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AIF-C01 Practice Question: Which AWS service can be used to convert a…
Which AWS service can be used to convert a recorded speech file into text for further analysis?
⚠ Common exam trap
A common mix-up: candidates confuse Amazon Transcribe (speech-to-text) with Amazon Polly (text-to-speech), as both deal with speech but in opposite directions, leading candidates to select Polly when the question asks for converting speech into text.
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
✓
Amazon Transcribe
Amazon Transcribe is an automatic speech recognition (ASR) service that converts audio speech into text. It is specifically designed for this task, supporting both real-time streaming and batch processing of recorded speech files, making it the correct choice for converting a recorded speech file into text for further analysis.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Amazon Polly
Why it's wrong here
Amazon Polly performs the reverse direction, synthesising text into lifelike speech, so it cannot turn a recording into text. It is tempting because it is the headline AWS speech service, and it would be correct when the requirement is generating spoken audio output from written text.
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Amazon Translate
Why it's wrong here
Amazon Translate performs text-to-text language translation; it accepts text input and cannot ingest audio, so a speech recording cannot be converted. It is tempting because it processes language content, and it would be the correct choice when the requirement is translating already-transcribed text between languages.
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Amazon Rekognition
Why it's wrong here
Amazon Rekognition analyses images and video for objects, faces and labels; it does not transcribe audio, so a speech file yields no text. It is tempting because it is a managed AI service handling media, and it would be correct for detecting objects or faces within image or video content.
- ✓
Amazon Transcribe
Why this is correct
Amazon Transcribe applies automatic speech recognition to audio files, returning accurate transcripts for downstream analysis. It directly satisfies the stem's requirement to convert recorded speech into text, unlike Amazon Polly, which performs the reverse text-to-speech conversion, or Amazon Translate, which handles language translation rather than speech transcription.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This AIF-C01 practice question is part of Courseiva's free Amazon Web Services 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 AIF-C01 exam.