QUESTION 16 Disk capacity Is the number of bytes it can store Is the number of cylinders of the disk Is the number of tracks of the disk Is the number of blocks on the track of the disk QUESTION 17 Which of the following is the unit of data transfer between the disk and main memory? File Block Controller Bit QUESTION 18 In B+ tree the node which points to another node is called Leaf node External node Final node Internal node QUESTION 19 Each node in a B+tree contains a and the associated search-key valued Pointer Chain Address Parent