Which of the following statements multiplies a variable by 16?
A. var << 2
B. var << 4
C. var << 16
D. var >> 2
E. var >> 4
Answer: B
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Which of these statements is true concerning inheritance and virtual functions?
A. Virtual functions can be used without derived classes for specifics. B. A virtual function may be declared and implemented in any C++ class. C. Derived classes must always have virtual functions. D. Base classes always have virtual functions.
The SCAN strategy often exhibits significantly higher throughput than the C-SCAN algorithm. However, system designers sometimes choose C-SCAN over SCAN.Why might this decision be justified?
What will be an ideal response?
The SQL ___________ statement modifies information in a database.
a) SELECT b) MODIFY c) CHANGE d) UPDATE
When information is arranged as records in rows and fields in columns, you can ________ the data
A) store B) update C) release D) query