Question 3 Study various SSI features and HA support for clusters and answer the following questions, providing reasons for your answers. Identify some example cluster systems that are equipped with these features. Comment on their implementation requirements and discuss the operational obstacles to establish each SSI feature in a cluster system. a. Single entry point in a cluster environment b. Single memory space in a cluster system c. Single file hierarchy in a cluster system d. Single I/O space in a cluster system e. Single virtual networking in a cluster system f. Single networking in a cluster system g. Single point of control in a cluster system h. Single job management in a cluster system Page 1 Parallel and Distributed Computing i. Single user interface in a cluster system j. Single process space in a cluster system Question 4 Explain the following terms on cluster job management systems. a. Serial jobs versus parallel jobs b. Batch jobs versus interactive jobs c. Cluster jobs versus foreign (local) jobs d. Dedicated mode, space-sharing mode, and timesharing mode e. Independent scheduling versus gang scheduling