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CCNA: Enterprise Networking, Security, and Automation > IP Concepts > Flashcards

IP Concepts Flashcards

Not linked to modules but important

1
Q

What is 00000000 in decimal?

A

0

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2
Q

What is 240 in binary?

A

11110000

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3
Q

What is 192 in binary?

A

11000000

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4
Q

What is 10000000 in decimal?

A

128

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5
Q

What is 11111110 in decimal?

A

254

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6
Q

What is 128 in binary?

A

10000000

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7
Q

What is 11111111 in decimal?

A

255

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8
Q

What is 248 in binary?

A

11111000

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9
Q

What is 224 in binary?

A

11100000

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10
Q

what is 252 in binary?

A

11111100

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11
Q

What is 11110000 in decimal?

A

240

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12
Q

What is 11111111 in decimal?

A

255

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13
Q

What is 192 in binary?

A

11000000

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14
Q

What is 11111110 in decimal?

A

254

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15
Q

What is 11111000 in decimal?

A

248

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16
Q

What is 00000000 in decimal?

A

0

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17
Q

What is 224 in binary?

A

11100000

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18
Q

What is 252 in binary?

A

11111100

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19
Q

What is 10.0.0.1 in binary?

A

00001010.00000000.00000000.00000001

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20
Q

What is 192.135.64.5 in binary?

A

11000000.10000111.1000000.101

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21
Q

What is 10.250.19.88 in binary?

A

1010.11111010.10011.1011000

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22
Q

What is 172 in binary?

A

10101100

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23
Q

What is 8.56.140.33 in binary?

A

00001000.00111000.10001100.00100001

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24
Q

What is 203.1.77.144 in binary?

A

11001011.00000001.01001101.10010000

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25
Q

What is 195.17.46.12 in binary?

A

11000011.00010001.00101110.00001100

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26
Q

What is 101.200.15.66 in binary?

A

01100101.11001000.00001111.01000010

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27
Q

What is 39 in binary?

A

100111

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28
Q

What is 220 in binary?

A

11011100

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29
Q

What is 154 in binary?

A

10011010

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30
Q

What is 250 in binary?

A

11111010

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31
Q

What is 87 in binary?

A

1010111

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32
Q

How many usable IP addresses are in a /27 network?

A

30

Total IPs = 2^(32-CIDR) then subtract 2 (network and broadcast)
2^(32-27) = 2^5 = 32
32-2 = 30

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33
Q

What is the subnet mask for a /14 CIDR network?

A

255.252.0.0

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
Q

How many usable IP addresses are in a /26 network?

A

62

35
Q

What is the subnet mask for a /22 CIDR network?

A

255.255.252.0

36
Q

What is the subnet mask for a /17 CIDR network?

A

255.255.128.0

37
Q

What is the subnet mask for a /15 CIDR network?

A

255.254.0.0

38
Q

How many usable IP addresses are in a /21 network?

A

2,046

39
Q

What is the CIDR notation for the subnet mask 255.255.255.0?

A

/24

40
Q

What is the subnet mask for a /29 CIDR network?

A

255.255.255.248

41
Q

What is the subnet mask for a /16 CIDR network?

A

255.255.0.0

42
Q

What is the subnet mask for a /30 CIDR network?

A

255.255.255.252

43
Q

How many usable IP addresses are in a /25 network?

A

126

44
Q

What is the CIDR notation for the subnet mask 255.192.0.0?

A

/10

45
Q

What is the CIDR notation for the subnet mask 255.255.255.224?

A

/27

46
Q

What is the subnet mask for a /22 CIDR network?

A

255.255.252.0

47
Q

What is the subnet mask for a /15 CIDR network?

A

255.254.0.0

48
Q

How many usable IP addresses are in a /30 network?

A

2

49
Q

What is the subnet mask for a /18 CIDR network?

A

255.255.192.0

50
Q

What is the subnet mask for a /12 CIDR network?

A

255.240.0.0

51
Q

What is the subnet mask for a /14 CIDR network?

A

255.252.0.0

52
Q

What is the CIDR notation for the subnet mask 255.255.255.254?

A

/31

53
Q

How many usable IP addresses are in a /28 network?

A

14

54
Q

What is the subnet mask for a /16 CIDR network?

A

255.255.0.0

55
Q

What is the subnet mask for a /8 CIDR network?

A

255.0.0.0

56
Q

What is the CIDR notation for the subnet mask 255.255.248.0?

A

/21

57
Q

What is the CIDR notation for the subnet mask 255.255.255.128?

A

/25

58
Q

What is the subnet mask for a /13 CIDR network?

A

255.248.0.0

59
Q

How many usable IP addresses are in a /25 network?

A

126

60
Q

What is the CIDR notation for the subnet mask 255.255.240.0?

A

/20

61
Q

What is the CIDR notation for the subnet mask 255.224.0.0?

A

/11

62
Q

What is the CIDR notation for the subnet mask 255.254.0.0?

A

/15

63
Q

What is the CIDR notation for the subnet mask 255.255.224.0?

A

/19

64
Q

How many usable IP addresses are in a /25 network?

A

126

65
Q

What is the subnet mask for a /18 CIDR network?

A

255.255.192.0

66
Q

What is the binary for 1?

A

00000001

67
Q

What is the binary for 2?

A

00000010

68
Q

What is the binary for 4?

A

00000100

69
Q

What is the binary for 8?

A

00001000

70
Q

What is the binary for 16?

A

00010000

71
Q

What is the binary for 32?

A

00100000

72
Q

What is the binary for 64?

A

01000000

73
Q

What is the binary for 128?

A

10000000

74
Q

What is the binary for 192?

A

11000000

75
Q

What is the binary for 224?

A

11100000

76
Q

What is the binary for 240?

A

11110000

77
Q

What is the binary for 248?

A

11111000

78
Q

What is the binary for 252?

A

11111100

79
Q

What is the binary for 254?

A

11111110

80
Q

What is the binary for 255?

A

11111111

CCNA: Enterprise Networking, Security, and Automation (7 decks)

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