A: [40 MARKS] Read the article and answer ALL questions in this section Most people are familiar with the social networking site Facebook. What many people may not realize is that behind the scenes, Facebook relies heavily on information systems to keep track of all the data associated with its billion-plus users. Facebook has become a juggernaut in the social networking world by amassing a huge user base and providing a platform for people to connect with friends and family members. All of this activity generates a lot of data, which Facebook must manage efficiently in order to keep the site running smoothly. To do this, Facebook uses a variety of information systems. These systems help Facebook track user