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Yogesh Khurana
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Yogesh answered this on Miscellaneous Dec 30
Please share the exact difference between subnet mask and wildcard mask? And why we using wildcard mask in routers?
Subnet mask tells the number of network bits and number of host bits in an IP. Number of ON bits = number of network bits Number of OFF bits= number of host bits   Wild Card mask is used to match the IP address So that any action can be performed on them like to drop those matched IPs. Number of OFF bits =  number of bits to be matched Number of ON bits = number of bits can be wild (any) ... (more)
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Yogesh commented on May 24
How many collision domains are present in the diagram and how?
THERE ARE PER PORT COLLISION DOMAIN IN SWITCHES.SO ON THE LEFT SIDE TWO SWITCHES HAVE TOTAL 4 PORTS. SO 4 COLLISION DOMAIN(on that part).
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Yogesh commented on May 24
How many collision domains are present in the diagram and how?
I WILL CORRECT IT . THERE ARE 9 COLLISION DOMAIN
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