The close() method does not break the connection between a file's external name and the file stream object.
Answer the following statement true (T) or false (F)
False
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Phase 1 of the Extended Two-Phase Commit Protocol is identical to Phase 1 of the two-phase commit protocol we have described. Phase 2 of the extended protocol is as follows:
Phase Two. If the coordinator received at least one “aborting” vote during Phase 1, it decides to abort, deallocates the transaction record from its volatile memory, sends an abort message to all cohorts that voted “ready,” and terminates the protocol. If all votes are “ready,” the coordinator enters its uncertain period, forces a willing to commit record (which contains a copy of the transaction record) to its log, and sends a commit message to each cohort. Note that the transaction is not yet committed. If a cohort receives an abort message, it decides to abort, rolls back any changes it made to the database, appends an abort record to its log, releases all locks, and terminates. If a cohort receives a commit message, it decides to commit, forces a commit record to its log, releases all locks, sends a done message to the coordinator, and terminates the protocol. The coordinator waits until it receives the first done message from a cohort. Then it decides to commit, forces a commit record to its log, and waits until it receives a done message from all cohorts. Then it writes a completion record to its log, deletes the transaction record from its volatile memory, and terminates. Describe timeout and restart procedures for this protocol. Showthat this protocol blocks only when the coordinator and at least one cohort crash (or a partition occurs) or when all cohorts crash. Give an example where the transaction aborts even though all cohorts voted “ready.” What will be an ideal response?
How can you find the phone number for Ace Electronics in a file named phone that contains a list of names and phone numbers? Which command can you use to display the entire file in alphabetical order? How can you dis- play the file without any adjacent duplicate lines? How can you display the file without any duplicate lines?
What will be an ideal response?
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Indicate whether the statement is true or false
Match each item with the correct statement below.
A. B. C. Tab on the ribbon used to change document themes. D. Incorporate colors, fonts, effects, and styles that can be applied to a Word document or to documents in other Microsoft Office applications. E. Command that locates text, headings, footnotes, graphics, page breaks, comments, formatting, and other items within a document. F. G. Places the first line of a paragraph at the left margin and all other lines of the paragraph at the first tab. H. Places information at the top of each page in a document. I. Command used to format long quotations appropriately. J. Command used to prevent a page break between paragraphs you want to keep together. K. L. Sets the distance between the edge of the paper and the print. M. N. Command used to apply highlights to all occurrences of a word or phrase. O. P. Command used to prevent single lines of text to be left at the bottom of the page or at the top of the page.