What is the name of the technology that will soon change the landscape of modern networking by moving the control functionality of a networking device to a central managed location?
A) Multicast routing protocols
B) Virtual networks
C) Network virtualization
D) Software-defined networking (SDN)
D
Explanation: The software-defined networking (SDN) movement is currently popular and is used inside many of today's most used networks (Amazon, Google). With SDN, the control layer functionality of a routing device (routing protocols) is removed and placed on a central policy server. The physically deployed devices will then be able to concentrate on forwarding traffic.
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Figure 9.1 shows a clustering of a two-dimensional point data set with two clusters: The leftmost cluster, whose points are marked by asterisks, is some- what diffuse, while the rightmost cluster, whose points are marked by circles, is compact. To the right of the compact cluster, there is a single point (marked by an arrow) that belongs to the diffuse cluster, whose center is farther away than that of the compact cluster. Explain why this is possible with EM clustering, but not K-means clustering.
Which of the following statements is false?
a) As you add each control to the GUI, you can immediately use the Properties window to set the control’s Name property b) You can use the Document Layout window to add controls to a Grid’s rows and columns. c) The Document Outline window clearly shows the GUI’s nested structure. d) You can reorder controls by dragging them in the Document Outline window.