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Zorluk: OrtaInterpreting JSON Encoded Data

A network administrator issues a RESTCONF HTTP GET request to retrieve OSPF interface parameters from a Cisco IOS XE router. The API returns the following JSON payload:

{
"Cisco-IOS-XE-ospf:ospf": {
"process": [
{
"id": 1,
"area": [
{
"area-id": 0,
"interface": [
{
"name": "GigabitEthernet1",
"cost": 10,
"passive": false
},
{
"name": "GigabitEthernet2",
"cost": 100,
"passive": true
}
]
}
]
}
]
}
}

Based on the JSON payload provided, which two statements correctly interpret the structural data and values? (Select two.)

  1. The key "process" maps to a JSON array containing objects that represent OSPF process configurations.Cevap
  2. The data path Cisco-IOS-XE-ospf:ospf -> process[0] -> area[0] -> interface[1] -> passive evaluates to the boolean value true.Cevap
  3. C
    The value associated with the "cost" key under interface[0] is formatted as a string data type.
  4. D
    The element at array index 0 in the interface list corresponds to interface GigabitEthernet2.

Cevap

The statement identifying that the key 'process' maps to a JSON array of process objects, and the statement evaluating the path to interface[1] -> passive as the boolean literal true are both correct.
The key 'process' uses square brackets `[]` which denotes a JSON array containing configuration objects. The path leading to `interface[1]` correctly targets the second interface object (`GigabitEthernet2`) due to 0-based array indexing, where the `passive` field holds the unquoted boolean value `true`.

Adım Adım Çözüm

1
Analyze JSON structural symbols for the key 'process'
The value following "process": is enclosed in square brackets `[...]`, indicating a JSON array.
Square brackets define an ordered list/array of values or objects in JSON syntax.
2
Evaluate array indexing for the 'interface' element list
Index 0 points to GigabitEthernet1 (first element) and Index 1 points to GigabitEthernet2 (second element).
JSON arrays use 0-based indexing where array[0] represents the first element.
3
Inspect data types for 'cost' and 'passive'
The cost value 10 is numeric (no double quotes), while passive values `false` and `true` are unquoted booleans.
JSON string data types require surrounding double quotes, whereas numbers and booleans are written without quotes.

Anahtar Kavram

JSON Structure and Data Types (Arrays vs. Objects, 0-based Indexing, and Value Types)
Tahmini Süre:1m 30s
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Konular

Interpreting JSON Encoded Data

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