Question

Given the following IP address and subnet mask, what is the network identifier? • IP Address: 18.132.219.175 . Subnet Mask: 2
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Answer #1

Question 1 :

  • A bitwise AND between the IP Address and the Subnet mask would give us the network ID.

IP Address : 18.132.219.175 (convert it into binary form)

: 00010010.10000100.11011011.10101111

Subnet Mask : 255.255.248.0 (convert it into binary form)

: 11111111.11111111.11111000.00000000

Bitwise AND of IP address and subnet mask

00010010.10000100.11011011.10101111 (IP address)

AND 11111111.11111111.11111000.00000000 (subnet mask)

______________________________________________

00010010.10000100.11011000.00000000 (network ID)

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Network ID : 00010010.10000100.11011000.00000000 (convert it into decimal)

: 18.132.216.0

Question 2:

  • A bitwise OR between the IP Address and the inverted subnet mask would give us the broadcast address.

IP Address = 18.132.219.175 (convert it into binary form)

= 00010010.10000100.11011011.10101111

Subnet Mask = 255.255.248.0

= 0.248.255.255 (inverted subnet mask) (convert it into binary form)

= 00000000.11111000.11111111.11111111

Bitwise OR of IP address and subnet mask

   00010010.10000100.11011011.10101111 (IP address)

OR    00000000.11111000.11111111.11111111​ (Subnet mask)

____________________________________________________

000010010.11111100.11111111.11111111 (broadcast address)

_____________________________________________________

Broadcast Address : 000010010.11111100.11111111.11111111 (convert it into decimal)

: 18.252.255.255

Therefore,

Network ID : 18.132.216.0 (First part)

Broadcast Address : 18.252.255.255 (Second part)

PLEASE REVIEW AND UPVOTE!!!  

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