offs between contiguous, noncontiguous linked, and noncontiguous indexed fileallocation. In particular, note the effect on sequential and random access methods.

18.17 Explain why the installation of additional physical memory in a virtual memory system oftenresults in substantial improvement in overall system performance.

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