What item is at the front of the list after these statements are executed?
dequeinterface waitingline= new linkeddeque< > ();
waitingline. addtofront("jack");
waitingline. addtofront("rudy");
waitingline. addtoback("larry");
waitingline. addtoback("sam");
string name =waitingline. getfront();
a. sam b. larry. c. rudy. d. jack

C.Rudy.

Explanation:

We are using Deque interface which is sub type of  Queue interface. Deque supports insertion and deletion from both ends front and end.So it can be used as a queue and stack also.

In this question we have inserted Jack at the front first.Then Rudy at the front now we have Rudy at the front and all other elements are added to back.So Rudy is at the front.

answer; thats a symptom of hallucinogens,drug abuse;

system programmer option d is correct

because an operating system is software that manages computer hardware and system resources.