What multicast protocol is used between clients and routers to let routers know which of their interfaces are connected to a multicast receiver?
a. IGMP
b. PIM-DM
c. PIM-SM
d. SPT switchover
Answer: a. IGMP
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Select all that apply. Which of the following steps is normally performed by a for loop?
a. update the control variable during each iteration b. test the control variable by comparing it to a maximum or minimum value c. terminate when the control variable reaches its maximum or minimum value d. initialize the control variable to a starting value
How many private members does an object of class D have?
Consider the class inheritance. ``` class B { public: B(); B(int nn); void f(); void g(); private: int n; }; class D: public B { public: D(int nn, float dd); void h(); private: double d; }; ``` a) 0 b) 1 c) 2 d) 3 e) 4 f) 5
____ variables and constants are those that are known to the entire program.
A. Global B. Local C. Universal D. Portable
The altitude and base of a right triangle are in the proportion 3:4. If the base is 20 feet, what is the altitude?
Let x = the altitude in feet. 3 / 4 = x / 20 60 = 4x x = 15 feet