In RFID, what does the term "backscatter" mean?
A) It refers to the reflection of the radio waves striking the RFID tag and reflecting back to the transmitter source.
B) It refers to the radio waves striking the RFID tag and transmitting a signal back to the receiver source.
C) It only occurs when both the transmitter and RFID tag share common data patterns.
D) It refers to the reflection of the infrared waves striking the RFID tag and reflecting back to the transmitter source.
A
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The transactions T, U and V use strict two-phase locking and their requests are interleaved as follows:
Assuming that the recovery manager appends the data entry corresponding to each Write operation to the log file immediately instead of waiting until the end of the transaction, describe the information written to the log file on behalf of the transactions T, U and V. Does early writing affect the correctness of the recovery procedure? What are the advantages and disadvantages of early writing?
An SD card is an example of a(n) ________ card
Fill in the blank(s) with correct word
What is the value of num after the following statement is performed?
``` num = 2 * Math.pow( 2, 3 ); ``` a) 16 b) 18 c) 64 d) 8
The process in which the master DNS server for a zone notifies secondary servers of changes to the zone so that the secondary servers can check to determine whether they need to initiate a zone transfer is called dns notify
Indicate whether the statement is true or false