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Find All Subnets, 1 Subnet Octet2
Exercise Set 1: Problems 10-14, Find All Subnets, 1 Subnet Octet2
Exercise Set 2: Problems 15-19, Find All Subnets, 1 Subnet Octet2
Exercise Set 3: Problems 20-24, Find All Subnets, 1 Subnet Octet2
Exercise Set 4: Problems 25-29, Find All Subnets, 1 Subnet Octet3
Exercise Set 5: Problems 30-34, Find All Subnets, 1 Subnet Octet3
Exercise Set 6: Problems 35-39, Find All Subnets, 1 Subnet Octet4
Exercise Set 7: Problems 40-44, Find All Subnets, 1 Subnet Octet4
Exercise Set 8: Problems 45-49, Find All Subnets, 1 Subnet Octet4
Answers: Finding All Subnets, 1 Subnet Octet6
Answers: Exercise Set 1, Finding All Subnets, 1 Subnet Octet6
Answers: Exercise Set 2, Finding All Subnets, 1 Subnet Octet8
Answers: Exercise Set 3, Finding All Subnets, 1 Subnet Octet10
Answers: Exercise Set 4, Finding All Subnets, 1 Subnet Octet12
Answers: Exercise Set 5, Finding All Subnets, 1 Subnet Octet14
Answers: Exercise Set 6, Finding All Subnets, 1 Subnet Octet16
Answers: Exercise Set 7, Finding All Subnets, 1 Subnet Octet18
Answers: Exercise Set 8, Finding All Subnets, 1 Subnet Octet20
Find All Subnets, 1 Subnet OctetExercise Set 1: Problems 10-14, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
Mask
10
10.0.0.0
255.255.0.0
11
172.21.0.0
255.255.255.0
12
172.32.0.0
255.255.255.0
13
100.0.0.0
255.255.0.0
14
172.24.0.0
255.255.255.0
Exercise Set 2: Problems 15-19, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
DDN Mask
15
15.0.0.0
255.255.0.0
16
150.10.0.0
255.255.255.0
17
175.10.0.0
255.255.255.0
18
140.18.0.0
255.255.255.0
19
19.0.0.0
255.255.0.0
Exercise Set 3: Problems 20-24, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
Mask
20
10.0.0.0
255.254.0.0
21
172.16.0.0
255.255.252.0
22
192.168.99.0
255.255.255.248
23
100.0.0.0
255.240.0.0
24
200.1.1.0
255.255.255.224
Exercise Set 4: Problems 25-29, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
DDN Mask
25
125.0.0.0
255.192.0.0
26
150.10.0.0
255.255.254.0
27
175.10.0.0
255.255.252.0
28
200.10.10.0
255.255.255.248
29
215.115.115.0
255.255.255.240
Exercise Set 5: Problems 30-34, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
DDN Mask
30
150.100.0.0
255.255.224.0
31
10.0.0.0
255.192.0.0
32
172.31.0.0
255.255.128.0
33
192.125.125.0
255.255.255.248
34
223.99.99.0
255.255.255.240
Exercise Set 6: Problems 35-39, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
DDN Mask
35
128.1.0.0
255.255.252.0
36
63.255.0.0
255.224.0.0
37
192.168.20.0
255.255.255.248
38
191.191.0.0
255.255.192.0
39
192.192.192.0
255.255.255.128
Exercise Set 7: Problems 40-44, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
DDN Masks
40
169.254.0.0
255.255.224.0
41
139.14.0.0
255.255.192.0
42
10.0.0.0
255.255.0.0
43
168.14.0.0
255.255.240.0
44
215.1.1.0
255.255.255.248
Exercise Set 8: Problems 45-49, Find All Subnets, 1 Subnet Octet
Problem Number
IP Network
DDN Masks
45
222.222.222.0
255.255.255.252
46
111.0.0.0
255.254.0.0
47
192.168.3.0
255.255.255.252
48
192.168.7.0
255.255.255.224
49
172.20.0.0
255.255.240.0
This Page Intentionally Left Mostly Blank
Answers are on the Next Page
Answers: Finding All Subnets, 1 Subnet OctetAnswers: Exercise Set 1, Finding All Subnets, 1 Subnet OctetAnswers: Exercise Set 1, Problem 10 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
0
0
Address
10
0
0
0
Magic Number(s)
1
1st Subnet (Zero Subnet)
10
0
0
0
Next Subnet
10
1
0
0
Next Subnet
10
2
0
0
Next Subnet
10
3
0
0
...
