Answer:
system software is the software which control overall operation of the computer . For eg. Ms.dos ,window 2003 ,etc whereas application software is a software which work on the top of operating system to solve number of problems .For eg. Ms.word,Ms.excel,etc
 
        
                    
             
        
        
        
Ron will most likely want to buy tube lights since that is a good energy saver.
        
                    
             
        
        
        
The server should be able to block unauthorized access, a good firewall but still, enable those authorized to have an access. However, there should be security on vulnerable parts of the system that may lead to corruption and easy access to data thieves.
        
             
        
        
        
Answer:
A high availability hub is not required to enable or use the self-describing agent. You can optionally configure a high availability hub for improved availability and recovery if the hub fails. Network Layer – The network layer is responsible for creating a routing table, and based on the routing table, forwarding the input request. Some of the Devices used in the Network Layer are, Routers: A router is a switch-like device that routes/forwards data packets based on their IP addresses.
Explanation:
(hope this helps can i plz have brainlist :D hehe)