Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A network engineer queries a REST API and receives data in JSON format. Which statement about JSON is correct?
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
JSON is a transport protocol that replaces HTTPS
JSON is a data format, not a transport protocol.
B
Best answer
JSON stores data as key-value pairs and arrays
That is the core structure used in JSON.
C
Distractor review
JSON can be used only with Cisco DNA Center
It is widely used across many platforms and APIs.
D
Distractor review
JSON requires XML tags around each object
That would describe XML, not JSON.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is mistaking JSON for a transport protocol or confusing it with XML. Some candidates incorrectly believe JSON replaces HTTPS or requires XML tags, which is false. JSON is solely a data format used to represent information as key-value pairs and arrays, while HTTPS is a protocol that securely transports data. Another trap is assuming JSON is exclusive to Cisco DNA Center, whereas it is a universal format used across many APIs and platforms. Misunderstanding these distinctions can lead to incorrect answers or confusion about how network automation works in Cisco environments.
Technical deep dive
How to think about this question
JSON, or JavaScript Object Notation, is a lightweight data-interchange format widely used in network automation and programmability, including Cisco's REST APIs. It represents data as human-readable text using key-value pairs and arrays, making it easy for both humans and machines to parse and generate. JSON's structure supports nested objects and arrays, allowing complex data to be represented efficiently without verbose syntax. In the context of Cisco networking and the CCNA exam, JSON is the preferred data format for RESTful APIs because it simplifies data exchange between network devices and management platforms like Cisco DNA Center or third-party tools. Unlike transport protocols such as HTTPS, JSON is purely a data format and does not handle data transmission. Understanding that JSON stores data as key-value pairs and arrays helps network engineers correctly interpret API responses and automate network tasks effectively. A common exam trap is confusing JSON with transport protocols or XML. JSON does not require XML tags and is not limited to Cisco DNA Center; it is a universal format used across many platforms. Practically, network engineers must recognize JSON's role as a data representation format to avoid misconfiguring automation scripts or misinterpreting API responses, which could lead to automation failures or incorrect network state assessments.
KKey Concepts to Remember
- JSON represents data using key-value pairs and arrays, enabling structured and hierarchical data storage.
- REST APIs commonly use JSON to exchange data between network devices and management systems in Cisco automation.
- JSON is a data format and does not function as a transport protocol like HTTPS or TCP.
- JSON syntax does not include XML tags; it uses braces, brackets, colons, and commas to structure data.
- Network automation tools parse JSON responses to extract configuration and operational data from Cisco devices.
- JSON's lightweight and human-readable format simplifies scripting and debugging in network programmability tasks.
- Understanding JSON structure is essential for interpreting API responses and automating network device management.
- JSON is widely supported beyond Cisco DNA Center and is a standard format in many network and software platforms.
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?
JSON represents data using key-value pairs and arrays, enabling structured and hierarchical data storage.
What is the correct answer to this question?
The correct answer is: JSON stores data as key-value pairs and arrays — JSON represents data using key-value pairs and arrays. It is lightweight and widely used by APIs because it is easy for both humans and software to parse.
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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