Virus such as a Trojan or Worm, and can cause network crashes.
        
                    
             
        
        
        
Answer: Use the Design view
Explanation: Using a Design view to modify a report is the most flexible way to modify a report as opposed to a layout view which is another way to modify a report .  The design view  is flexible in the sense that it provides a more outlined structured view of your report that you can see the header and footer for the report. it also affords you the ability to control your  report in terms of changing many properties, adjusting images, labels  and editing  text box, etc.
 
        
             
        
        
        
False......................
 
        
             
        
        
        
Answer:
Bus Topology
Explanation:
 In local area networks (LANs), Bus topology is used to connect all the computers on the single cable. This cable is called backbone of the network.  In this type of network when a computer sends data, it will be received on entire network. 
For Example
In water line system, all the taps that are connected to single pipe. If the pipe or a single tap broken this will affect the whole system.
Entire system can be crash if any node or wire will break.