Subnets Flashcards by Sharri Brascher

Q

Magic number

A

256

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Q

Subnet mask endings

A

128, 192, 224, 240, 248, 252, 254, 255

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Q

The broadcast address…

A

… is one number less than the next subnet address.

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Q

The first usable IP address is…

A

… one higher than the subnet address.

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Q

The last usable IP address is…

A

… one number less than the broadcast address.

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Q

Class A Subnet

A

255.0.0.0 - 255.254.0.0

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Q

Class B Subnet

A

255.255.0.0 - 255.255.254.0

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Q

Class C Subnet

A

255.255.255.0 - 255.255.255.252

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Q

Default Class A Subnet

A

CIDR /8
Mask 255.0.0.0

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Q

Default Class B Subnet

A

CIDR /16, Mask 255.255.0.0

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Q

Default Class C Subnet

A

CIDR /24, Mask 255.255.255.0

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