Question 1mediummulti select
Full question →mediummulti selectObjective-mapped
Which two statements accurately describe JSON arrays?
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
Best answer
A JSON array is an ordered list of items.
This is correct because arrays are used to represent ordered collections.
B
Best answer
A JSON array is typically enclosed in square brackets.
This is correct because square brackets are the standard syntax for arrays.
C
Distractor review
A JSON array is the same thing as an OSPF area.
This is wrong because JSON arrays are data structures, not routing concepts.
D
Distractor review
A JSON array must always contain exactly one item.
This is wrong because arrays can contain zero, one, or many items.
E
Distractor review
A JSON array replaces the need for all keys in structured data.
This is wrong because arrays and keys serve different purposes.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking JSON arrays for networking concepts like OSPF areas or assuming they must contain exactly one item. Candidates might confuse arrays with objects or routing constructs, leading to incorrect answers. Another pitfall is thinking arrays replace keys in structured data, which is false because arrays and keys serve different purposes. This confusion arises from mixing data structure syntax with network protocol terminology. Understanding that JSON arrays are simply ordered lists enclosed in square brackets helps avoid these traps and ensures clarity when working with automation payloads in Cisco environments.
Technical deep dive
How to think about this question
JSON arrays are fundamental data structures used in automation and programmability, especially within Cisco networking APIs and configurations. They represent an ordered list of items, where each item can be a simple value like a string or number, or a complex object containing multiple key-value pairs. This ordered nature allows predictable iteration and processing of data elements, which is crucial when handling lists such as interfaces, VLANs, or routing entries in network automation scripts. The syntax of JSON arrays requires them to be enclosed in square brackets [ ]. This notation clearly distinguishes arrays from JSON objects, which use curly braces { }. Understanding this syntax is essential for parsing and generating JSON payloads correctly in Cisco automation tools like RESTCONF or NETCONF. Arrays can contain zero or more items, and their order is preserved, which is important when the sequence of elements affects network configuration or operational data. A common exam trap is confusing JSON arrays with unrelated networking concepts such as OSPF areas or assuming arrays must contain exactly one item. Arrays are purely data structures and do not represent routing domains or protocols. In practical Cisco automation, misinterpreting JSON syntax can lead to configuration errors or failed API calls. Recognizing arrays as ordered lists enclosed in square brackets helps avoid these mistakes and ensures accurate data handling in network programmability tasks.
KKey Concepts to Remember
- A JSON array represents an ordered list of items, preserving the sequence in which elements appear.
- JSON arrays are always enclosed in square brackets, distinguishing them from JSON objects that use curly braces.
- Each element in a JSON array can be a simple value or a complex object containing multiple key-value pairs.
- JSON arrays can contain zero, one, or many items, allowing flexible representation of data collections.
- In Cisco automation, JSON arrays commonly represent lists such as interfaces, VLANs, or routing entries in API payloads.
- JSON arrays do not replace keys in structured data; keys and arrays serve different roles in JSON syntax.
- Confusing JSON arrays with networking concepts like OSPF areas is a common mistake to avoid on the CCNA exam.
- Correctly identifying JSON array syntax is essential for parsing and generating valid automation and programmability data.
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?
A JSON array represents an ordered list of items, preserving the sequence in which elements appear.
What is the correct answer to this question?
The correct answer is: A JSON array is an ordered list of items. — JSON arrays are ordered lists enclosed in square brackets. In plain language, they are commonly used when an API needs to return multiple similar items such as interfaces, VLANs, or routes. Each element in the array might be a simple value or a more complex object. Arrays are therefore a normal structure for lists in automation and API payloads. The wrong answers usually confuse arrays with objects or claim properties they do not have. The two correct answers are the ones that preserve the ideas of list structure and square-bracket notation.
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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