What is the difference between loosely coupled and tightly coupled parallel processor architecture? Figure illustrates the architecture of the Non-Uniform Memory Access (NUMA). 31 Cache L2 Cache Main Memory 1 Processor N-1 rocessor 1-m | 16 L2 Cache Directory Processor N-m 12 Cache Processor 2-1 1 Cache L2 Cache Interconnect Network 10 150 31 Cache 12 Cache Directory Main Memory N Figure 2: Non-uniform Memory Access (NUMA) ii) What kind of cluster characteristic is observed in Figure ? Main Memory 2 i) How many Symmetric Multiprocessors are presented in Figure 2 if N is set to 7?