Given the following JSON object, how many object keys found in the sample below?

{
“response”: {
“id”: “3”,
“name”: “Cisco Catalyst”,
“ipAddress”: {
“private”: “192.168.1.1”,
“public” : “156.157.1.1”
}
}
}

(A) 3
(B) 4
(C) 5
(D) 6

6 is the correct answer.

JSON defines variables as key:value pairs, with the key on the left of the colon (:) and always enclosed in double quotation marks, with the value on the right.