Compare the frequencies used by NFC and the different RFID standards.
What will be an ideal response?
Different RFID standards use diverse frequencies and unique protocols. While NFC uses the 13.56-MHz band, the different RFID standards span at least six different radio bands, from as low as 120 KHz to as high as 10 GHz. RFID needs these different bandwidths to support the many different applications and environments.
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An assignment of the value of a conditional expression to a variable (x =y?z:w;) can always be replaced by
a) a switch statement with assignment statements for its case statements. b) one or more ifs with else clauses and assignment statements for its true and false clauses. c) one or more nested while loops with assignments for the bodies of the loops. d) one or more ifs without any else clauses and assignment statements for its yes_statement(s). e) none of these is correct.
Among the Fitting commands, the ____ command is used when the frame size must remain the same and it is okay if the image is distorted when stretched or shrunk to fit the frame.
A. Allow distortion B. Fit frame to content C. Fit content proportionally D. Fit content to frame
A user support specialist who does not enjoy the problem-solving process will probably not enjoy user support as a career path.
Answer the following statement true (T) or false (F)
Some operating systems perform buffered I/O. In this scheme, an output request is accepted from a user, and the user is informed of the normal I/O completion. However, the actual physical write operation is performed later, at a time convenient to the operating system. Discuss the effect of buffered I/O on integrity in a DBMS.
What will be an ideal response?