This is the final destination of a voice call. The final destination can be a physical device or server or maybe even a software application.

One of the forms of malicious code is a worm. Please briefly describe a worm, a mass-mailing worm, and a denial of service attack.

What will be an ideal response?

A doubly linked list makes it easy to

A) move from any node to its successor, and from any node to its predecessor B) skip two nodes at a time when moving forward through the list C) skip two nodes at a time when moving backward through the list D) to create a second copy of the linked list