Answer:
Central Processing Unit
Explanation:
When the CPU puts the address of a peripheral onto the address bus, the input–output interface decodes the address and identifies the unique computer peripheral with which a data transfer operation is to be executed. 
 
        
             
        
        
        
Answer: A) Make any simple fixes on their own.
 
        
                    
             
        
        
        
Answer:
Did you mean layer 3 switch? Because a router always operates at layer 3
Explanation:
If the answer is yes, then a layer 3 is a switch that combines the functions of a switch and a router. So it is capable of operate layer 2 and layer 3. Some of its benefits are: Support routing between VLAN, decrease network latency because the packets don’t have to make extra hops to go through a router and reduce security management. But they are really expensive and lack of WAN functionality so they are used mostly for large intranet environments.
 
        
             
        
        
        
Once the reaction time experiment in your MakeCode micro:bit program is complete, Review the tutorial video to make sure you've completed all the steps correctly. 
<h3>What is reaction time experiment?</h3>
A  reaction time experiment is known to be one that has different set of neural processes. This experiment is known to be one that has been set up to measure or look into the response time for something that one can see.
Note that when the reaction time experiment in your MakeCode micro:bit program is complete, it is better to go over the tutorial video to be sure you that you have completed all the steps correctly. 
learn more about reaction time from
brainly.com/question/6167212