Question 1easymatching
Full question →Match each data format or API term to its best description.
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easymatchingObjective-mapped
Match each data format or API term to its best description.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A common exam trap is confusing the roles of JSON and YANG in network automation. JSON is often mistaken as a data modeling language like YANG, but JSON is actually a lightweight data format used for data interchange. Another trap is assuming REST is a proprietary API instead of a standard architectural style using HTTP methods. Misunderstanding the purpose of tokens can also lead to errors, as tokens are not data formats or models but are used for API authorization. These confusions can cause incorrect matching of terms to descriptions in the exam.
Technical deep dive
How to think about this question
In network automation, understanding the difference between data formats, data models, API protocols, and security tokens is essential. JSON (JavaScript Object Notation) is a lightweight, text-based data format widely used for exchanging data between network devices and automation tools due to its simplicity and readability. YANG, on the other hand, is a data modeling language specifically designed to define the structure and constraints of network configuration and state data, enabling consistent and standardized management across devices. REST (Representational State Transfer) is an architectural style for designing networked applications. It uses standard HTTP methods such as GET, POST, PUT, and DELETE to perform operations on resources identified by URLs. RESTful APIs are popular in network programmability because they are stateless, scalable, and easy to integrate. Tokens are security credentials used in API authentication and authorization, ensuring that only permitted users or systems can access or modify network resources through the API. The exam often tests the ability to correctly identify these components and their roles. Confusing JSON with YANG or REST with a security mechanism can lead to incorrect answers. Practically, network engineers use YANG models to define device configurations, JSON to encode data exchanged via REST APIs, and tokens to secure those API calls. Understanding these distinctions helps in designing, troubleshooting, and automating Cisco networks effectively.
KKey Concepts to Remember
- JSON is a lightweight data format that structures data in a readable text form for easy exchange between network devices and automation tools.
- YANG defines standardized data models that describe the structure and constraints of network configuration and operational data.
- REST uses standard HTTP methods like GET, POST, PUT, and DELETE to enable stateless communication between clients and network devices via APIs.
- Tokens serve as security credentials that authorize and authenticate API access to protect network resources from unauthorized use.
- Network automation relies on combining YANG models with JSON data formats transmitted over RESTful APIs to configure and monitor devices.
- Misidentifying JSON as a data model or REST as a data format can lead to incorrect automation design and exam mistakes.
- Tokens are not data formats or models but are essential for securing API interactions in programmable networks.
- Understanding the distinct roles of JSON, YANG, REST, and tokens is critical for mastering Cisco network programmability concepts.
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 is a lightweight data format that structures data in a readable text form for easy exchange between network devices and automation tools.
What exam trap should I watch out for?
Common exam trap: answer the scenario, not the keyword: A common exam trap is confusing the roles of JSON and YANG in network automation. JSON is often mistaken as a data modeling language like YANG, but JSON is actually a lightweight data format used for data interchange. Another trap is assuming REST is a proprietary API instead of a standard architectural style using HTTP methods. Misunderstanding the purpose of tokens can also lead to errors, as tokens are not data formats or models but are used for API authorization. These confusions can cause incorrect matching of terms to descriptions in the exam.
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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