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8. Consider the class-less IP network 130.45.130.0/21 a. How many bits are in the net id?...

8. Consider the class-less IP network 130.45.130.0/21

a. How many bits are in the net id? ________________

b. How many bits are in the host id? _________________

c. How many possible hosts are there? __________________

d. What is the mask in binary and dotted decimal? __________________________ and _______________________________ e. What is the broadcast IP address for this network? ____________________________

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Answer #1 
a. How many bits are in the net id?
32

b. How many bits are in the host id?
32

c. How many possible hosts are there?
2046

d. What is the mask in binary and dotted decimal?
 11111111.11111111.11111000.00000000
e. What is the broadcast IP address for this network?
130.45.135.255


==================================
Address:   130.45.130.0          10000010.00101101.10000010.00000000
Netmask:   255.255.248.0 = 21    11111111.11111111.11111000.00000000
Wildcard:  0.0.7.255             00000000.00000000.00000111.11111111
=>
Network:   130.45.128.0/21       10000010.00101101.10000000.00000000 (Class B)
Broadcast: 130.45.135.255        10000010.00101101.10000111.11111111
HostMin:   130.45.128.1          10000010.00101101.10000000.00000001
HostMax:   130.45.135.254        10000010.00101101.10000111.11111110
Hosts/Net: 2046

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