Subnet mask refers to a numerical that acts as the identifier to separate your network ID from your host ID. These allow network components to locate and communicate properly. They are a critical networking topic for those who are targeting their CCNA exam. That is one reason many decide to enroll in the networking certification course from FITA Academy (https://www.fita.in/) as it involves comprehensive subnetting and configuration training and a realistic practical lab setup to assist.
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