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Showing posts from August, 2020

FSMO back ground

(AD) is a directory service created by Microsoft, and it comes as a set of processes and services in most versions of Windows Server operating systems. You can imagine AD as a database or a safe location that stores all the attributes of your users such as usernames, passwords, and more. This central repository automates many tasks such as management of user data, provision of security, and inter-operations with other directories. In the initial versions of AD, there were many chances for conflicts. For example, let’s say, a  domain controller  added a new employee to the database. Since the change was made to the AD, it was reflected throughout the enterprise, and that’s fine. A few seconds later, another domain controller wanted to delete the records of employees who no longer worked in the enterprise. Accidentally, it deleted this employee from the AD as well. The conflict management system that existed then followed the “last writer wins” policy, so the change made by the second do

IP address

Description An IP address is a set of numbers that identify your computer on a network. IPV4, the traditional numbering scheme, uses four integers ranging from zero to 255 and set apart by periods. For example, "204.120.0.15" is a valid IPV4 address. A newer IPV6 scheme, designed to eventually replace IPV4, uses a larger, more complex set of numbers mixed with other characters, such as letters. Reserved Addresses Networks set aside certain combinations for housekeeping and testing, such as the extreme values, "0.0.0.0" and "255.255.255.255." Another number, "127.0.0.1" is called the "localhost;" every computer on a network refers to itself as this address. Because these numbers have special meanings, the network does not assign them to PCs; such addresses would be invalid.