Suppose that Two devices (DeviceX, Device) want to communicate using TCP. Assume that DeviceX has sent SYN message to Device to set the connection, what message should Devicey send to DeviceX if it agrees to set the connection? of 0 a. ACK O b. Nothing to send back OG SYN d. SYN/ACK In the ABAC policy, we consider the current user age as O a. Object attribute O b. Subjects attributes O c. Environment attributes O d. Access Right O e. All of the above O f. None of the Above Which statement is correct about hash functions? O a. Hashes are not unique; that is, two or more messages can have the same hash. O b. Hashes are unique; that is, two or more messages can not have the same hash. O c. Symmetric ciphers can be used as hash functions. O d. Hashes have variable output but fixed input sizes. O e A and B Of. A and C O g. All of the above Oh. None of the above