Describe a PoE injector.
What will be an ideal response?
PoE injector is a small, inexpensive device that can inject power into an Ethernet cable. These injectors can be endspan devices (such as a network switch enabled to provide power on each port) or a midspan device, which is connected inline to each end device and adds power to the line. Using PoE injectors, a standard, non-PoE-enabled Ethernet switch can be used to supply the data while the PoE injector provides the power.
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__________ enable you to specify, with a single class declaration, a set of related classes.
a) Overloaded classes b) Overriden classes c) Generic classes d) Generics
We have shown the soundness of the algorithm in Figure 6.3—that if A ? closure then A ? X + F .Prove the completeness of this algorithm; that is, if A ? X + F ,then A ? closure at the end of the computation.
Use induction on the length of derivation of X ? A by Armstrong’s axioms.
The Avg operator is used to find the average of the values in a group
Indicate whether the statement is true or false
Why would you want to use the Increase Decimal or Decrease Decimal buttons on the Home tab?
What will be an ideal response?