Explain how memory protection is implemented in virtual memory systems with segmentation.
What will be an ideal response?
Protection is implemented via the address translation mechanism and the segment
map table.A process may reference only its own segments listed in the table (otherwise a
segment-addressing exception occurs). A process may reference only locations contained
within the range available on a given segment (otherwise a segment-overflow exception
occurs).A process may perform only allowed operations on each segment as specified by a
read, write, execute access-control mechanism (otherwise a segment-protection exception
occurs).
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Assume that your company uses a release methodology for its sales system. The current version is 5.5. Decide whether each of the following changes would justify a version 6.0 release, or be included in a version 5.6 update: (a) Add a new report, (b) add a Web interface, (c) add data validation checks, (d) add an interface to the marketing system, and (e) change the user interface.
What will be an ideal response?
Write the pseudocode to define a six element array called "scores," and then allow a user to enter 6 scores and store them in the array using a for loop.
What will be an ideal response?
A(n) ______ tablet has a screen in its lid and a keyboard in its base, with the lid and base connected by a swivel-type hinge.
A. convertible B. detachable C. slate D. ultrathin
A declaration is enclosed by which of the following character pairs?
A. () B. <> C. [] D. {}