The ________ of a variable is the period during which it exists in memory.
a) scope
b) recursion
c) duration
d) length
c) duration
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The test-and-set instruction ________.
a) prevents deadlock b) prevents indefinite postponement c) eliminates the possibility that a thread is preempted between reading a value from a memory location and writing a new value to the memory location d) none of the above
Case Based Critical-Thinking Questions ? Case 2-1 Harold has been working as a real estate agent. He has a lot of housing data to report and needs help organizing his data sheet for an effective presentation. ? ? Harold would like to center a title across the top of his data. His data runs across five columns, from column A to column E. One way he could accomplish this is to _____.
A. type the data in A1 and Merge cells A1:A5 B. type the data in A1 and Merge cells A1:E1 C. type the data in C1 D. type the data in any column in row 1 and then choose Center from the Format menu
=IFERROR(value, value if error) is used to prevent the output to result an error warning. What is the result of: =IFERROR(7+8, "This is an error")
A. This is an error B. #VALUE C. 7+8 D. None of the others E. 15
Which of the following network topologies describes a network where each node is connected to every other node?
A. Bus B. Star C. Mesh D. Ring