Which of the following network component interfaces with a Telco T1 line at the demarcation point?

Which of the following enables the attacker to attack and debug web applications?

a. Cookies b. URL obfuscation c. Cross-site scripting d. Web proxies

Consider a class that uses the following variables to implement an array-based stack:

``` String [] s = new String[100]; int top = 0; ``` A) if (top == 0) throw new RuntimeException("Underflow"); top--; String temp = s[top]; s[top] = null; return temp; B) if (top == 0) throw new RuntimeException("Underflow"); String temp = s[top]; top--; s[top] = null; return temp; C) if (top == 0) throw new RuntimeException("Underflow"); return s[top-1]; top--; s[top] = null; D) top--; return s[top];