Have a look at the lines of code below. Over the next 3 questions, we will write code that opens a file
named MyName. txt, read the first line from the file MyName. txt and display it, and then close it.

What should line number 20 be? The aim is to open a file named MyName. txt. Enter the entire line 20 i. e. start with File file =..

20 File file = new ;
21 Scanner inputFile = new Scanner(file);
22 if (inputFile. hasNext())
23 {
24 String str =;
25 System. out. println(str);
26 }
27 ;

Drag each label to the correct location on the image list the do’s and don’ts of safeguarding your password. a. keep yourself logged in when you leave your computer.b. don’t write your password down and leave it where others can find it.c. share your password with your friends.d.each time you visit a website,retain the cookies on your computer.e. use a long password with mixed characters.1. do's 2. don'ts

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)?

The basic work area of the computer is it screen that you when you first fire up your computer