_____ means that the projected benefits of a proposed system outweigh the estimated costs.

The erase member function of class vector cannot:

a. Specify an element to be removed from the vector. b. Specify a value to be removed from the vector. c. Specify a range of elements to be removed from the vector. d. Be called by member function clear.

Consider an unweighted nine-node grid network, as shown in Figure 4.4. Write a program to add two LLs based on the MinAPL, MaxCC, and MaxCCD deterministic link addition strategies. Estimate the execution time of the three approaches. Also compare the APL obtained when using above mentioned LL addition techniques.