What is the oldest of the TCP/IP symmetric-key algorithms?
A. Data Encryption Standard (DES)
B. Advanced Encryption Standard (AES)
C. Rivest Cipher 4(RC4)
D. public-key cryptography
Answer: A
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We can represent a data set as a collection of object nodes and a collection of attribute nodes, where there is a link between each object and each at- tribute, and where the weight of that link is the value of the object for that attribute. For sparse data, if the value is 0, the link is omitted. Bipartite clustering attempts to partition this graph into disjoint clusters, where each cluster consists of a set of object nodes and a set of attribute nodes. The objective is to maximize the weight of links between the object and attribute nodes of a cluster, while minimizing the weight of links between object and attribute links in different clusters. This type of clustering is also known as co-clustering since the objects and attributes are clustered at the same time.
(a) How is bipartite clustering (co-clustering) different from clustering the sets of objects and attributes separately? (b) Are there any cases in which these approaches yield the same clusters? (c) What are the strengths and weaknesses of co-clustering as compared to ordinary clustering?
File ____ describe(s) file characteristics such as name, type, location, and size.
A. Explorer B. names C. properties D. extensions
The smallest building block of a wireless LAN is a __________ which consists of wireless stations executing the same MAC protocol and competing for access to the same shared wireless medium.
Fill in the blank(s) with the appropriate word(s).
Hidden input elements are visible in the URL when you use the get method but are not visible in the source code of the Web page.
Answer the following statement true (T) or false (F)