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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 are assembler directives? Ans: These are the instructions that direct the program to be executed. They have no binary corresponding so they are called pseudo-opcodes. The
Explain the statement- CRT screen as a two-dimensional matrix One can imagine the CRT screen as a two-dimensional matrix which has m rows and n columns and this is usually ref
consider the 8 bit floating point format including support for normalised nimbers and nonnumeric values.it included 3 bits for mantissa and 4 bitys for excess 7 exponent
What is difference between hold time and setup? The interviewer was looking for one exact reason, and it’s really a good answer as well..The hint is hold time doesn't depend onto c
Q. Concurrently read exclusively write? It's one of the models based on PRAM. In this model, processors access the memory location simultaneously for reading whereas exclusivel
what is waterfall model
Update -task updates are Asynchronous updates.
What is a Multiplexer Tree? Ans Multiplexer Tree: The largest available MUX IC is 16 to 1. Meeting the larger input requires there must be a provision to expand this. It
Q. Explain Arithmetic Data Processing Instructions? These instructions carry outlogical and arithmetic operations on data. Arithmetic: The four fundamental operations are
Static and Dynamic Interconnection Network In a static network the connection among input and output nodes is permanent and cannot be changed. Static interconnection network ca
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