What would be displayed after line 6 runs?
```
1 vector
2 vNums.push_back(10);
3 vNums.push_back(5);
4 vNums.push_back(15);
5 vNums.push_back(25);
6 cout << vNums.size();
7 vNums.pop_back();
8 cout << vNums.at(2);
9 vNums.pop_back();
10 vNums.pop_back();
11 vNums.pop_back();```
A. 0
B. true
C. 4
D. 3
C
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A network administrator wants to implement a method of securing internal routing. Which of the following should the administrator implement?
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A meta tag where the ____ enables you to enter the amount of delay, in seconds, before the page is refreshed and choose whether to refresh the current page or open a new URL.
A. name attribute has a value of change B. name attribute has a value of refresh C. http-equiv attribute has a value of refresh D. http-equiv attribute has a value of change