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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.
Write a short note on MMX technology. MMX (Multimedia extensions) technology adds 57 new instructions to instruction set of the Pentium - 4 microprocessors. MMX technology also
What is a resource-allocation graph? Deadlocks can be described more precisely in terms of a directed graph known as a system resource allocation graph. This graph having of a
Design a easy (text-based/ graphical) UI for your program. The user should be encouraged for parameter values for the particular protocol simulation. For example, the user sho
What are the entities that are swapped out of the main memory while swapping the process out of the main memory? All memory space occupied by the process, process's u-area, and
How can system improved if one arrive at the probability of availability of free lines during the busy hour? Improvement can be made when the system is act as a loss system in
Explain clearly the four stages in the Rapid Application Development
Dataflow Computing A different to the von Neumann model of computation is the dataflow computation model. In a dataflow model, control is fixed to the flow of data. The order o
What will occur when contents of register are shifter left, right? This is well known that into left shift all bits will be shifted left and LSB will be appended along with 0 a
What is ROM? Ans: ROM: It is called Read Only Memory, is a Permanent or Semi-permanent Memory. The data is permanently stored and cannot be changed, in Permanent ROM. Th
Define exception. The term exception is used to transfer to any event that causes an interruption
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