CCNA 200-125 And CCENT Practice Pack Subnetting Success! Set 1

What is the longest subnet mask you can apply to a Class B network and have a minimum of 100 users per subnet while at the same time maximizing the overall number of subnets?


Options are :

  • /25
  • No mask can accomplish this task.
  • /28
  • /24
  • /26
  • /23
  • /27

Answer :/25

Mock : CCNA Cyber Ops - SECOPS # 210-255

What is the last octet of the broadcast address for the 147.28.72.128 /26 subnet?


Options are :

  • 191
  • 138
  • 200
  • 163
  • 192
  • 255

Answer :191

Given the following network and mask, how many valid subnets do you have to work with?

147.12.0.0 /19


Options are :

  • 14
  • 30
  • 8
  • 32
  • 6
  • 16
  • This mask can't be used to subnet this particular network.

Answer :8

How many valid hosts exist on the 148.12.0.0 /21 subnet?


Options are :

  • 2046
  • 8
  • 1022
  • 2048
  • 1024
  • 6

Answer :2046

CCNA 200-125 And CCENT Practice Pack Subnetting Success! Set 3

You're working with a Class C network.   The client requires a minimum of 30 subnets while allowing for at least 20 users per subnet.   Which of the following masks will get the job done?


Options are :

  • No mask can meet these requirements.
  • /29
  • /24
  • /28
  • /26
  • /27
  • /25

Answer :No mask can meet these requirements.

How many valid host IP addresses can you assign on the 55.0.0.0 255.255.255.240 network?


Options are :

  • 16
  • 2046
  • 14
  • 30
  • 2048
  • 32

Answer :14

Which of the following subnet masks would allow each subnet to have at least 60 valid host IP addresses, but not more than 70?


Options are :

  • /26
  • 255.255.255.224
  • /27
  • 255.255.255.192
  • /25
  • 255.255.255.128

Answer :/26 255.255.255.192

Certification : CCNA Cyber Ops - SECOPS # 210-255

What is the shortest subnet mask you can apply to a Class A network and assure yourself of at least 500 valid subnets, but not more than 1000?


Options are :

  • 255.192.0.0
  • 255.255.0.0
  • 255.255.128.0
  • 255.128.0.0
  • 255.0.0.0
  • 255.255.192.0

Answer :255.255.128.0

When you're subnetting, what are you borrowing?


Options are :

  • Host bits
  • Network bits
  • Subnet bits

Answer :Host bits

You've about to subnet the major network number 148.17.0.0.   Which two of these masks will yield at least 30 valid subnets?


Options are :

  • 255.255.240.0
  • 255.255.252.0
  • /20
  • /21
  • 255.255.224.0
  • /19

Answer :255.255.252.0 /21

CCNA Cyber Ops - SECFND # 210-250

You're about to subnet the 10.0.0.0 network.    You need at least 100 valid subnets.    Which three of these masks should you avoid?


Options are :

  • 255.252.0.0
  • 255.192.0.0
  • 255.255.128.0
  • 255.224.0.0
  • 255.255.0.0
  • 255.254.0.0

Answer :255.252.0.0 255.192.0.0 255.224.0.0

What is the final octet of the last valid IP address on the 148.39.47.200 255.255.255.248 subnet?


Options are :

  • 250
  • 207
  • 203
  • 254
  • 210
  • 206
  • 255

Answer :206

Which of these is the longest subnet mask that allows for at least 125 valid host addresses per subnet?


Options are :

  • /24
  • 255.255.254.0
  • /23
  • 255.255.255.0
  • /26
  • 255.255.255.192
  • 255.255.255.128
  • /25

Answer :255.255.255.128 /25

CCNA ICND1 Certification Exam

How many valid host IP addresses exist on the 211.14.19.0 /27 network?


Options are :

  • 16
  • 8
  • 32
  • 6
  • 14
  • 30

Answer :30

What is the last valid IP address on the 222.22.2.192 /27 subnet?


Options are :

  • 254
  • 223
  • 222
  • 255
  • 200
  • 199

Answer :222

Identify the two masks that will yield at least 60 valid hosts per subnet once this mask is applied to a Class B network.


Options are :

  • 255.255.240.0
  • 255.255.255.248
  • 255.255.255.248
  • /27
  • /26

Answer :255.255.240.0 /26

CCNA ICND1 Test

Given the following network and mask, how many valid subnets do you have?

211.17.32.0 /29


Options are :

  • 16
  • 8
  • 30
  • 32
  • 14
  • 6

Answer :32

You've subnetted the 77.0.0.0 network with a /17 mask. How many valid subnets do you have as a result?