10
...
0
0
Next Subnet
10
254
0
0
Broadcast Subnet
10
255
0
0
Answers: Exercise Set 1, Problem 11 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
0
Address
172
21
0
0
Magic Number(s)
1
0
1st Subnet (Zero Subnet)
172
21
0
0
Next Subnet
172
21
1
0
Next Subnet
172
21
2
0
Next Subnet
172
21
3
0
...
172
21
...
0
Next Subnet
172
21
254
0
Broadcast Subnet
172
21
255
0
Answers: Exercise Set 1, Problem 12 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
0
Address
172
32
0
0
Magic Number(s)
1
1st Subnet (Zero Subnet)
172
32
0
0
Next Subnet
172
32
1
0
Next Subnet
172
32
2
0
Next Subnet
172
32
3
0
...
172
32
...
0
Next Subnet
172
32
254
0
Broadcast Subnet
172
32
255
0
Answers: Exercise Set 1, Problem 13 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
0
0
Address
100
0
0
0
Magic Number(s)
1
1st Subnet (Zero Subnet)
100
0
0
0
Next Subnet
100
1
0
0
Next Subnet
100
2
0
0
Next Subnet
100
3
0
0
...
100
...
0
0
Next Subnet
100
254
0
0
Broadcast Subnet
100
255
0
0
Answers: Exercise Set 1, Problem 14 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
0
Address
172
24
0
0
Magic Number(s)
1
0
1st Subnet (Zero Subnet)
172
24
0
0
Next Subnet
172
24
1
0
Next Subnet
172
24
2
0
Next Subnet
172
24
3
0
...
172
24
...
0
Next Subnet
172
24
254
0
Broadcast Subnet
172
24
255
0
Answers: Exercise Set 2, Finding All Subnets, 1 Subnet Octet
Answers: Exercise Set 2, Problem 15 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
0
0
Address
15
0
0
0
Magic Number(s)
1
1st Subnet (Zero Subnet)
15
0
0
0
Next Subnet
15
1
0
0
Next Subnet
15
2
0
0
Next Subnet
15
3
0
0
...
15
...
0
0
Next Subnet
15
254
0
0
Broadcast Subnet
15
255
0
0
Answers: Exercise Set 2, Problem 16 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
0
Address
150
10
0
0
Magic Number(s)
1
0
1st Subnet (Zero Subnet)
150
10
0
0
Next Subnet
150
10
1
0
Next Subnet
150
10
2
0
Next Subnet
150
10
3
0
...
...
0
Next Subnet
150
10
254
0
Broadcast Subnet
150
10
255
0
Answers: Exercise Set 2, Problem 17 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
0
Address
175
10
0
0
Magic Number(s)
1
0
1st Subnet (Zero Subnet)
175
10
0
0
Next Subnet
175
10
1
0
Next Subnet
175
10
2
0
Next Subnet
175
10
3
0
...
...
0
Next Subnet
175
10
254
0
Broadcast Subnet
175
10
255
0
Answers: Exercise Set 2, Problem 18 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
0
Address
140
18
0
0
Magic Number(s)
1
0
1st Subnet (Zero Subnet)
140
18
0
0
Next Subnet
140
18
1
0
Next Subnet
140
18
2
0
Next Subnet
140
18
3
0
...
...
