ISRO Quiz 2023 46

Which of the following statement is correct about the lexical analysis phase of the compiler?

Consider an IP of 200.49.89.99 and a subnet mask of 255.255.255.128. The network wishes to form subnets or explicitly configure zero subnet and DBA subnet.

Consider the below statements:

I. The zero subnet ID is 200.49.89.0

II. The last host of the zero subnet is 200.49.89.126

III. The first host of DBA subnet is 200.49.89.127

IV. The DBA of the DBA subnet is 200.49.89.255

Which of the following option is correct?

Match the following operations with data structure

Operation	Data structure
S1. For infix to postfix conversion	(a) Operator stack
S2. For postfix evaluation	(b) Operand stack
S3. For infix to prefix conversion	(c) Time complexity O(n)

Consider the relation Exam (eid, marks) assume that marks take non-null integers only. Also marks take the distinct value and the number of tuples is odd.

What does the below SQL Query outputs?

SELECT marks

FROM Exam E

WHERE (SELECT COUNT (*)

FROM Exam F

WHERE F.marks <E.marks) = (SELECT COUNT (*)

FROM Exam G

WHERE G.marks>E.marks );

The sum of two numbers is 462 and their highest common factor is 22. What is the minimum number of pairs that satisfy these conditions?