Write a statement that would read all information up to the comma in the record below, from stream ins into a string variable called courseName.

Which of the following statements is true about MPLS:

a. MPLS can be used to transport voice and data, and its traffic should be protected with encryption. b. MPLS can be used to transport voice and data, and its traffic does not need to be protected with encryption. c. MPLS is used for data only, and its traffic should be protected with encryption. d. MPLS is used for voice only, and its traffic should be protected with encryption.

Consider the ER diagram of Figure 7.20, which shows a simplified schema for an airline reservations system. Extract from the ER diagram the requirements and constraints that resulted in this schema. Try to be as precise as possible in your requirements and constraints specification.

What will be an ideal response?