Answer:
Databars and Sparkliness are key types of conditional formatting in excel.
Explanation:
Databars show the relative magnitude of values in a dataset. Sparkliness are tiny charts that reside in a cell in excel. These charts are used to show the trend over the time or variation in the dataset.
 
        
             
        
        
        
Answer: 
Defragmenting, and optimizing, also on Windows to not use Paging unless you have an SSD. And to install a lightweight OS like Windows 11 super-lite, Linux etc. 
 
        
             
        
        
        
Answer:
sectors
Explanation:
hard disk contain tracks which are further divided into sectors, for storage purposes.