Explain multicast communication, including the IP address range involved, as well as the protocol that makes this possible.
What will be an ideal response?
Multicast communication involves one computer sending a packet to a group of computers that have been predefined using the IGMP protocol to determine group membership. The addresses used for multicast are Class D addresses with the network ID of 224/8.
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Which of the following is not required for counter-controlled repetition?
a) the special value -1 to mark the end of data input b) initial value of the control variable c) increment or decrement by which the control variable is modified each time through the loop d) condition that tests for the final value of the control variable.
According to the study by Whittaker in 1996, what percentage of project failures were due to bad planning and estimating?
A. 48% B. 53% C. 68% D. 87%
What is the maximum length for a field name?
A. 32 characters B. 64 characters C. 16 characters D. 20 characters
Answer the following statements true (T) or false (F)
1. Although a program can write its output to a file, no other programs can use this file as input. 2. If the programmer forgets to use the open function where needed, the compiler will generate an error message 3. If a call to the open function fails to open a file successfully, an execution-time diagnostic will be generated. 4. Once a field width has been set using the setw manipulator or the width function, it remains in effect for the remainder of the program 5. cin >> ch and cin.get (ch) handle input data in exactly the same manner.