Which of the following is a true statement regarding the relationship between Promises and callback functions?

• A.A Promise is used to monitor the value of a variable A callback retrieves the previous value of a variable.
• B.A Promise is a returned object to which the developer can attach callbacks instead of passing callbacks to a function.
• C.A Promise is an object a developer can use to pass callbacks to functions.
• D.A Promise cannot be used in conjunction with a callback.

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Consider the following code:

What is the expected result of this script?

• A.A welcome message will appear when the page loads
• B.The word "Welcome" will be displayed in a prompt when the page loads
• C.When you click the alert a welcome message will appear
• D.When you click the welcome message a welcome alert will load

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Consider the following code:

Which of the following is true based on the above code?

• A.fever = (temp > 98.7) ? "a fever": "no fever"; is not a valid statement
• B.The checktemp function will not run because it was called upon before it was defined
• C.Entering 98.7 results in the statement. "You have no fever "
• D.The default value of 0 will be displayed when the page loads

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Derrick is building a Web form to collect user data for a retail Web site. He will be collecting the users name e-mail address phone number, physical address and credit card information. What should he do to protect his users, when collecting this data?

• A.Advise users to disable JavaScript in their browsers, to keep information secure.
• B.Use signed scripts to keep the user data secure on the server.
• C.Notify users how their data is being stored and used on the Web site.
• D.Advise users to install anti-virus software to keep their data secure.

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Which of the following will correctly declare the courseNumber variable as a siring data type?

• A.var courseNumber = JS101;
• B.var courseNumber = ''JS101'';
• C.var courseNumber = ''JS101'';
• D.var_courseNumber = JS101'';

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