Cisco Certified Support Technician (CCST) NetworkingAutomation and ProgrammabilityMedium
A network automation engineer is writing a Python script to interact with a network device's API. The device's API documentation specifies that all API calls require an API key to be included in the 'Authorization' header of every HTTP request. Which API concept does this requirement fall under?
- AAuthentication
- BRate Limiting
- CVersion Control
- DError Handling
Show answer & explanationAnswer & explanation
Correct answer: A. Authentication
Requiring an API key in the 'Authorization' header is a fundamental mechanism for 'authentication'. Authentication verifies the identity of the client making the API request, ensuring that only authorized entities can access the API's resources.
Why the other options are wrong
- B. Rate limiting restricts the number of API requests a client can make within a given timeframe, not how they identify themselves.
- C. Version control manages changes to the API over time, such as v1, v2, etc., not client identification.
- D. Error handling defines how the API communicates problems or failures to the client, not how the client identifies itself.
API Authentication
The process by which an API verifies the identity of a client (user or application) attempting to access its resources, often using API keys, tokens, or credentials.
- Verifies client identity
- Ensures only authorized access
- Commonly uses API keys, OAuth tokens, or basic auth
Memory trick: APIs need security: Authenticate, Authorize, Limit.