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How optimization is achieved in DNS?
Two primary optimizations used in DNS and they are: replication and caching. All root servers is replicated; various copies of the server exist around the world. While a new site joins the internet, the site configures its local DNS server along with a list of root server. The site server uses any root server is most responsive at a provided point of time. Into DNS caching each server maintains a cache of names. When this looks up a new name, the server puts a copy of the binding in its cache. Before contacting other server to request a binding, the server checks its cache; when the cache have the answer the server uses the cached answer to produce a reply.
Explain Asymmetric cryptographyand its components. Asymmetric or public-key cryptography be different from conventional cryptography in which key material is bound to a single
Consider the following pseudo-code segment. 1. input y {y is a three-digit hexadecimal number} 2. d ← 0 3. for i = 1 to 3 3.1. char ← i th character from y readin
Discuss the main tags of WML. Tag Definition of Wireless Markup Language: This defines the starting and the ending of the page, as . this explains
The maximum number of nodes in a binary tree of depth 5 is 31 is the maximum number of nodes in a binary tree
Artificial Intelligence 1. Explain about artificial intelligence? What are the achievements of AI? 2. Elaborate state space search briefly. 3. Prove that A* is optimal.
Explain how the Web enables effective collaborative computing. Discuss the similarities and differences among WebEx, Microsoft NetMeeting and Novell Groupwise software (in less tha
What is NULL POINTER Inside main, a FILE * called file. Afterwards, the fopen function, passing it the path to data file, as well as "r", only intending to read from the file.
The hexadecimal number for (95.5) 10 is ? Ans. (95.5) 10 = (5F.8) 16 Integer part Fractional part 0.5x16=8.0
Q. Explain about Threads Model - programming model? In this model a single process can have many as well as concurrent execution paths. The main program is planned to run by na
Associative Memory Organisations The associative memory is organised in w words with b bits per word. In w x b array, every bit is known a cell. Each cell is made up of a flip-
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