IP Concepts Flashcards
Not linked to modules but important
1
Q
What is 00000000 in decimal?
A
0
2
Q
What is 240 in binary?
A
11110000
3
Q
What is 192 in binary?
A
11000000
4
Q
What is 10000000 in decimal?
A
128
5
Q
What is 11111110 in decimal?
A
254
6
Q
What is 128 in binary?
A
10000000
7
Q
What is 11111111 in decimal?
A
255
8
Q
What is 248 in binary?
A
11111000
9
Q
What is 224 in binary?
A
11100000
10
Q
what is 252 in binary?
A
11111100
11
Q
What is 11110000 in decimal?
A
240
12
Q
What is 11111111 in decimal?
A
255
13
Q
What is 192 in binary?
A
11000000
14
Q
What is 11111110 in decimal?
A
254
15
Q
What is 11111000 in decimal?
A
248
16
Q
What is 00000000 in decimal?
A
0
17
Q
What is 224 in binary?
A
11100000
18
Q
What is 252 in binary?
A
11111100
19
Q
What is 10.0.0.1 in binary?
A
00001010.00000000.00000000.00000001
20
Q
What is 192.135.64.5 in binary?
A
11000000.10000111.1000000.101
21
Q
What is 10.250.19.88 in binary?
A
1010.11111010.10011.1011000
22
Q
What is 172 in binary?
A
10101100
23
Q
What is 8.56.140.33 in binary?
A
00001000.00111000.10001100.00100001
24
Q
What is 203.1.77.144 in binary?
A
11001011.00000001.01001101.10010000
25
What is 195.17.46.12 in binary?
11000011.00010001.00101110.00001100
26
What is 101.200.15.66 in binary?
01100101.11001000.00001111.01000010
27
What is 39 in binary?
100111
28
What is 220 in binary?
11011100
29
What is 154 in binary?
10011010
30
What is 250 in binary?
11111010
31
What is 87 in binary?
1010111
32
How many usable IP addresses are in a /27 network?
30
## Footnote
Total IPs = 2^(32-CIDR) then subtract 2 (network and broadcast)
2^(32-27) = 2^5 = 32
32-2 = 30
33
What is the subnet mask for a /14 CIDR network?
255.252.0.0
## Footnote
Convert the CIDR prefix into binary 1's and count them
11111111.11111100.0.0
Now convert the binary into decimal
255.252.0.0
34
How many usable IP addresses are in a /26 network?
62
35
What is the subnet mask for a /22 CIDR network?
255.255.252.0
36
What is the subnet mask for a /17 CIDR network?
255.255.128.0
37
What is the subnet mask for a /15 CIDR network?
255.254.0.0
38
How many usable IP addresses are in a /21 network?
2,046
39
What is the CIDR notation for the subnet mask 255.255.255.0?
/24
40
What is the subnet mask for a /29 CIDR network?
255.255.255.248
41
What is the subnet mask for a /16 CIDR network?
255.255.0.0
42
What is the subnet mask for a /30 CIDR network?
255.255.255.252
43
How many usable IP addresses are in a /25 network?
126
44
What is the CIDR notation for the subnet mask 255.192.0.0?
/10
45
What is the CIDR notation for the subnet mask 255.255.255.224?
/27
46
What is the subnet mask for a /22 CIDR network?
255.255.252.0
47
What is the subnet mask for a /15 CIDR network?
255.254.0.0
48
How many usable IP addresses are in a /30 network?
2
49
What is the subnet mask for a /18 CIDR network?
255.255.192.0
50
What is the subnet mask for a /12 CIDR network?
255.240.0.0
51
What is the subnet mask for a /14 CIDR network?
255.252.0.0
52
What is the CIDR notation for the subnet mask 255.255.255.254?
/31
53
How many usable IP addresses are in a /28 network?
14
54
What is the subnet mask for a /16 CIDR network?
255.255.0.0
55
What is the subnet mask for a /8 CIDR network?
255.0.0.0
56
What is the CIDR notation for the subnet mask 255.255.248.0?
/21
57
What is the CIDR notation for the subnet mask 255.255.255.128?
/25
58
What is the subnet mask for a /13 CIDR network?
255.248.0.0
59
How many usable IP addresses are in a /25 network?
126
60
What is the CIDR notation for the subnet mask 255.255.240.0?
/20
61
What is the CIDR notation for the subnet mask 255.224.0.0?
/11
62
What is the CIDR notation for the subnet mask 255.254.0.0?
/15
63
What is the CIDR notation for the subnet mask 255.255.224.0?
/19
64
How many usable IP addresses are in a /25 network?
126
65
What is the subnet mask for a /18 CIDR network?
255.255.192.0
66
What is the binary for 1?
00000001
67
What is the binary for 2?
00000010
68
What is the binary for 4?
00000100
69
What is the binary for 8?
00001000
70
What is the binary for 16?
00010000
71
What is the binary for 32?
00100000
72
What is the binary for 64?
01000000
73
What is the binary for 128?
10000000
74
What is the binary for 192?
11000000
75
What is the binary for 224?
11100000
76
What is the binary for 240?
11110000
77
What is the binary for 248?
11111000
78
What is the binary for 252?
11111100
79
What is the binary for 254?
11111110
80
What is the binary for 255?
11111111
