Linux open-source software is a kind of: * Information system Operating system Database management system Business application For which of the following, RFID systems are best used? * Supply chain Internet access Customer intimacy Building security Locations with one or more access points in public places to provide Internet access? * WIFI Servers Hotspots Wireless sensor networks Which of the following is not considered among the competitive forces? * Traditional competitors Product differentiation Suppliers Customers An information system strategy based on keeping track of user preferences for their purchases and then recommending new items purchased by others: * Low cost leadership Customer intimacy Product differentiation o Focus on market niche