how is communication between computers
How is communication between computers established in Internet. What characteristics need to be defined in a communication protocol? Explain the physical and logical paths in a computer communication network also.
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suppose your process starts up and allocates some memory with malloc the allocator will then give part of a memory page to your process the os then
reflects organisational structuremany organizations are distributed over various locations if an organisation has many offices in dissimilar cities
as we have discussed page tables map virtual page addresses to physical page addresses one of the advantages of using virtual addresses is that we
improved reliabilityin a centralised dbms a server failure stops the operations of the dbms though a failure at single site of a ddbms or a failure
how is communication between computers established in internet what characteristics need to be defined in a communication protocol explain the
improved availabilitythe data in a distributed system may be replicated so that it is at more than one site thus the failure of a node or a
processes have valid and invalid entries on their page tables the valid entries all point to some where real eg a physical page or some portion of
improved performanceas the data is located near the site of its demand and given the inherent parallelism because of multiple copies speed of
speedup query processinga query that includes data at various sites can be split into sub-queries these sub- queries can be implemented in parallel
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