题目内容

Which of the following are benefits of using design patterns?(i) Apply well-known solutions to common problems(ii) Help to develop high-level architecture of software(iii) Improve ability to reuse existing implementations(iv) Improve communication between developers by providing well-known names for software interactions

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

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When using JavaScript for client-side form validation, which is NOT true?

A. JavaScript code can inspect DOM element attributes to see what the user typed
B. JavaScript code can prevent the "Submit" button from submitting the form
C. Validations that are impractical to perform on client (for example, zip code validation) may still be done on server
D. It reduces work for the server, since the server doesnt have to repeat validations already performed by JavaScript

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Which pattern(s) help to hide the structure of a container from clients:(i) Visitor Pattern(ii) Observer Pattern(iii) Iterator Pattern(iv) Strategy Pattern

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

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Suppose we have setup the foreign key movie_id in reviews table. If we then add has_many :reviews to Movie, but forget to put belongs_to :movie in Review, what happens?

A. We can say movie.reviews, but review.movie won't work
B. We will get a database error when trying to save a Review
C. We will have no way of determining which movie a given review is associated with
D. All of the above

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A likely violation of the Single Responsibility principle:Which class?

A. Veem
B. Blurk
C. SnitVeem
D. BlortVeem
E. JitVeem
F. No Violation

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

When using JavaScript for client-side form validation, which is NOT true?

Which pattern(s) help to hide the structure of a container from clients:(i) Visitor Pattern(ii) Observer Pattern(iii) Iterator Pattern(iv) Strategy Pattern

Suppose we have setup the foreign key movie_id in reviews table. If we then add has_many :reviews to Movie, but forget to put belongs_to :movie in Review, what happens?

A likely violation of the Single Responsibility principle:Which class?

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