API Lifecycle Vocabulary
Practice API lifecycle vocabulary: private beta, early access, general availability, deprecation, sunset dates, and version migration.
0 / 45 completed
1 / 45
An announcement says 'The API is in private beta.' What does private beta mean?
Private beta means the API is released to a select, invited group of users for early testing and feedback. It is not publicly available, and the API surface may still change based on feedback.
2 / 45
A blog post says 'We're accepting early access requests.' What is the purpose of an early access program?
Early access programs allow select developers to try an API before general availability. They help teams gather real-world feedback, identify issues, and build early adopter relationships and case studies.
3 / 45
A changelog entry reads 'The API reaches general availability (GA).' What does GA mean?
General Availability (GA) means the API is officially released to all users, is considered stable, and comes with standard support commitments. It signals that the API is production-ready.
4 / 45
Documentation says 'The v1 API is deprecated — migrate to v2 by Q3.' What does deprecated mean?
Deprecation means the API version is still functional but is on a path to retirement. The team will no longer add features to it and will eventually shut it down. Developers must migrate to the newer version before the sunset date.
5 / 45
An email says 'The sunset date for v1 is December 31.' What is a sunset date?
A sunset date is the hard deadline after which a deprecated API version is deactivated. After this date, any calls to the old version will fail. It gives developers a clear timeline for migration planning.
6 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.7 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
8 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
9 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
10 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
11 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.12 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
13 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
14 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
15 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
16 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.17 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
18 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
19 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
20 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
21 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.22 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
23 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
24 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
25 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
26 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.27 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
28 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
29 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
30 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
31 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.32 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
33 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
34 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
35 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
36 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.37 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
38 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
39 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
40 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
41 / 45
Sarah: "Hey team, I'm seeing a lot of 503 Service Unavailable errors when calling the /users endpoint. The response times are also significantly slower than usual."Sarah's observation points towards a problem with the API itself. A
503 Service Unavailable error often indicates that the server can't handle the current load, which could be due to high traffic or insufficient resources. Option C is incorrect because degradation for testing wouldn't typically manifest as widespread service unavailability; options B and D are less likely causes without specific rate limiting configurations or confirmed network issues.42 / 45
Mark comments on a PR: 'Just noticed the new user creation endpoint is returning an `HTTP 500` error. The documentation states this endpoint should be `stable'.' I'm seeing intermittent issues – it seems like the server might be overloaded during peak hours, but I haven't been able to reproduce reliably. Do you think we need to monitor resource utilization more closely?', Which of the following best describes stable in this context?
The word 'stable' in this scenario signifies that the endpoint is functioning as designed under typical operating conditions. It doesn't guarantee perfect performance or a complete absence of bugs; rather, it indicates that the current behavior is reliable enough for normal use cases. The misconception is often thinking 'stable' means perfectly robust, which isn't the intended meaning here – it's about consistent operation within expected parameters.
43 / 45
During a Slack conversation about the new 'Orders' API, David says: 'The response time for creating an order is consistently above 5 seconds. The documentation states that the endpoint should be 'performance optimized.' What does 'performance optimized' most likely mean in this context?
'Performance optimized' doesn't mean a wholesale redesign. It signifies that the endpoint – likely in terms of its code and infrastructure – needs adjustments to achieve acceptable response times. The goal is to reduce latency and improve efficiency, typically through techniques like caching or efficient database queries, rather than simply changing a timeout value (option A) or undertaking a massive refactor (option B).
44 / 45
PR Description
Subject: Initial API Endpoint - User Profile Retrieval
Body:
Hi Team,
Please review the attached PR. This implements the initial endpoint for retrieving user profile data from the /users/{id} API. The response is expected to be in JSON format, conforming to the schema outlined in the documentation. We've focused on providing a basic, functional implementation and anticipate further refinements based on your feedback. Note: This endpoint currently uses a temporary database connection for testing purposes only.
Thanks,
JohnThis question tests understanding of 'functional implementation.' The PR description indicates a basic, working version is being presented, which aligns with the concept of an API undergoing initial development. Options A and B describe more advanced stages (performance testing, backward compatibility) that aren't implied by this early-stage PR. Option D is an unrealistic guarantee for any API.
45 / 45
During a code review discussion, Alice says: 'The API documentation states the `/products/{product_id}` endpoint should be 'highly available.' We're seeing intermittent outages and slow response times. What does 'highly available' likely mean in this scenario?',
Consider the following options:
Consider the following options:
'Highly available' in an API context refers to its ability to remain operational and responsive under various conditions. The correct answer emphasizes redundancy and fault tolerance – key strategies for ensuring continuous service. Incorrect options misinterpret the term, suggesting strict performance SLAs (Option A), a limited throughput capacity (Option C), or a simple monitoring statement (Option D).
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