Binary Lesson 5.5 Usable Addresses Class A, B, and C.

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Presentation transcript:

Binary Lesson 5.5 Usable Addresses Class A, B, and C

Slash Notation Consider a class A address of Consider a class A address of The network portion is the first octet The network portion is the first octet 1 This situation can be written This situation can be written / /8 The number after the / is the number of bits in the network portion The number after the / is the number of bits in the network portion

Subnet Mask Consider a class A address of /8 in binary Consider a class A address of /8 in binary The subnet mask is The subnet mask is The network address is The network address is In Binary: In Binary: IP: Subnt Msk: Net Addr:

Network Address To find the network address, take a node's IP address and set all the host bits to 0 To find the network address, take a node's IP address and set all the host bits to 0 IP: Subnt Msk: NNNNNNNN HHHHHHHH HHHHHHHH HHHHHHHH NNNNNNNN HHHHHHHH HHHHHHHH HHHHHHHH Net Addr: In decimal: In decimal: IP: Subnt Msk: Net Addr:

Broadcast Address To find the broadcast address, take a node's IP address and set all the host bits to 1 To find the broadcast address, take a node's IP address and set all the host bits to 1 IP: Subnt Msk: NNNNNNNN HHHHHHHH HHHHHHHH HHHHHHHH NNNNNNNN HHHHHHHH HHHHHHHH HHHHHHHH Brdc Addr: In decimal: In decimal: IP: Subnt Msk: Brdc Addr:

Usable Addresses All the other addresses are usable--starting at network address + 1 and ending at broadcast address -1 All the other addresses are usable--starting at network address + 1 and ending at broadcast address -1 Network Addr: Subnet Mask: Broadcast Addr: First Usable Addr: Last Usable Addr:

Class B Class B address: /16 Class B address: /16 The subnet mask is The subnet mask is The network address is The network address is The broadcast address is The broadcast address is In Binary: In Binary: IP: Subnt Msk: Net Addr: Brdc Addr:

Class B Usable Addresses Class B address: /16 Class B address: /16 The subnet mask is The subnet mask is The network address is The network address is The broadcast address is The broadcast address is First usable address: First usable address: Last usable address: Last usable address:

Class C Class C address: /24 Class C address: /24 The subnet mask is The subnet mask is The network address is The network address is The broadcast address is The broadcast address is In Binary: In Binary: IP: Subnt Msk: Net Addr: Brdc Addr:

Usable Addresses Class A, B, and C iClicker Questions

What is the network address in this network? /8 A B C D E of 9

What is the broadcast address in this network? /8 A B C D E.Something else 2 of 9

What is the first usable address for this network? /8 A B C D E.Something else 3 of 9

What is the last usable address for this network? /8 A B C D E.Something else 4 of 9

What is the first usable address for this network? /24 A B C D E.Something else 5 of 9

What is the last usable address for this network? /24 A B C D E.Something else 6 of 9

What is the last usable address for this network? /16 A B C D E.Something else 7 of 9

What is the broadcast address for this network? /16 A B C D E.Something else 8 of 9

What is the network address for this network? /24 A B C D E.Something else 9 of 9