200-901 Understanding and Using APIs Practice Question
When using OAuth 2.0 client credentials flow with a Cisco API, what is the typical purpose of the access token?
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
✓
To authorize the client application to access resources
Client credentials flow is for server-to-server; the access token authorizes the client application to access resources on its own behalf, not on behalf of a user.
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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To identify the user's role
Why it's wrong here
Client credentials flow authenticates the application itself, not a user, so the token carries application identity and scopes rather than any user role. It is tempting because tokens are often associated with authorisation and roles in user-facing flows. Here the token authorises machine-to-machine API calls on the application's own behalf.
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To authenticate the user
Why it's wrong here
Client credentials flow authenticates the application itself, not a user; no user is present in this grant. The token authorises the client's API calls. It would authenticate a user under authorisation code flow, where a resource owner delegates access.
- ✓
To authorize the client application to access resources
Why this is correct
The client credentials flow issues an access token representing the application itself, not a user, and the API validates that token to authorise the requested resource access. It carries granted scopes and expiry, replacing user credentials in machine-to-machine calls.
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To encrypt the request payload
Why it's wrong here
The access token authorises API calls by conveying granted scopes; confidentiality comes from TLS, not the token. Encrypting payloads would be the role of transport or message-level encryption, so this misstates the token's function entirely.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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