0
Next Subnet
140
18
254
0
Broadcast Subnet
140
18
255
0
Answers: Exercise Set 2, Problem 19 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
0
0
Address
19
0
0
0
Magic Number(s)
1
1st Subnet (Zero Subnet)
19
0
0
0
Next Subnet
19
1
0
0
Next Subnet
19
2
0
0
Next Subnet
19
3
0
0
...
19
...
0
0
Next Subnet
19
254
0
0
Broadcast Subnet
19
255
0
0
Answers: Exercise Set 3, Finding All Subnets, 1 Subnet OctetAnswers: Exercise Set 3, Problem 20 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
254
0
0
Address
10
0
0
0
Magic Number(s)
2
1st Subnet (Zero Subnet)
10
0
0
0
Next Subnet
10
2
0
0
Next Subnet
10
4
0
0
Next Subnet
10
6
0
0
...
10
...
0
0
Next Subnet
10
252
0
0
Broadcast Subnet
10
254
0
0
Answers: Exercise Set 3, Problem 21 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
252
0
Address
172
16
0
0
Magic Number(s)
4
0
1st Subnet (Zero Subnet)
172
16
0
0
Next Subnet
172
16
4
0
Next Subnet
172
16
8
0
Next Subnet
172
16
12
0
...
172
16
…
0
Next Subnet
172
16
248
0
Broadcast Subnet
172
16
252
0
Answers: Exercise Set 3, Problem 22 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
248
Address
192
168
99
0
Magic Number(s)
8
1st Subnet (Zero Subnet)
192
168
99
0
Next Subnet
192
168
99
8
Next Subnet
192
168
99
16
Next Subnet
192
168
99
24
...
192
168
99
…
Next Subnet
192
168
99
240
Broadcast Subnet
192
168
99
248
Answers: Exercise Set 3, Problem 23 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
240
0
0
Address
100
0
0
0
Magic Number(s)
16
1st Subnet (Zero Subnet)
100
0
0
0
Next Subnet
100
16
0
0
Next Subnet
100
32
0
0
Next Subnet
100
48
0
0
...
100
…
0
0
Next Subnet
100
224
0
0
Broadcast Subnet
100
240
0
0
Answers: Exercise Set 3, Problem 24 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
224
Address
200
1
1
0
Magic Number(s)
32
1st Subnet (Zero Subnet)
200
1
1
0
Next Subnet
200
1
1
32
Next Subnet
200
1
1
64
Next Subnet
200
1
1
96
...
…
Next Subnet
200
1
1
192
Broadcast Subnet
200
1
1
224
Answers: Exercise Set 4, Finding All Subnets, 1 Subnet Octet
Answers: Exercise Set 4, Problem 25 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
192
0
0
Address
125
0
0
0
Magic Number(s)
64
1st Subnet (Zero Subnet)
125
0
0
0
Next Subnet
125
64
0
0
Next Subnet
125
128
0
0
Broadcast Subnet
125
192
0
0
Answers: Exercise Set 4, Problem 26 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
254
0
Address
150
10
0
0
Magic Number(s)
2
1st Subnet (Zero Subnet)
150
10
0
0
Next Subnet
150
10
2
0
Next Subnet
150
10
4
0
Next Subnet
150
10
6
0
...
…
Next Subnet
150
10
252
0
Broadcast Subnet
150
10
254
0
Answers: Exercise Set 4, Problem 27 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
252
0
Address
175
10
0
0
Magic Number(s)
4
1st Subnet (Zero Subnet)
175
10
0
0
Next Subnet
175
10
4
0
Next Subnet
175
10
8
0
Next Subnet
175
10
12
0
...
…
Next Subnet
175
10
248
0
Broadcast Subnet
175
10
252
0
Answers: Exercise Set 4, Problem 28 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
248
Address
200
10
10
0
Magic Number(s)
8
1st Subnet (Zero Subnet)
200
10
10
0
Next Subnet
200
10
10
8
Next Subnet
200
10
10
16
Next Subnet
200
10
10
24
...
