Q.1
JSON strings have used in___.
  • Double quote
  • Single quote
  • Both 1 & 2
  • None of These
Q.2
What is the common usage of Json on modern websites?
  • To store information remotely
  • To store information locally
  • All of the Above
  • To send and receive bits of data
Q.3
Quale funzione in PHP si usa per convertire i dati in un formato JSON ?
  • php_encode
  • php_string_to_json
  • php_decode
  • json_codify
Q.4
Which of the following JSON feature ensures communication between two applications designed in different programming languages?
  • Extensibility
  • Scalability
  • Interoperability
  • Reusability
Q.5
Which of the following Protocol services uses JSON?
  • SMTP
  • HTTP
  • TCP/IP
  • Web Protocol
Q.6
Which of the following code will throw an error?
  • JSON.parse(‘{}’);
  • JSON.parse(null);
  • JSON.parse(undefined);
  • JSON.parse(‘[]’);
Q.7
Is JSON Case sensitive ?
  • Yes
  • No
Q.8
What are two main structures compose JSON?
  • Arrays and Objects
  • Keys and values
  • Class and Objects
  • None of above
Q.9
Which of the following is not a type in JSON?
  • date
  • Object
  • Array
  • string
Q.10
SELECT nameFROM instructorWHERE salary IS NOT NULL;Selects
  • a) Tuples with null value
  • b) Tuples with no null values
  • c) Tuples with any salary
  • d) All of the mentioned
  • b) Tuples with no null values
Q.11
A _____ indicates an absent value that may exist but be unknown or that may not exist at all.
  • a) Empty tuple
  • b) New value
  • c) Null value
  • d) Old value
Q.12
Which is the file extension of JSON?
  • .js
  • .json
  • .java
Q.13
Which of the following is the fastest JavaScript parser?
  • Acron
  • JSLint
  • Esprima
  • Traceur
Q.14
Can you use a double quote inside a JSON string?
  • Yes, if you use the ascii code.
  • Yes, you can use it without any special treatment
  • Yes, if it is escaped like ( \” )
  • No, you should use single quotes
Q.15
In modern websites what is the common usage for JSON?
  • To store information remotely.
  • To send and receive bits of data.
  • To store information locally.
Q.16
Which of these is proper a JSON array?
  • { “letters” : [ “a”, “b”, “c”; ] }
  • { ‘letters’ : {“a”, “b”, “c” } }
  • { “letters” : [ a, b, c ] }
  • { “letters” : [ “a”, “b”, “c” ] }
Q.17
Is whitespace matter in JSON?
  • No, it will be stripped out.
  • Yes, both inside and outside of strings
  • Yes, only within strings
  • Yes, only outside of strings
Q.18
Which of these is supported as a JSON Value type?
  • Infiniti
  • Null
  • Undefined
  • NaN
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