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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.
What is index register? In index mode the effective address of the operand is formed by adding a constant value to the contents of a register. The register used might be either
Explain how the Web enables effective collaborative computing. Discuss the similarities and differences among WebEx, Microsoft NetMeeting and Novell Groupwise software (in less tha
Magnify a triangle with vertices A = (0,0), B = (3,3) and C = (6,4) to twice its size in such a way that A remains in its original position.
Simple instruction formats: RISC uses simple instruction formats. Usually only one or a few instruction formats are used. In these machines instruction length is fixed and alig
Q. How to Create a Rollover Image? A rollover image is an image whose display changes when pointer passes ('rolls') over it. You will use Dreamweaver's Insert Rollover Image co
which two class die class contain in computer programing.
Virtual memory: Virtual memory is a technique which realized an application program the idea that it has contiguous working memory (an address space), whereas in fact it may b
A part of an aircraft engine can be given a test before installation. The test has a 75% chance of revealing a defect if it is present, and the same chance of passing a sound part
Define miss rate? It is the number of misses' states as a fraction of attempted accesses.
Define service (within R/3)? A service is a process or group of processes that perform a exact system function and often give an application-programming interface for other pr
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