4. In computers, an integer can be represented by more than 8-bit, what is the largest positive integer that can be represented by a 16-bit integer? Give your answer in binary, hex and denary form.
a. Binary:
b. Hexadecimal:
c. Denary: (Show your working)

Which of these is most responsible for differences between the twentieth century to the twenty-first century?

Type the correct answer in the box. spell all words correctly. the managing director of a company sends a christmas greeting to all his employees through the company email. which type of network does he use? he uses an

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?