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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.
Q. What do you mean by Internet? Ans: Internet is a network of networks or collection of networks. Several networks such as WAN and LAN connected through suitable hardware an
different locking techniques
A sample rate of is required for a good quality representation of telephone conversation. A sample rate of 50 times/second /mile of distance travelled are needed fo
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What are the specifications/characteristics used by the manufacturers to describe a digital to analog converter? Explain each one briefly. Ans: D/A converter characteristics
Mutation: However it may appear that the above recombinations are a little arbitrary that especially as points defining whether crossover and inversion occur are chosen random
To add scripts into your Web pages tag is used. The tag signifies the start of the script section, whereas marks the end. An example of this is d
What is virtual memory? Virtual memory is a technique that permits the execution of processes that may not be completely in memory. It is the separation of user logical memory
Q. Demonstration of sorting problem? The term sorting implies organising elements of a provided set of elements in a specific order i.e. descending order / ascending order / al
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