An IP address in the form 197.169.100.1 is called a(n) ________.

Which of the following are a good reason for using an array-based implementation of a bag?

a. An array is not fixed size b. You must traverse n entries to get to the nth item in the array c. Requires less memory than a link-based implementation d. Good choice for a large bag

State the difference between the following:

a. Union and Intersection b. product and join c. selection and projection