**From which IP Class, subnet mask 255.255.255.0 belongs to?**

(a). Class A
(b). Class B
(c ). Class C
(d). May be from (a), (b), (c ).

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(d).
Explanation: Well, 255.255.255.0 is default subnet mask for Class C IPs but it can also belongs to Class A and Class B IPs after subnetting.

the correct answer is C option

255.255.255.0 is /24 Network bits.
By default its for Class C, However it can be used with any class if we have divided our networks.

For Example:
Class A ip 10.1.1.0/24 can also use this subnet mask.
Class B ip 172.16.1.0 /24 can also use this subnet mask.

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