$1.$ Which tier in the three$-$tier architecture deals with the actual database management system?$2.$ What is the first level in the three$-$tier architecture called?$3.$ Why do we need three tiers in the three$-$tier architecture?$4.$ What does the application server level in the three$-$tier architecture deal with?$5.$ What is the second level in the three$-$tier architecture called?$6.$ Which data model specializes in entities, relationships, and attributes that are used by database designers?$7.$ What advantage does a Bus have over a Ring? If one computer fails, the network keeps working Its cheaper It uses less cable$8.$ Which one is the technical term that describes the layout of connections in a network? Network Topology Standalone Computer Network Node Workstation$9.$ Which of the following is a disadvantage of a star network? If a central switch or server fails, the whole network is down Requires a high performance switch or server in the centre as all traffic passes through it$.$ Extra hardware such as hubs and switches may be needed All $3$ of them $10.$ Which network topology is the hardest to add a new computer to$?$ Ring Star Bus $11.$ Which network topology has a central hub or switch, connected to all other devices? Star Mesh Bus Ring $12.$ In a star network Each device is connected to a switch or hub Each device connects to each other Each device is connected in a line Each device is connected to a terminal $13.$ Choose all that are true about star networks All devices have a connection to a central switch or server They are the most fault tolerant type of network If one connection fails, only that one device is affected They can be expensive because of the large amount of cabling needed