Placement Papers - MCQ Practice Questions

If a string in Python is assigned as s = 'hello', what is the output of s[1:4]?

What is the primary advantage of using NoSQL databases over relational databases?

In the context of cybersecurity, what is a firewall?

What is the value of log₂(8)?

If the probability of an event A is 0.4 and event B is 0.3, what is the probability of both A and B occurring (assuming independence)?

A train travels from City A to City B at 60 km/h and returns at 40 km/h. If the total journey time is 10 hours, what is the distance between the two cities?

In a logical sequence: 2, 6, 12, 20, 30, ?, what is the next number?

Select the word that best completes the analogy: Ephemeral is to Permanent as Verbose is to ____

What will be the output of the following pseudocode? int x = 5; int y = 10; while(x < y) { x = x + 2; if(x == 9) continue; y = y - 1; } print(x, y);

If the compound interest on ₹8,000 at 10% per annum for 2 years is compounded annually, find the compound interest earned.