Explain how access to the call stack is useful in debugging. ?
What will be an ideal response?
The call stack is the ordered list maintained by a JavaScript processor containing all the procedures, such as functions, methods, or event handlers, that have been called but have not yet finished processing. Each time a program calls a procedure, the procedure is added to the top of the call stack, and then removed after it finishes executing.The ability to view a list showing the contents of the call stack is very useful when tracing logic errors in large programs with multiple functions. For example, suppose that you havea variable that is passed as an argument among several functions. Suppose also that the variable is being assigned the wrong value. Viewing the call stack, along with using tracing commands, makes it easier to locate the specific function causing the problem.?
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Which of the following are true of the Model-View-Controller pattern?
a) This pattern is useful in designing a GUI (graphical user interface). b) This pattern is useful only in designing end-user computer applications. It is of little value otherwise. c) This pattern presents a way to separate (at least logically) I/O from the process part of the application. d) In this pattern, the Controller is the input portion of the task. e) In this pattern, the View is the input portion of the task. f) In this pattern, the Controller accepts data and commands from the user, it sends the to the Model. The Model processes commands, operates on the data, and changes the state of the program, notifies the View. The View presents the state of the program.
Which vim command replaces a single character and returns to command mode automatically?
A. r B. R C. s D. S
Which of the following IPSec modes encrypts both the header and the data in each packet?
a. Transport b. Tunnel c. Network d. All the above
Ethernet speed is measured as mbps, which stands for ____________________.
What will be an ideal response?