A port scanner is a tool useful to an attacker to identify possible vulnerabilities in a potential victim’s system. Cite a situation in which someone who is not an attacker could use a port scanner for a nonmalicious purpose.
What will be an ideal response?
Testing for known vulnerabilities an attacker might exploit.
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The exception facility should be used when
a) Some resource is unavailable to the compiler b) A program encounters an error and cannot recover, but needs to shut down gracefully, perhaps saving work.. c) A program requests a resource that is not available. d) Array index value is out-of-bounds e) A programmer calls the wrong function f) A division by zero occurs g) There is a compiler detected error h) A call to operator new fails to allocate memory from free store i) An arithmetic error occurs
How is a queue more efficient than a linked list data structure?
a. The queue data structure operations are all at the head and tail of the list. b. A queue is more efficient than a linked list because it does not have duplicate elements. c. A queue is more efficient because it uses a single linked list. d. A queue sorts the elements so they can be easily found.