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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.
A mobile host (MH) is connected to a WLAN access network that uses MIP for mobility support. Consider that the RTTs between MH and HA are 0.3s while RTTs within a L2 subnet are 80
Broadcast and Multicast : Broadcast and Multicast :In the broadcast interconnection network, at one time one node transfer the data and all other nodes get that data. Broadca
Speed Up:- Speed up is the ratio of the time required to implement a given program using a definite algorithm on a machine with one processor (i.e. T (1) (where n=1)) to the ti
5. Suppose that frames are 1250 bytes long including 25 bytes of overhead. Also assume that ACK frame are 25 bytes long. Calculate the efficiency of Stop-and-Wait ARQ in a system t
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Name various types of guided and unguided transmission media. If you are connecting your office computers through a local area network which transmission media would you use? Why?
FDDI Media Access Control Unlike CSMA/CD networks such like Ethernet token-passing networks are deterministic--you are able to calculate the maximum time that will pass before
explain the appropriateness of economic and behavioral feasibility
Disadvantages of IP sec Tunnelling mode IP sec tunnelling mode has the following disadvantage a.Encryption of small packets generates a lot networks over head thu
In link-state routing network topology is filled from route calculation. Switches send link-state information about local joins. Every switch creates own routing tables. It needs
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