FC0-U71 Tech Concepts and Terminology Practice Question
An IT instructor is teaching about binary arithmetic operations. Which TWO of the following are correct results of a logical XOR operation on the binary inputs 1 and 0? (Select TWO.)
⚠ Common exam trap
FC0-U71 often tests the misconception that XOR behaves like OR, where 1 XOR 0 might be confused with 1 OR 0, but XOR specifically requires inputs to be different to output 1.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
0 XOR 1 = 1
XOR outputs 1 whenever the two input bits differ, and here 0 and 1 are different. Option D (1 XOR 0 = 1) is also correct for the same reason: the inputs 1 and 0 are unequal, so the XOR result is 1. The unmarked options do not belong: A (1 XOR 0 = 0) and E (0 XOR 1 = 0) incorrectly claim a 0 result for differing inputs, while C (1 XOR 1 = 1) incorrectly claims a 1 result for equal inputs, since XOR of identical bits is always 0.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
1 XOR 0 = 0
Why it's wrong here
XOR outputs 1 when inputs differ, so 1 XOR 0 equals 1, not 0. The tempting error is confusing XOR with AND, which yields 0 for differing inputs. XOR would produce 0 only for identical inputs such as 0 XOR 0 or 1 XOR 1.
- ✓
0 XOR 1 = 1
Why this is correct
XOR outputs 1 only when its two inputs differ. Here the inputs are 0 and 1, which are unequal, so the result is 1. This satisfies the stem's request for a correct logical XOR result on the binary inputs 1 and 0.
- ✗
1 XOR 1 = 1
Why it's wrong here
XOR outputs 1 only when inputs differ, so 1 XOR 1 equals 0, not 1. This result matches AND or OR, which return 1 for matching 1 inputs. XOR would give 1 only for mixed pairs such as 1 XOR 0.
- ✓
1 XOR 0 = 1
Why this is correct
XOR outputs 1 when its two inputs differ, and 0 when they match. With inputs 1 and 0, the bits are unequal, so the result is 1. This satisfies the stem's requirement for a correct logical XOR result on those binary inputs.
- ✗
0 XOR 1 = 0
Why it's wrong here
XOR outputs 1 when inputs differ, so 0 XOR 1 equals 1, not 0. The tempting mistake is treating XOR like AND, which returns 0 unless both inputs are 1. XOR yields 0 only when both inputs match.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This FC0-U71 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FC0-U71 exam.