You need to pass a custom script to new Amazon Linux instances created in your Auto Scaling group. Which feature allows you to accomplish this?

A. User data
B. EC2Config service
C. IAM roles
D. AWS Config

Answer: A. User data

Computer Science & Information Technology

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Make the necessary modi?cations to the schema of the Student Registration System to re?ect the design that uses the SQL domain Semesters, as discussed at the end of Section 4.8. Express the constraint that a class can be taught only during the semesters in which the corresponding course is o?ered. For instance, if the value of the attribute SemestersOffered for the course CS305 is Both, then the corresponding classes can be taught in the spring and the fall semesters. However, if the value of that attribute is Spring then these classes can be taught only in the spring.

What will be an ideal response?

Computer Science & Information Technology

?Identify the style rule for applying a text shadow with a horizontal position of 0.2em, a vertical position of 0.1em, and a dark gray color to an h1 element.

A. ?h1 {text-shadow: #292933;} B. h1 {text-shadow: 0.2em 0.1em #292933;} C. h1 {text-shadow(h,v): 0.2em 0.1em #292933;} D. ?h1 { h:0.2em v:0.1em #292933;}

Computer Science & Information Technology