Which Value Terminates a while loop != 999 Statement?

350-401 By islever Editorial Last updated Aug 2, 2026

Short answer

C A value equal to 999.

Question

A script contains the statement "while loop != 999:" Which value terminates the loop?

A value not equal to 999.
A value less than or equal to 999.
A value equal to 999. Correct Answer
A value greater than or equal to 999.

Key Takeaways

The question tests the ability to distinguish between a loop's continuation condition and its termination trigger, with the common trap being the reversal of logical expectations.

This question assesses fundamental understanding of boolean evaluation in programming loops. The community consensus strongly supports option C, as the while loop continues executing only while its condition remains true.

Common mistake: Option A is frequently selected by candidates who mistake the continuation condition for the exit condition, incorrectly assuming the loop stops when the inequality holds true.

Expert Analysis

Boolean Evaluation in While Loops

A while loop operates on a straightforward principle: it continues executing as long as its conditional expression evaluates to True. In this scenario, the condition is loop != 999. This means the loop will keep running whenever the variable loop holds any value other than 999.

Identifying the Termination Trigger

For the loop to terminate, the condition must eventually evaluate to False. The logical negation of loop != 999 is loop == 999. Therefore, the exact moment the variable loop is assigned the value 999, the condition becomes false, and the loop exits. This aligns perfectly with option C.

Analyzing Incorrect Options

Option A represents the state under which the loop actually runs, not terminates. As noted in community feedback, candidates often misread the prompt and select the continuation state instead of the exit state.
Options B and D introduce unnecessary mathematical comparisons (<=, >=) that do not align with the strict equality/inequality logic defined in the script.

Common Pitfalls & Exam Tips

Many test-takers fall into the trap of overthinking simple syntax or confusing while loops with until loops (found in languages like Bash or Ruby). Always translate the condition into plain English: Keep going while X is NOT 999. The moment X IS 999, you stop. This straightforward translation prevents logical reversals during high-pressure exam conditions.

Official Reference

https://docs.python.org/3/tutorial/controlflow.html#while-loops

This link opens the official vendor documentation in a new tab.

Exam Strategy

When analyzing loop questions, always mentally translate the condition into plain English before looking at the options. If unsure, substitute the values from each option back into the condition to see whether the loop would run or stop, ensuring you answer based on the exact wording of the question.

Community Votes

100%

100% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.

Discussion 6 contributions

Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.

From public community threads 6

shefo1 👍 7 Answered C

tricky question :) , pls be careful from all chatbots : The statement “while loop != 999:” creates a loop that continues executing as long as the value of the variable “loop” is not equal to 999. In other words, the loop will terminate when the value of “loop” becomes equal to 999. Therefore, the correct answer is C. A value equal to 999. When the value of “loop” reaches 999, the loop condition becomes false, and the loop stops executing.
falconer42003 👍 3 Answered C

A while continues as far the condition is true. The true condition is "Loop" variable to be different from 999. When the "Loop" variable is equal to 999 the condition is false then the while finish.
zbeugene7 👍 2

what the h-ell ???? CCNP , was it worth it ?
Zeruz 👍 1 Answered C

Read this statement as: "While the value is not equal than 999, then do all these actions (not shown in the example) and come back again to do another check" Only the value 999 finish the previous sentence because, you know, 999 is equal to 999. The correct answer is C.
chiacche 👍 1

while loop =999 : loop be terminated

Show 1 more comment

babanaber 👍 2 Answered A

not equal to

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