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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 is Cursor? Cursor is a database object used by applications to manipulate data in a set on a row-by- row basis, instead of the typical SQL commands that operate on all the
Illustrate the term EDI Trading Patterns? EDI Trading Patterns are illustrated below: a. Hubs and Spokes: Several of the prime movers into the adoption of Electronic Da
Explain Formats supported in Linux for executable programs. Linux supports two formats for executable programs: a. Out-binary format b. ELF - dynamic libraries
What are SPA/GPA parameters (SAP memory) SPA/GPA parameters are field values saved globally in memory. There are two ways to use SPA/GPA parmeters: By setting field attrib
Give the difference between multiprogramming and multiprocessing. A multiprocessing system is a computer hardware configuration which contains more than one independent proc
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Explain the DAA DAA instruction follows the ADC or ADD instruction to adjust the result into a BCD result. DAA instruction functions only with the AL register, this addition sh
What is sector sparing? Low-level formatting also sets aside spare sectors not visible to the operating system. The controller can be told to change each bad sector logically w
Explain the term Electronic Data Interchange (EDI). Electronic Data Interchange (EDI) may be generally easy to understand as the replacement of paper-based purchase orders alon
Explain Bottom up parsing. Bottom up parsing: This parse attempts to increase syntax tree for an input string by a sequence of reduction. If the input string can be decreas
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