Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A network engineer sends an HTTP GET request to a controller API and receives status code 401. What does that response indicate?
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
Distractor review
The API endpoint does not exist
Distractor.
B
Distractor review
The request was successful but returned an empty body
Distractor.
C
Best answer
Authentication is required or the token is invalid
Correct choice.
D
Distractor review
The server is overloaded and cannot process the request
Distractor.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking the 401 Unauthorized status code for a 403 Forbidden or 404 Not Found error. Candidates often assume a 401 means the API endpoint is missing or the server is overloaded, but 401 specifically signals that authentication credentials are missing, invalid, or expired. Misinterpreting this can lead to incorrect troubleshooting steps, such as checking the API URL or server health instead of focusing on authentication tokens or credentials. Understanding the precise meaning of 401 helps avoid wasting time and ensures proper handling of API security in Cisco network automation.
Technical deep dive
How to think about this question
HTTP status code 401 Unauthorized is a standard response indicating that the client request has not been applied because it lacks valid authentication credentials for the target resource. In the context of network automation and programmability, when a network engineer sends an HTTP GET request to a controller API, the server expects proper authentication tokens or credentials to verify the client's identity before granting access. Without valid credentials, the server refuses the request to protect sensitive network configurations and data. The decision process behind returning a 401 status code involves the server checking the Authorization header or other authentication methods such as OAuth tokens, API keys, or basic authentication. If these credentials are missing, expired, malformed, or invalid, the server responds with 401 to prompt the client to authenticate properly. This mechanism ensures that only authorized users or systems can interact with network controllers, preventing unauthorized access or configuration changes. A common exam trap is confusing HTTP 401 Unauthorized with other HTTP status codes like 403 Forbidden or 404 Not Found. While 401 specifically indicates missing or invalid authentication, 403 means the client is authenticated but does not have permission, and 404 means the resource does not exist. Practically, in Cisco network programmability, receiving a 401 means the engineer must verify the authentication token or credentials used in the API request before retrying, ensuring secure and controlled access to network devices.
KKey Concepts to Remember
- HTTP 401 Unauthorized status code indicates the client request lacks valid authentication credentials required by the server.
- Cisco network controllers require valid authentication tokens or credentials in API requests to grant access to network resources.
- A 401 response prompts the client to provide or refresh authentication credentials before retrying the API request.
- Authentication failure causing a 401 can result from missing, expired, malformed, or invalid tokens in the HTTP request headers.
- HTTP 401 differs from 403 Forbidden, which means authenticated clients lack permission, and from 404 Not Found, which means the resource does not exist.
- Proper handling of 401 responses ensures secure access control in Cisco network programmability and prevents unauthorized configuration changes.
- API clients must include correct Authorization headers or tokens to avoid 401 errors when interacting with Cisco network controllers.
- Understanding HTTP status codes is essential for troubleshooting automation and programmability tasks in the CCNA 200-301 exam context.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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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 router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
HTTP 401 Unauthorized status code indicates the client request lacks valid authentication credentials required by the server.
What is the correct answer to this question?
The correct answer is: Authentication is required or the token is invalid — HTTP 401 means the request is not authorized because valid authentication credentials were not supplied or were rejected. In practice, this usually means the token is missing, expired, malformed, or otherwise invalid.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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