Question 1hardmultiple choice
Full question →hardmultiple choiceObjective-mapped
Exhibit
{
"device": {
"hostname": "Branch-R1",
"interfaces": [
{"name": "Gig0/0", "status": "up"},
{"name": "Gig0/1", "status": "down"}
]
}
}Based on the JSON data, what is the value associated with the device hostname field?
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
device
This is wrong because `device` is the name of the outer object, not the value of the hostname field.
B
Best answer
Branch-R1
This is correct because the key `hostname` inside the `device` object is assigned the string value `Branch-R1`.
C
Distractor review
hostname
This is wrong because `hostname` is the key name, not the value stored under that key.
D
Distractor review
Gig0/0
This is wrong because `Gig0/0` is the value of an interface name field inside the interfaces array.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is confusing the JSON key "hostname" with its value or mistaking other strings like "device" or interface names for the hostname. Candidates may incorrectly select the key name itself or unrelated values, overlooking that the hostname is the string assigned to the key. This mistake often happens because the question asks for the value associated with the hostname field, not the field name or other JSON elements. Misreading the JSON structure leads to incorrect answers and reflects a lack of understanding of basic JSON parsing, which is essential for automation tasks in Cisco environments.
Technical deep dive
How to think about this question
In JSON data structures used for network automation and programmability, each device configuration is represented as an object with key-value pairs. The key "hostname" specifically identifies the device's name, which is crucial for network identification and management. This hostname value is a string assigned within the device object, allowing scripts and automation tools to reference the device uniquely in configurations or monitoring tasks. When parsing JSON data for Cisco device automation, the key "hostname" must be distinguished from other keys or values. The correct value associated with "hostname" is the string assigned directly to it, such as "Branch-R1" in this example. This value is used in network automation scripts to target the device for configuration changes or data collection, making it essential to correctly identify the hostname field's value rather than confusing it with keys or unrelated values like interface names. A common exam trap is mistaking the key name "hostname" for its value or confusing other strings in the JSON, such as interface names or object labels, as the hostname. In practical networking, misidentifying the hostname can cause automation scripts to fail or apply configurations to the wrong device. Understanding the JSON structure and correctly extracting the hostname value ensures accurate device identification and reliable automation workflows.
KKey Concepts to Remember
- JSON data structures use key-value pairs where the key identifies the field and the value holds the actual data, such as a device hostname.
- The hostname field in a device object stores the string that uniquely identifies the network device in automation scripts.
- Automation tools rely on correctly parsing the hostname value to target devices accurately for configuration and monitoring.
- Confusing JSON keys with their values leads to errors in network automation and misconfiguration in Cisco environments.
- The hostname value is distinct from interface names or object labels and must be extracted precisely from the JSON data.
- Understanding JSON parsing is fundamental for Cisco automation and programmability tasks covered in the CCNA exam.
- Correctly identifying the hostname value ensures reliable device management and prevents automation failures.
- JSON parsing skills help network engineers interpret device configurations and automate tasks efficiently in Cisco networks.
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 data structures use key-value pairs where the key identifies the field and the value holds the actual data, such as a device hostname.
What is the correct answer to this question?
The correct answer is: Branch-R1 — In JSON, a field name and its value are not the same thing. Here, `hostname` is the key, and `"Branch-R1"` is the value stored under that key inside the `device` object. In plain language, the question is asking, “What actual hostname did the data assign to the device?” The answer is `Branch-R1`. This is a foundational automation skill. You do not need advanced programming knowledge to answer it, but you do need to read nested key-value structures carefully.
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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