Final answer:
Ataxia with vertigo is not typical of a carotid territory transient ischemic attack or stroke, while the other options listed are indicative of cerebrovascular event in the carotid territory.
Step-by-step explanation:
A student inquired about which symptom is not suggestive of a carotid territory transient ischemic attack (TIA) or stroke. The options included ataxia with vertigo, aphasia, ipsilateral monocular blindness, contralateral body weakness, and contralateral homonymous visual field defects. Among these, the symptom 'ataxia with vertigo' does not typically suggest a carotid territory TIA or stroke. Symptoms like aphasia, ipsilateral monocular blindness, contralateral body weakness, and contralateral homonymous visual field defects are more indicative of cerebrovascular events affecting the carotid territory. Ataxia and vertigo are more commonly associated with disruptions in the cerebellum or the vestibular system, which are usually related to the vertebrobasilar circulatory system rather than the carotid system.