What is the Translation Lookaside Buffer or TLB

Question

What is the Translation Lookaside Buffer (or TLB)?

Answer 1

In a cached system, the base addresses of the last few referenced pages are maintained in registers named the TLB that aids in faster lookup. TLB contains those page-table entries which have been most recently employed. Generally, each virtual memory reference causes two physical memory accesses- one to bring appropriate page-table entry, and one to bring the wanted data. Using TLB in-between, this is diminished to just one physical memory access in cases of TLB-hit.