6.7 Recognize Components of JSON-encoded Data 200-301 Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A network engineer is debugging a script that sends a JSON payload to a REST API. The API returns a 400 Bad Request error. The payload is: {"interface": "G0/1", "vlan": 10, "description": "uplink",}. Which issue is most likely causing the error?

   • AThe trailing comma after the last key-value pair.
   • BThe VLAN ID is not enclosed in quotes.
   • CThe description key is misspelled.
   • DThe interface name is a string.
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2. 12application · medium

   A network automation script receives a JSON response and needs to check if a field is intentionally empty. Which JSON value should be used to represent a field with no value?

   • A""
   • Bfalse
   • Cnull
   • D0
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4. 13application · medium

   A network engineer needs to extract the IP address of the management interface from a JSON response. The response is: {"device": {"mgmt": {"ip": "192.168.1.1", "mask": "255.255.255.0"}, "interfaces": [{"name": "G0/0", "ip": "10.0.0.1"}]}}. Which expression returns the management IP?

   • Adata["device"]["mgmt"]["mask"]
   • Bdata["mgmt"]["ip"]
   • Cdata["device"]["mgmt"]["ip"]
   • Ddata["device"]["interfaces"][0]["ip"]
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5. 14application · medium

   A network automation engineer is comparing JSON and YAML for storing device configuration templates. The templates will be read by both Python scripts and human engineers. Which characteristic is a key advantage of JSON over YAML in this scenario?

   • AJSON is more human-readable than YAML for large nested structures.
   • BJSON is natively parsed by Python's standard library without third-party modules.
   • CJSON allows unquoted keys for brevity.
   • DJSON supports comments for documentation.
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6. 15foundation · easy

   Which of the following is a common use case where JSON is often preferred over YAML?

   • AConfiguration files that require comments and human-friendly readability.
   • BStoring data in a format that supports multi-line strings without escaping.
   • CData interchange between web applications and APIs.
   • DDefining network device configurations with indentation-based structure.
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