a. Consider the following segment table: Segment Base Length No. 0 1219 700 1 2300 04 2 90 100 3 1327 880 4 1952 306 The generated logical address consists of two parts: Segment Number and Segment Offset. Based on logical address composition, calculate (or Map) the physical address of below given logical addresses: [7 Marks] Logical addresses are: (0,730); (1, 2); (2, 100); (3, 625); and (4. 195) b. A paging scheme uses a Translation Look-aside Buffer (TLB). A TLB-access takes 10 ns and a main memory access takes 50 ns. What is the effective access time (in ns) if the TLB hit ratio is 90% and there is no page-fault? [3 Marks]