…
Next Subnet
200
10
10
240
Broadcast Subnet
200
10
10
248
Answers: Exercise Set 4, Problem 29 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
240
Address
215
115
115
0
Magic Number(s)
16
1st Subnet (Zero Subnet)
215
115
115
0
Next Subnet
215
115
115
16
Next Subnet
215
115
115
32
Next Subnet
215
115
115
48
...
…
Next Subnet
215
115
115
224
Broadcast Subnet
215
115
115
240
Answers: Exercise Set 5, Finding All Subnets, 1 Subnet OctetAnswers: Exercise Set 5, Problem 30 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
224
0
Address
150
100
0
0
Magic Number(s)
32
1st Subnet (Zero Subnet)
150
100
0
0
Next Subnet
150
100
32
0
Next Subnet
150
100
64
0
Next Subnet
150
100
96
0
...
…
Next Subnet
150
100
192
0
Broadcast Subnet
150
100
224
0
Answers: Exercise Set 5, Problem 31 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
192
0
0
Address
10
0
0
0
Magic Number(s)
64
1st Subnet (Zero Subnet)
10
0
0
0
Next Subnet
10
64
0
0
Next Subnet
10
128
0
0
Broadcast Subnet
10
192
0
0
Answers: Exercise Set 5, Problem 32 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
128
0
Address
172
31
0
0
Magic Number(s)
128
1st Subnet (Zero Subnet)
172
31
0
0
Broadcast Subnet
172
31
128
0
Answers: Exercise Set 5, Problem 33 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
248
Address
192
125
125
0
Magic Number(s)
8
1st Subnet (Zero Subnet)
192
125
125
0
Next Subnet
192
125
125
8
Next Subnet
192
125
125
16
Next Subnet
192
125
125
24
...
…
Next Subnet
192
125
125
240
Broadcast Subnet
192
125
125
248
Answers: Exercise Set 5, Problem 34 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
240
Address
223
99
99
0
Magic Number(s)
16
1st Subnet (Zero Subnet)
223
99
99
0
Next Subnet
223
99
99
16
Next Subnet
223
99
99
32
Next Subnet
223
99
99
48
...
…
Next Subnet
223
99
99
224
Broadcast Subnet
223
99
99
240
Answers: Exercise Set 6, Finding All Subnets, 1 Subnet Octet
Answers: Exercise Set 6, Problem 35 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
252
0
Address
128
1
0
0
Magic Number(s)
4
1st Subnet (Zero Subnet)
128
1
0
0
Next Subnet
128
1
4
0
Next Subnet
128
1
8
0
Next Subnet
128
1
12
0
...
…
Next Subnet
128
1
248
0
Broadcast Subnet
128
1
252
0
Answers: Exercise Set 6, Problem 36 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
224
0
0
Address
63
255
0
0
Magic Number(s)
32
1st Subnet (Zero Subnet)
63
0
0
0
Next Subnet
63
32
0
0
Next Subnet
63
64
0
0
Next Subnet
63
96
0
0
...
…
Next Subnet
63
192
0
0
Broadcast Subnet
63
224
0
0
Answers: Exercise Set 6, Problem 37 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
248
Address
192
168
20
0
Magic Number(s)
8
1st Subnet (Zero Subnet)
192
168
20
0
Next Subnet
192
168
20
8
Next Subnet
192
168
20
16
Next Subnet
192
168
20
24
...
…
Next Subnet
192
168
20
240
Broadcast Subnet
192
168
20
248
Answers: Exercise Set 6, Problem 38 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
192
0
Address
191
191
0
0
Magic Number(s)
64
1st Subnet (Zero Subnet)
191
191
0
0
Next Subnet
191
191
64
0
Next Subnet
191
191
128
0
Broadcast Subnet
191
191
192
0
Answers: Exercise Set 6, Problem 39 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
128
Address
192
192
192
0
Magic Number(s)
128
1st Subnet (Zero Subnet)
192
192
192
0
Broadcast Subnet
192
192
192
128
Answers: Exercise Set 7, Finding All Subnets, 1 Subnet Octet
Answers: Exercise Set 7, Problem 40 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
224
0
Address
169
254
0
0
Magic Number(s)
32
1st Subnet (Zero Subnet)
169
254
0
0
Next Subnet
169
254
32
0
Next Subnet
169
254
64
0
Next Subnet
169
254
96
0
...
