Briefly describe how a Wi-Fi network operates.
What will be an ideal response?
With a Wi-Fi wireless network, a user's computer, smartphone, or cell phone has a wireless adapter that translates data into a radio signal and transmits it using an antenna. A wireless access point, which consists of a transmitter with an antenna, receives the signal and decodes it. The access point then sends the information to the Internet over a wired connection. When receiving data, the wireless access point takes the information from the Internet, translates it into a radio signal, and sends it to the device's wireless adapter.
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What values will be in the boxes (these represent the computer’s memory) once the lines of code in have been performed? Be sure to show decimal points and full precision if the variable type is capable of holding that data!
``` int main() { int x = 7, y = 2, z = 45; double d1 = 7.0, d2 = 2.0; int n1, n2; double r, s,t; n1 = z/x; n2 = d1/d2; r = z/y; s = d1/d2 + x/y*z; t = d2/x + z/d1; ```
The enforcement of ________ integrity helps to maintain the integrity of a database
A) referential B) primary C) foreign D) mandatory
If users accidentally delete a record from a table, they can click the Undo button to add the record back to the table
Indicate whether the statement is true or false
The ____________, __________, and ____________ are the only three forms of control necessary.
a) switch, if, else b) sequence, selection, iteration c) break, continue, if…else d) for, while, do…while