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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.
Find a 3NF decomposition of the following relation scheme: University (Faculty, Dean, Department, Chair, Professor, Rank, Student}. The University relation satisfies the following
W To date we have discussed elementary high level language programming and low level assembler programming, one of the benefits of C is the integration of both , this requires a re
Q. Illustrate the Cache Memory Operation? It comprises a copy of a part of main memory contents. When a program is running and CPU tries to read a word of memory (instruction o
Q Write a menu driven program to perform subtraction in base 5 using r and (r-1) complement with necessary validations.
What is non-repudiation? Non Repudiation: Assurance that the sender is given with proof of delivery and that the recipient is provided with proof of the sender's identity so th
a. What is the difference among character and block devices? b. Discuss the method to make a Kernel Driver for the PC Speaker. c. Explain the socket structure with the help o
Explain LRU Page replacement algorithm. LRU policy: It expands to least recently use. This policy proposes that we remove a page that last usage is farthest from present time
Random Search - artificial intelligence: Some problems to be solved by a search agent are more creative in nature, for example, like in writing poetry. In this case, it is oft
Intelligent Retrieval from Database: Database system are large bodies of facts about some subjects, which are used to answer users queries about that subject. The design of d
what is relationship among objects in software engineering??
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