What should be done before any changes are made to a system that is experiencing a problem?
A. Examine the system
B. Backup data
C. Establish a Theory
D. Test your Theory
Answer: B
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A function can return a value of type T in one of several different ways. Which of these is correct? If correct, give a short declaration of a function that returns its value by these mechanism. Comment on the const methods of function return value. Comment on when there is danger involved in returning a reference of any kind from a function. Finally, which one of these returns an l-value and which an r-value?
a) By value b) By lazy evaluation. c) By reference d) By const value e) By const reference
mySQL is a popular ____________.
Fill in the blank(s) with the appropriate word(s).
Which RPM component works in the background of the package manager and contains a list of all information on all installed RPM packages?
A. RPM package manager B. RPM database C. RPM package D. Package label
Bluetooth emplpoys security mechanisms called "trusted devices," which have the ability to exchange data without asking any permission because they are already trusted to do so.
a. true b. false