Name three purposes for which a gateway might be used.
What will be an ideal response?
Convert commonly used protocols (for example, TCP/IP) to a specialized or proprietary
protocol (for example, SNA used by legacy IBM mainframes or AppleTalk used by older
Macintosh computers)
Convert message formats from one format to another
Translate different addressing schemes
Link a host computer to a LAN
Provide terminal emulation for connections to a host computer
Direct e-mail to the right network destination
Connect networks with different architectures
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Give an example of a schedule produced by a nonstrict two-phase locking concurrency control that is not recoverable.
What will be an ideal response?
In a binary search, the item you are looking for is called the search key or the __________.
Fill in the blank(s) with correct word
In a ________ relationship exists between two tables when a record in one table is related to a single record in a second table
A) one-to-many B) many-to-many C) many-to-one D) one-to-one
Case-Based Critical Thinking QuestionsCase 1-1During your senior year, you are serving as a tutor in the computer science department, offering to help other students with their coursework. One of the most daunting topics for beginning students is keeping bitmaps and vectors straight. One of your tutees, Joe, is a case in point. Which of the following is NOT a true statement you can make to Joe as you explain bitmaps to him?
A. A 100x100-pixel bitmap graphic is simply a grid containing 10,000 colored pixels. B. JPEG and GIF are two of the most common file formats. C. If you enlarge a bitmap graphic, the edges become ragged. D. A bitmap graphic is a set of mathematical instructions that describe the color, outline, and position of all the shapes of the image.