9. An RMI, a) invokes a function on a remote machine. b) invokes an object on a remote machine. c) invokes a method on a remote machine. d) invokes a method on a remote object. e) none of the choices. 10. Which of the following is not correct: a) both RPCs and RMIs require that the local and remote machines be ON at the same time. b) RPC and RMI are basically the same. c) when using and RPC or RMI the result on a remote machine is sent from the remote machine to the local machine. d) none of the choices. 11. In the figure shown, which of the following is correct: process A process B Implementation of doit rdoilla,b) r = doit a.b) proc: "doit type1: val(a) type2: valt) proc:"do" Lype1: valla) type2: valt) OS proc: doit type1: valo) type2: valb) OS a) process B calls the function doit(a,b) and sends the result to process A b) process A is a server and process B is a client c) the return value "r" of the function doit(a,b) is an integer d) process B is a client e) none of the choices 12. A logical clock is needed in a distributed system because, a) there is a need to copy the local time of one node to another node b) there is a need for global synchronisation c) there is a need for local synchronisation d) there is a need for capturing chronological and causal relationships of processes e) none of the choices