Apr 28, 2020 · Tue 28 Apr 2020 09.22 EDT Last modified on Wed 1 Jul 2020 12.35 EDT. Share on Facebook; according to the mask maker 3M. A Covid-19 particle is smaller than 0.1 micron,

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A wildcard mask is a mask of bits that indicates which parts of an IP address are available for examination. In the Cisco IOS, they are used in several places, for example: . To indicate the size of a network or subnet for some routing protocols, such as OSPF.

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