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Hierarchy of DNS Servers
DNS uses a large number of server organized in hierarchical fashion and distribution around the world. No single DNS server has all of the mappings for all of the hosts in the internet. instead the mappings are distributed across the DNS servers. There are three class of DNS server root DNS servers top level domain servers and authoritative DNS servers organized in a hierarchy as show in figure.
How two adjacent layers communicate in a layered network? (or What do you mean by Service Access Point?) In layered network, each layer has lots of entities and entities of lay
Explain the working of ISDN Stands for Integrated Services Digital Network. It is a way to move more data over existing regular phone lines. ISDN is rapidly becoming availab
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Now, let us suppose a famous sequence called as bitonic sequence and sort out the elements using a combinational circuit consisting of a set of comparators. The property of bitonic
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Define the uses of Intranet Intranet can largely eliminate paper-based documents, which otherwise become outdated over passage of time. Increased communication will also lead t
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What are the data units at dissimilar layers of the TCP / IP protocol suite? The data unit formed at the application layer is called a message, at the transport layer the data
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