Free PCEP Bitwise Operations Questions and Answers 1

Question 1

What is the result of the bitwise AND operation `10 & 12`?

Accepted Answer

8

Answer

The binary representation of 10 is `1010` and for 12 is `1100`. The bitwise AND (`&`) operation compares each bit and returns 1 only if both bits are 1. Comparing `1010` and `1100` results in `1000`, which is the decimal number 8.

Question 2

What is the output of the bitwise OR operation `9 | 5`?

Accepted Answer

13

Answer

The binary representation of 9 is `1001` and for 5 is `0101`. The bitwise OR (`|`) operation compares each bit and returns 1 if at least one of the bits is 1. Comparing `1001` and `0101` results in `1101`, which is the decimal number 13.

Question 3

What is the result of the bitwise XOR operation `13 ^ 7`?

Accepted Answer

10

Answer

The binary representation of 13 is `1101` and for 7 is `0111`. The bitwise XOR (`^`) operation compares each bit and returns 1 only if the bits are different. Comparing `1101` and `0111` results in `1010`, which is the decimal number 10.

Question 4

What is the output of the bitwise NOT operation `~5`?

Accepted Answer

-6

Answer

The bitwise NOT (`~`) operator inverts all the bits of its operand. In Python, for an integer `x`, `~x` is equivalent to `-(x + 1)`. Therefore, `~5` is `-(5 + 1)`, which equals -6.

Question 5

What is the result of the bitwise left shift operation `6 << 2`?

Accepted Answer

24

Answer

The binary representation of 6 is `110`. The left shift (`<<`) operator shifts the bits of the number to the left by the specified number of places, filling the new positions on the right with zeros. Shifting `110` left by 2 places results in `11000`, which is the decimal number 24.

(PCEP) Certified Entry-Level Python Programmer Practice Test

(PCEP) Certified Entry-Level Python Programmer Practice Test

Free PCEP Bitwise Operations Questions and Answers 1