300-435: Automating and Programming Cisco Enterprise Solutions

The exhibited JSON has "data" as the top-level key, whose value is a list; the first item in that list (index 0) is a dictionary containing the key "host-name". To retrieve this value in Python, you must use square-bracket indexing with the keys given as quoted strings, in the correct nested order: d["data"][0]["host-name"]. This matches standard Python dictionary/list access syntax, where dictionary keys must be quoted strings and list elements are accessed by integer index using square brackets. Omitting quotes around keys, using parentheses instead of brackets, or reversing the key order/using curly braces all produce invalid or incorrect Python syntax for this data structure.