Explanation:
A centralized database (sometimes abbreviated CDB) is a database that is located, stored, and maintained in a single location.
 
        
             
        
        
        
Since no answer choices, have to deduce it is Private Networks
        
                    
             
        
        
        
There are different ways to ensure safety of devices. The best protection to implement to address your concerns is to use cable locks to chain the laptops to the desks.
- The use of laptop locks is as good as when compared to bicycle chain locks. One can do this by looking for a big, immovable object, such as one's desk, and thereafter you wrap the metal cable around it and then insert the lock into your laptop's lock slot.
With this, your computer becomes theft-proof.
Thia will give you piece of mind as you will not be restless anymore.
Learn more about Laptop security from
brainly.com/question/24956493
 
        
             
        
        
        
Answer:
The answer is Frequency Spectrum.
Explanation:
The frequency spectrum is range of all component frequencies.It contains all the waves which are as following:-
Gamma Rays
X-Rays
Ultraviolet
Visible light.
Infrared
Micro wave
Radio wave
These all waves have their range of frequencies.The waves that are visible to us is only the visible light.
 
        
             
        
        
        
You should know the units :))))))))))))