If the functional dependency X ? Y is a key constraint, what are X and Y?
What will be an ideal response?
X is the key and Y is the set of all attributes.
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Explain the difference between Priority 1, Priority 2 and Priority 3 checkpoints in the Web Accessibility Initiative.
What will be an ideal response?
What does the code in line 8 produce?
``` 1 string s, t; 2 s = “Get up and go to school!”; 3 t = “NO!”; 4 int n = s.size(); 5 int w = s.at(3); 6 int x = s.at(12); 7 s += t; 8 cout << s; ``` A. “Get up and go to school!” B. “NO!” C. “Get up and go to school!NO!” D. Nothing. That isn’t how you display strings.
Which command executes the Java class file Welcome.class?
a. java welcome b. java Welcome.class c. java Welcome d. run Welcome.class
File systems can be mounted with the ____ command.
A. mount B. fsck C. fdisk D. mkfs