Discuss noise immunity and its importance in selecting an encoding method.
What will be an ideal response?
Some channels are noisier than other channels and some data are more sensitive to noise than other data. These are the important factors to select an encoding method. Elimination or at least minimization of noise must be considered carefully in selection of an encoding method for the given data and channel.
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Which of the following is not true of a destructor?
a. It performs termination housekeeping. b. It is called before the system reclaims the object’s memory. c. If the programmer does not explicitly provide a destructor, the compiler creates an “empty” destructor. d. It releases the object’s memory.
Recursively visiting the left subtree, right subtree and then the root describes:
(a) preordering processing (b) inorder processing (c) postorder processing (d) none of the above
Which of the following should be modified because it is weak by default?
A. Default account B. NAT firewall C. Wireless encryption D. PNAC
Which option best describes the encryption technique of a Caesar cipher?
A. Substitution B. Diffusion C. Confusion D. Transportation