You work for an aircraft manufacturing company. Your company monitors each flight made in one of the company's aircraft, and uses this information to determine potential upgrades to future aircraft. Currently, the company stores this data in a single cloud database server. However, the company now needs to share this data with certain customers, but each customer cannot be allowed to see the other customers' data. What cloud concept should thecompany implement to share data from its server to multiple customers, without letting each of them see the others' data? {Ans: Multitenancy}Which server type in the VoIP protocol acts as a mediator between the client and server and verifies whether or not a user is allowed to make a call? {Ans: Registrar}Which of the following protocols enhances CSMA to avoid collisions in the first place? a. Aloha b. CSMA/CA c. CSMA/CD d. VTCSMA {Ans: b. CSMA/CA}If the physical layer delivers 1000 bits to the receiver, but the receiver only receives 900 bits, how could you describe the behavior of the physical layer? a. Reliable b. Error-free c. Unreliable d. Compressed {Ans: c. Unreliable}If you are working for a company that wants to transition FTP to SFTP,