Which statement is TRUE regarding refactoring?
A. Refactoring improves test coverage
B. During refactoring, you should never have a failing test
C. Improving code structure is a primary goal
D. Refactoring always reduces the amount of code
查看答案
RottenPotatoes' target uptime is 99.9%. Yesterday there was a one hour outage. Which statement is true:
A. Because of the outage, RottenPotatoes has no hope of meeting its uptime goal this year
B. RottenPotatoes can still meet its uptime goal if there are no further outages this year
C. If no users actually tried to get to the site during the outage, uptime wasn’t hurt
D. There isn’t enough information to determine whether RottenPotatoes can meet its user-perceived uptime goal
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
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
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
微信支付 
支付宝支付