Difficulty: Easy
Correct Answer: None of the above
Explanation:
Introduction / Context:
Hardware options such as drive IDs or feature enables are often configured using jumper blocks. Each jumper position can represent a binary bit, and understanding the numeric range prevents misconfiguration.
Given Data / Assumptions:
Concept / Approach:
With three bits, the count of unique values is 2^3 = 8, ranging from 000 to 111 in binary. The highest value is 111, which equals 7 in decimal (and 7 in hex). None of the offered numeric choices (4, 6, F, 1) equals 7, so the correct selection must be “None of the above.”
Step-by-Step Solution:
Verification / Alternative check:
List all combinations: 000(0), 001(1), 010(2), 011(3), 100(4), 101(5), 110(6), 111(7). The largest is 7, confirming the conclusion.
Why Other Options Are Wrong:
4 and 6 are valid states but not the maximum; 1 is far below maximum; F corresponds to 1111 (four bits) and is impossible with only three jumpers.
Common Pitfalls:
Assuming hexadecimal naming without enough bits; confusing “three-position jumper block” with a 3-pin single jumper that selects among two states (that scenario uses one bit, not three independent bits).
Final Answer:
None of the above.
Discussion & Comments