Virtual Labs

1. Which of the following is the binary representation of the decimal number 13?

a: 1101 Explanation

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b: 1011 Explanation

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c: 1001 Explanation

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d: 1110 Explanation

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2. What is the minimum number of bits required to represent the decimal number 100 in binary?

a: 6 Explanation

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b: 7 Explanation

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c: 8 Explanation

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d: 5 Explanation

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3. Which of the following C statements shifts the value of n right by 1 bit?

a: n = n << 1; Explanation

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b: n = n >> 1; Explanation

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c: n = n + 1; Explanation

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d: n = n - 1; Explanation

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4. What is the decimal value of the binary number 10110?

a: 22 Explanation

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b: 21 Explanation

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c: 20 Explanation

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d: 23 Explanation

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5. Which of the following is NOT a valid binary number?

a: 10101 Explanation

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b: 11012 Explanation

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c: 10010 Explanation

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d: 11100 Explanation

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6. Which C operator is used to perform a bitwise AND operation?

a: | Explanation

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b: & Explanation

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c: ^ Explanation

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d: ~ Explanation

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7. What is the result of 5 & 3 in C?

a: 1 Explanation

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b: 2 Explanation

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c: 0 Explanation

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d: 3 Explanation

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8. Which of the following best describes the purpose of shifting bits to the left in binary representation?

a: It divides the number by 2 Explanation

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b: It multiplies the number by 2 Explanation

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c: It adds 1 to the number Explanation

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d: It subtracts 1 from the number Explanation

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9. Which of the following is the binary representation of the decimal number 255?

a: 11111111 Explanation

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b: 1111111 Explanation

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c: 10000000 Explanation

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d: 10101010 Explanation

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10. Which of the following is true about the minimum number of bits required to represent a number n in binary?

a: It is always 8 Explanation

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b: It is always 16 Explanation

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c: It is the smallest integer k such that 2^k > n Explanation

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d: It is the largest integer k such that 2^k < n Explanation

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Numerical Representation