A network technician visits a site that needs voice connectivity to the corporate office and installs four IP phones. The phone exchange resides at the telephone company. Which of the following technologies is being used?
A. Virtual switch
B. Virtual server
C. Virtual desktop
D. Virtual PBX
Answer: D. Virtual PBX
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Answer the following statements true (T) or false (F)
1) The stack is the region of memory used for data structures dynamically allocated and deallocated by operators new and delete.
2) The heap is the region of memory used for allocation of function data areas.
3) When an array name with no subscript appears in the argument list of a function call, what is actually stored in
the function's corresponding formal parameter is the value of the initial array element.
4) When the const qualifier is included in the declaration of an array parameter of a function, the compiler can
mark as an error any attempt to change the array's elements within the function.
5) The C++ string library is made available by use of the directive #include
Enter the lucky1.html text into a new Web page, then load the page in the browser to verify that it behaves as described.
Most lotteries select winning numbers by drawing numbered balls out of bins. For example, a typical Pick-4 lottery will utilize four bins, each containing balls with numbers starting at 0. If there are 10 balls to choose from in each of four bins, labeled 0 to 9, then 104 = 10,000 different number sequences can potentially be picked. Increasing the number of balls significantly increases the number of possible sequences, which significantly decreases a person’s odds of winning. For example, if there are 20 balls to choose from in each bin, labeled from 0 to 19, then 204 = 160,000 different number sequences could be selected. Make a copy of the lucky1.html page from Figure 7.2 and name it pick4.html. Then modify this new page so that it simulates a Pick-4 lottery. Your page should have one text box, where the user can enter the highest ball number (it is assumed that the lowest ball number is always 0). When a button is clicked, four random ball numbers should be selected and displayed in a message such as the following: The Pick-4 winners are: 5-0-8-2
Which of the following is the correct sequence for the instruction cycle?
A) Execute, fetch, and update B) Fetch, execute, and update C) Execute, update, and fetch D) Update, fetch, and execute
List the four criteria that need to be considered when finding the maximum output signal to quantization noise ratio (SQNR) for a Delta Modulator.
What will be an ideal response?