Problem. The If-Modified-Since header can be used to check whether a cached page is still valid. Requests can be made for pages containing images, sound, video, and so on, as well as HTML. Do you think the effectiveness of this technique is better or worse for JPEG images as compared to HTML?
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- The If-Modified-Since header can be used to check whether a cached page is still valid. Requests can be made for pages containing images, sound, video, and so on, as well as HTML. Do you think the effectiveness of this technique is better or worse for JPEG images as compared to HTML? Think carefully about what "effectiveness" means and explain your answer.This header may be used to determine if a cached page has been modified since it was last accessed. Requests may be made for pages that include pictures, sound, video, and other types of media, in addition to HTML. Do you believe that the efficacy of this approach is greater or worse when used to JPEG pictures as opposed to HTML code? Consider the definition of "efficacy" carefully, and then provide an explanation for your choice.According to a student, all of the fundamental page replacement algorithms (FIFO, LRU, and optimum) are similar save for the attribute used to select the page to be replaced.What is the FIFO algorithm's aforementioned attribute? What is the LRU method? There's a pptimal algorithm?This page replacement technique has a generic algorithm.
- QUESTION 2: What is the difference between a Page and a Frame? QUESTION 3: Explain the differences between Resident Set Management and Page Replacement Policy.According to a student, all of the fundamental page replacement algorithms (FIFO, LRU, and optimum) are similar save for the attribute used to select the page to be replaced. What is the FIFO algorithm's aforementioned attribute? What is the LRU method? There's a pptimal algorithm? This page replacement technique has a generic algorithm.With the LRU page replacement policy and enough space for storing 3-page frames, the memory page reference string 'A B C BADABCDABACBD', What are the identities of pages in the frames when the reference string has completed? Lütfen birini seçin: O a. 8 page faults O b. 5 page faults O c. 6 page faults O d. 7 page faults O e. 10 page faults O f. 9 page faults
- Consider the bitmap representation of the free-space map, where for eachblock in the file, two bits are maintained in the bitmap. If the block is between0 and 30 percent full the bits are 00, between 30 and 60 percent the bits are01, between 60 and 90 percent the bits are 10, and above 90 percent the bitsare 11. Such bitmaps can be kept in memory even for quite large files. Outline the benefit of the bitmap technique over free lists in searching for free space and in updating free space information.Consider the bitmap representation of the free-space map, where for eachblock in the file, two bits are maintained in the bitmap. If the block is between0 and 30 percent full the bits are 00, between 30 and 60 percent the bits are01, between 60 and 90 percent the bits are 10, and above 90 percent the bitsare 11. Such bitmaps can be kept in memory even for quite large files.a. Outline two benefits and one drawback to using two bits for a block,instead of one byte as described earlier in this chapter.b. Describe how to keep the bitmap up to date on record insertions anddeletions.c. Outline the benefit of the bitmap technique over free lists in searchingfor free space and in updating free space information.Using example HTTP headers show the typical HTTP exchange between a Web Client (Browser, CURL, etc.) and a Web Server, where the client issues (i) a GET and (ii) a POST request via a HTML form containing three different HTML form fields (choose three from SUBMIT, TEXT, CHECKBOX, RADIO).
- Consider the bitmap representation of the free-space map, where for eachblock in the file, two bits are maintained in the bitmap. If the block is between0 and 30 percent full the bits are 00, between 30 and 60 percent the bits are01, between 60 and 90 percent the bits are 10, and above 90 percent the bitsare 11. Such bitmaps can be kept in memory even for quite large files. Describe how to keep the bitmap up to date on record insertions and deletions.What is the difference between the enhanced second-chance page-replacement algorithm and the FIFO page-replacement algorithm?With the LRU page replacement policy and enough space for storing 3-page frames, the memory page reference string 'A B CBADABCDABA CBD', What are the identities of pages in the frames when the reference string has completed? Lüffen birini seçin: O a. 7 page faults O b. 10 page faults O c. 9 page faults O d. 6 page faults O e. 5 page faults O f. 8 page faults