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The ability to perform a background request and update the HTML page in-place with the response relies on:(i) JavaScript(ii) The browser making the DOM available to JavaScript(iii) JSON(iv) XML(v) XmlHttpRequest

A. i and ii
B. iii and v
C. i, ii, and iii
D. i, ii, and v
E. i, iv, and v

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Which Ruby language features support the DRYness enabled by validations and filters: (a) higher-order functions, (b) closures, (c) metaprogramming

A. Only (a)
B. Only (a) and (b)
C. Only (a) and (c)
D. (a), (b) and (c)

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Which statement is false regarding Cartesian products as a way of representing relationships?

A. You can represent one-to-one relationships as well as one-to-many relationships
B. You can represent many-to-many relationships
C. The size of the full Cartesian product is independent of the join criteria
D. You can only filter based on on primary or foreign key (id) columns

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Which is true about third-party authentication between a requester and a provider?

A. Once completed, the requester can do anything you can do on the provider
B. If your credentials on the requester are compromised, your credentials on the provider are also compromised
C. If the provider revokes access, the requester no longer has any of your info
D. Access can be time-limited to expire on a pre-set date

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Which of the following is/are true regarding JavaScript's prototype inheritance?(i) It can be used to mimic class inheritance(ii) If a property of an object does not exist, this property is checked for up the prototype chain(iii) Every object inherits from exactly one prototype object, including Object (the empty object)(iv) The keyword null is returned when we reach the top of the prototype chain and the property has not been found

A. i and ii
B. ii and iii
C. i, ii, and iv
D. i, ii, iii, and iv

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The ability to perform a background request and update the HTML page in-place with the response relies on:(i) JavaScript(ii) The browser making the DOM available to JavaScript(iii) JSON(iv) XML(v) XmlHttpRequest

A. i and ii B. iii and v C. i, ii, and iii D. i, ii, and v E. i, iv, and v

Which Ruby language features support the DRYness enabled by validations and filters: (a) higher-order functions, (b) closures, (c) metaprogramming

Which statement is false regarding Cartesian products as a way of representing relationships?

Which is true about third-party authentication between a requester and a provider?

A. i and ii
B. iii and v
C. i, ii, and iii
D. i, ii, and v
E. i, iv, and v