J277 1.2 Practice

J277 1.2 Practice

10th Grade

75 Qs

quiz-placeholder

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J277 1.2 Practice

J277 1.2 Practice

Assessment

Quiz

Computers

10th Grade

Practice Problem

Medium

Created by

F Khalifa

Used 8+ times

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75 questions

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1.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

What is the binary equivalent of the denary number 5?

Answer explanation

The binary equivalent of the denary number 5 is 00000101. This is derived by converting 5 into binary, where 1 represents the value and 0 represents the absence of value in each bit position.

2.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Convert the binary number 11010111 to denary.

Answer explanation

To convert the binary number 11010111 to denary, calculate: 1*2^7 + 1*2^6 + 0*2^5 + 1*2^4 + 0*2^3 + 1*2^2 + 1*2^1 + 1*2^0 = 128 + 64 + 0 + 16 + 0 + 4 + 2 + 1 = 215. Therefore, the correct answer is 215.

3.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

What is the denary equivalent of the binary number 10101010?

Answer explanation

To convert the binary number 10101010 to denary, calculate: 1*2^7 + 0*2^6 + 1*2^5 + 0*2^4 + 1*2^3 + 0*2^2 + 1*2^1 + 0*2^0 = 128 + 0 + 32 + 0 + 8 + 0 + 2 + 0 = 170. Therefore, the denary equivalent is 170.

4.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Convert the denary number 18 to an 8-bit binary number.

Answer explanation

To convert the denary number 18 to binary, divide by 2 repeatedly: 18/2=9, 9/2=4, 4/2=2, 2/2=1, 1/2=0. The remainders read from bottom to top give 10010. As an 8-bit binary, it's 00010010, which is the correct answer.

5.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

What is the binary equivalent of the denary number 255?

Answer explanation

The binary equivalent of the denary number 255 is 11111111. Each bit represents a power of 2, and 255 in binary is achieved by setting all 8 bits to 1.

6.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Add the binary numbers 11001001 and 00011110.

Answer explanation

To add the binary numbers 11001001 and 00011110, align them and add each column from right to left, carrying over when the sum exceeds 1. The correct sum is 11100111, but the answer choices indicate 0, which is incorrect.

7.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Add the binary numbers 10101010 and 01010101.

Answer explanation

To add the binary numbers 10101010 and 01010101, align them and add each column, carrying over as needed. The result is 11111111, which is 255 in decimal. However, the correct answer is 0, indicating a misunderstanding in the question.

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