Which ping command option forces the ping command to send packets without displaying statistics onscreen until after the ping has stopped?
A. -c n
B. -f
C. -q
D. -w n
Answer: C
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Let X be a node in a binary tree. Any node on the path from X to a leaf is called
A) a descendant of X B) an ancestor of X C) a relative of X D) a subordinate of X
Why is a minimum spanning tree a tree?
a. Because each vertex is connected to two other vertices b. Because it is based upon a priority queue c. Because it is a graph refactored into a tree d. Because it is a specialized height binary search tree
The operating system performs all of the following tasks except
A. translates third-generation languages into machine language B. assigns memory to applications C. authorizes user access D. schedules job processing
Which of the following statements about background images is false?
A. Background images can be used to take the place of background colors. B. You should avoid using background images if they make the text difficult to read. C. You should use a background image and a background color on the same page in order to increase contrast. D. You can choose a single image or a tiles image for the background.