…
Next Subnet
169
254
192
0
Broadcast Subnet
169
254
224
0
Answers: Exercise Set 7, Problem 41 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
192
0
Address
139
14
0
0
Magic Number(s)
64
1st Subnet (Zero Subnet)
139
14
0
0
Next Subnet
139
14
64
0
Next Subnet
139
14
128
0
Broadcast Subnet
139
14
192
0
Answers: Exercise Set 7, Problem 42 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
0
0
Address
10
0
0
0
Magic Number(s)
1
1st Subnet (Zero Subnet)
10
0
0
0
Next Subnet
10
1
0
0
Next Subnet
10
2
0
0
Next Subnet
10
3
0
0
...
...
Next Subnet
10
254
0
0
Broadcast Subnet
10
255
0
0
Answers: Exercise Set 7, Problem 43 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
240
0
Address
168
14
0
0
Magic Number(s)
16
1st Subnet (Zero Subnet)
168
14
0
0
Next Subnet
168
14
16
0
Next Subnet
168
14
32
0
Next Subnet
168
14
48
0
...
…
Next Subnet
168
14
224
0
Broadcast Subnet
168
14
240
0
Answers: Exercise Set 7, Problem 44 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
248
Address
215
1
1
0
Magic Number(s)
8
1st Subnet (Zero Subnet)
215
1
1
0
Next Subnet
215
1
1
8
Next Subnet
215
1
1
16
Next Subnet
215
1
1
24
...
…
Next Subnet
215
1
1
240
Broadcast Subnet
215
1
1
248
Answers: Exercise Set 8, Finding All Subnets, 1 Subnet Octet
Answers: Exercise Set 8, Problem 45 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
252
Address
222
222
222
0
Magic Number(s)
4
1st Subnet (Zero Subnet)
222
222
222
0
Next Subnet
222
222
222
4
Next Subnet
222
222
222
8
Next Subnet
222
222
222
12
...
…
Next Subnet
222
222
222
248
Broadcast Subnet
222
222
222
252
Answers: Exercise Set 8, Problem 46 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
254
0
0
Address
111
0
0
0
Magic Number(s)
2
1st Subnet (Zero Subnet)
111
0
0
0
Next Subnet
111
2
0
0
Next Subnet
111
4
0
0
Next Subnet
111
6
0
0
...
…
Next Subnet
111
252
0
0
Broadcast Subnet
111
254
0
0
Answers: Exercise Set 8, Problem 47 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
252
Address
192
168
3
0
Magic Number(s)
4
1st Subnet (Zero Subnet)
192
168
3
0
Next Subnet
192
168
3
4
Next Subnet
192
168
3
8
Next Subnet
192
168
3
12
...
…
Next Subnet
192
168
3
248
Broadcast Subnet
192
168
3
252
Answers: Exercise Set 8, Problem 48 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
255
224
Address
192
168
7
0
Magic Number(s)
32
1st Subnet (Zero Subnet)
192
168
7
0
Next Subnet
192
168
7
32
Next Subnet
192
168
7
64
Next Subnet
192
168
7
96
...
...
Next Subnet
192
168
7
192
Broadcast Subnet
192
168
7
224
Answers: Exercise Set 8, Problem 49 – Answers and Process
Octet 1
Octet 2
Octet 3
Octet 4
Mask
255
255
240
0
Address
172
20
0
0
Magic Number(s)
16
1st Subnet (Zero Subnet)
172
20
0
0
Next Subnet
172
20
16
0
Next Subnet
172
20
32
0
Next Subnet
172
20
48
0
...
…
Next Subnet
172
20
224
0
Broadcast Subnet
172
20
240
0
20
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