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DNS spoofing
This process is generally refers to the process of responding a DNS request that was supposed to implement for another server. This can be in the case where the secondly DNs system is implemented where the DNS server request another server for mapping. Also in the case of client server dialog, when a client sends request to DNS for mapping purpose. The hacker simply insertsor can say stuff the DNS server’s answer. This results in the processing of answer by answering with the source-address field by DNS server’s IP address in the packets’. Although this is not an easy way to modify the DNS reply. The DNS use ID system in order to keep track of each every request and replies. In order to spoof the DNS’s response, the hacker needs to do ID Hacking. In order to misdirect the clients to customers, the hacker will try to impersonate the DNS reply so with the help of DNS spoofing, which gives regarding the requesting client, is misdirected. The DNS cache of the impersonated DNS can be done without touching the DNS cache.
WAN -Wide Area Network
What is the disadvantage of a star topology? One major drawbacks of star topology is that once the central hub or switch get damaged, the whole network becomes unusable.
Wide Area Network WAN Wide Area Network ( WANs) connect larger geographic areas such as London the UK or the world. In this types of networks dedicated transoceanic cab
2300 words
There are two logical addressing :- a) Datalink is physical (hardware) addressing. b) Network is logical (software) addressing.
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IGRP uses flash updates, poison reverse updates, hold down times, and divide horizon. How often does it broadcast its routing table updates? Ans) 90 seconds
In the VOIP system, let h be the total number of header bytes added to each chunk, including UDP and IP header. a) Assuming an IP datagram is emitted every 20 msec, find the tr
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