The correct options are Issues with other labels and without the TASK-342 label will appear in the results, Issues that include the TASK-342 label will be excluded from the results, and labels not in (TASK-342) returns an identical set of issues as labels != TASK-342.

Issues with other labels and without the TASK-342 label will appear in the results is correct because the query filters out issues that contain the TASK-342 label while including issues that have other labels. The operator in this context matches issues where the label field exists and does not include the specified value.

Issues that include the TASK-342 label will be excluded from the results is correct because any issue whose labels contain TASK-342 is removed by the expression, so those issues do not appear in the result set.

labels not in (TASK-342) returns an identical set of issues as labels != TASK-342 is correct because the two forms are equivalent for excluding issues that contain the TASK-342 label. Both expressions target membership and yield the same set of issues in typical JQL usage.

Issues that have no labels will be returned by labels != TASK-342 is incorrect because the != and not in operators do not match empty label fields. Queries that must include unlabeled issues need an explicit check using is EMPTY.

labels is not TASK-342 will behave the same as labels != TASK-342 is incorrect because that phrasing is not the proper way to express a membership comparison in JQL and it is not equivalent to the != or not in operators for labels.

Full AWS Practitioner Certification Question