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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.
Working of compact disk: A CD is built from 1.2 mm thick, approximately all-pure polycarbonate plastic and its weighs is approximately 15-20 grams. From the core outward compo
Unlike Ipv4, Ipv6 does not include which field in the base header? Unlike Ipv4, Ipv6 does not contain the Field for Fragmentation information into the base header.
Define static memories? Memories that consists of circuits capable of retaining their state as long as power is applied is known as static memories
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A data structure in which an element is added and detached only from one end, is known as Stack
Define about classes of object oriented modelling A class is a collection of things, or concepts that have the same properties. Each of these concepts or things is known an obj
Computer Concepts & C Programming 1. Write a program to read four floating point numbers and find their sum and average. 2. What is the difference between string constants a
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Write the values of the C output for the following gates: For a(n) ________ gate, the output is zero if any of the inputs are equal to one. For a(n) ________ gate ,the
Question: a) Describe what is meant by a "bus". There are two types of bus, dedicated and multiplexed. Give a brief description of both types of buses. b) Briefly explain f
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