Which of the following statements is false?
a. Scanner method next reads characters until any white-space character is encountered, then returns the characters as a String.
b. To call a method of an object, follow the object name with a comma, the method name and a set of parentheses containing the method’s arguments.
c. A class instance creation expression begins with keyword new and creates a new object.
d. A constructor is similar to a method but is called implicitly by the new operator to initialize an object’s instance variables at the time the object is created.
B
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Disk scheduling algorithms are designed to minimize ________ and/or ________, depending on the system’s requests.
a) seek time, rotational latency b) seek latency, rotational time c) request rate, turnaround time d) none of the above
Suggest a changeover method for the new billing system and provide specific reasons to support your choice. If you recommend phased operation, specify the order in which you would implement the modules. If your recommendation is for pilot operation, specify the department or area you would select as the pilot site and justify your choice.
What will be an ideal response?
Which of the following statements are true?
Consider the following two Java code segments: Segment 1 Segment 2 ``` int i = 0; for (int i = 0; i <= 20; i++) { while (i < 20) { System.out.println(i); i++; } System.out.println(i); } ``` a. The output from these segments is not the same. b. The scope of the control variable i is different for the two segments. c. Both (a) and (b) are true. d. Neither (a) nor (b) is true.
Answer the following statement(s) true (T) or false (F)
Current research indicates that a long, random string of words, such as correct horse battery staple is more secure than a random series of letters, numbers, and symbols that is short enough to be remembered.