You are developing an application that retrieves a stock rate from an external web service. A web
page displays a simple rotating animation to indicate whether the stock rate is increased or
decreased.
The default image, as shown in the following graphic, indicates unchanged or neutral.

The arrow must point down if the stock rate is decreased, as shown in the following graphic.

You need to ensure that the arrow points down when the stock rate decreases.
Which CSS style should you apply?

You are troubleshooting a web page that includes the following code segment.

You need to evaluate the value of the variable x.
What will be displayed in the user interface?

You develop an HTML5 chat application.
You need to provide real-time updates to the messages that users post in the chat application.
What should you do?

You are creating a rotating image of a company logo.
The logo must spin on a horizontal axis and on a vertical axis.
You need to use the least amount of development effort to meet the requirement.
What should you do?

You are developing an HTML5 web application that provides a discussion forum for users. When a
user registers to access the application, the user enters an email address.
Users can enter data that can result in cross-site scripting (XSS) attacks.
You need to ensure that email input is as secure as possible.
Which two techniques should you use? (Each correct answer presents a complete solution. Choose
two.)