All DNS servers fall into one of four categories: Recursive resolvers, root nameservers, TLD nameservers, and authoritative nameservers. Recursive resolver / DNS resolver First stop in a DNS query It […]
Forward proxy, Reverse proxy
Forward and reverse proxies secure and isolate resources that reside on a private network, but they play different roles in modern enterprise architectures. Forward Proxy: A forward proxy provides proxy […]
Binary Search
Background: sorted array arr[] of n elements, search a given element x in arr[] and return the index of x in the array. int mid = (low + high)/2; => maximum positive int value(231 – 1 )int mid = low […]