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AI-900 Practice Question: 'image captioning' in Azure AI Vision and how is…
This AI-900 practice question tests your understanding of 'image captioning' in azure ai vision and how is…. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
What is 'image captioning' in Azure AI Vision and how is it different from image tagging?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Best answer
Captioning generates a natural language sentence describing the scene; tagging returns individual concept keywords
Caption: 'A cat sitting on a sofa.' Tags: ['cat', 'sofa', 'indoor']. Captions provide narrative context; tags enable efficient filtering.
B
Distractor review
Captioning works on video; tagging works only on still images
Both can work on images — the distinction is output format: sentence vs. keyword list, not media type.
C
Distractor review
Image tagging is more accurate than captioning because it uses simpler classification
Accuracy depends on the task — captions are grammatically generated sentences while tags are discrete labels; they serve different purposes.
D
Distractor review
Captioning adds user-written descriptions; tagging uses AI to detect objects automatically
Both are AI-generated — captioning produces a natural language sentence while tagging returns individual concept keywords.
Common exam trap
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Technical deep dive
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Related practice questions
Related AI-900 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer wants to build a virtual assistant that can understand user intents such as 'Book a flight' or 'Check weather' and extract relevant entities like destination and date. The developer has a small set of labeled example utterances. Which Azure AI Language feature should the developer use?
Question 2
A developer is building a customer support chatbot using Azure OpenAI. The chatbot should never reveal its system instructions or internal configuration. The developer wants to add a rule at the beginning of the conversation to prevent prompt injection attacks. Which technique should they use?
Question 3
A developer is using Azure OpenAI Service to generate product descriptions from technical specifications. The generated descriptions sometimes include plausible-sounding but incorrect details (hallucinations). The developer wants to ensure the model's responses are strictly based on the provided product data and does not add any external or invented information. Which approach should the developer use?
Question 4
A developer is using Azure OpenAI with GPT-4 to build a chatbot that answers legal questions based on a company's internal policy documents. The developer wants the model's responses to be maximally deterministic and factual, avoiding any creative or speculative language. Which parameter should the developer set to the lowest possible value in the API call?
Question 5
A developer is using Azure OpenAI to generate creative product descriptions. The outputs are often repetitive and lack variety. The developer wants to increase the diversity of the generated text while still keeping it coherent. Which parameter should the developer increase?
Question 6
A developer is using Azure OpenAI Service to generate product descriptions. They want the output to be highly focused and deterministic, with less randomness. Which parameter should they decrease?
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FAQ
Questions learners often ask
What does this AI-900 question test?
Static NAT maps one inside address to one outside address.
What is the correct answer to this question?
The correct answer is: Captioning generates a natural language sentence describing the scene; tagging returns individual concept keywords — Image tagging returns a list of detected concepts as individual keywords ('cat', 'indoor', 'furniture', 'sofa'). Image captioning generates a complete natural language sentence describing the scene ('A cat sitting on a sofa next to a window'). Captions provide more context and are suitable for accessibility (alt text), content search, and user-facing descriptions. Tags are faster for bulk categorisation and filtering.
What should I do if I get this AI-900 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AI-900 NAT questions on configuration and troubleshooting.
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