Options are :

  • 2
  • 4
  • 6
  • 512
  • 254
  • 8
  • 256
  • 510

Answer :512

What is the broadcast address for the subnet 172.143.8.0 /21?


Options are :

  • 172.143.15.255 /21
  • 172.143.31.255 /21
  • 172.143.255.255 /21
  • 172.143.63.255 /21
  • 172.143.15.0 /21

Answer :172.143.15.255 /21

CCNA ICND1 Questions

Your boss just subnetted the 40.0.0.0 network with a /12 mask.  He says you need at least 40 subnets.  Of course, he should have let you do it in the first place, but now that it's done. what is the situation?


Options are :

  • The subnetting must be performed again; you have more than 20 subnets to work with, but not 40.
  • You're fine; you have more than 40 subnets with this scheme.
  • There's real trouble here; you can't use a /12 mask to subnet a Class B address like this one.
  • The subnetting needs to be redone; you have fewer than 20 subnets to work with your boss's scheme.

Answer :The subnetting needs to be redone; you have fewer than 20 subnets to work with your boss's scheme.

How many valid hosts exist on the 42.17.22.0 /25 subnet?


Options are :

  • 256
  • 4094
  • 128
  • 2046
  • 254
  • 126
  • 2044
  • 4096

Answer :126

What's the shortest subnet mask you can use on a Class C network and still have at least 20 valid subnets to work with?


Options are :

  • /26
  • /29
  • /30
  • /21
  • /27
  • /28
  • /28

Answer :/29

Mock Practice : CCNA Cyber Ops - SECFND # 210-250

What is the shortest subnet mask you can use on a Class B network and assure yourself that you'll have over 1000 valid subnets?


Options are :

  • 255.255.255.128
  • 255.255.128.0
  • 255.255.255.192
  • 255.255.192.0
  • 255.255.255.224
  • 255.255.224.0.0

Answer :255.255.255.192

What is the last octet of the broadcast address for the 201.13.189.96 255.255.255.240 subnet?


Options are :

  • 254
  • 189
  • 112
  • 188
  • 255
  • 111

Answer :111

You've subnetted the 66.0.0.0 network with a mask of 255.255.192.0.  Which of the following ranges best describes how many valid subnets you have to work with?


Options are :

  • 200 - 400
  • 700 - 1000
  • Exactly 1048.
  • 400 - 700
  • 1 - 200
  • 1000 - 1200

Answer :1000 - 1200

Mock Exam : CCNA Cyber Ops - SECFND # 210-250

Given a Class B network and a requirement for a minimum of 800 users per subnet, what is the maximum number of valid subnets?


Options are :

  • 256
  • 62
  • 64
  • 254
  • 128
  • 126

Answer :64

Regarding the "number of valid hosts" and "number of valid subnets" calculations, which involves subtracting 2?


Options are :

  • The valid hosts calculation only.
  • Neither calculation involves subtracting 2.
  • The valid subnets calculation only.
  • Both calculations involve subtracting 2.

Answer :The valid hosts calculation only.

What is the last octet of the broadcast address for the 199.99.9.32 255.255.255.224 subnet?


Options are :

  • 254
  • 127
  • 63
  • 255
  • 64
  • 128

Answer :63

Test : CCNA Cyber Ops - SECOPS # 210-255

Which three of the following subnet masks will allow at least 250 valid IP addresses to be assigned from each resulting subnet when applied to a Class A or Class B network?


Options are :

  • 255.255.255.0
  • 255.255.255.128
  • 255.255.254.0
  • /22
  • 255.255.255.192

Answer :255.255.255.0 255.255.254.0 /22

Which of the following subnets will allow you to assign at least 100 valid IP addresses?


Options are :

  • 10.0.0.0 255.255.255.128
  • 20.0.0.0 255.255.255.0
  • 210.1.1.0 255.255.255.252
  • 166.1.0.0 /29
  • 145.12.0.0 /26

Answer :10.0.0.0 255.255.255.128 20.0.0.0 255.255.255.0

You're subnetting a Class B network, and you need at least 900 valid subnets when you're done.  You want to maximize the number of hosts per subnet, but no specific requirement has been given for that number.   How many valid host addresses will reside on each subnet when you're done?


Options are :

  • 8
  • 254
  • 63
  • 62
  • 64
  • 7
  • 32
  • 256

Answer :62

QA : CCNA Cyber Ops - SECOPS # 210-255

What is the last IP address that can be assigned to a host on the 154.14.224.0 /20 network?   Assume a /20 mask for any address chosen.


Options are :

  • 154.14.254.254
  • 154.14.255.254
  • 154.14.239.255
  • 154.14.255.255
  • 154.14.239.254
  • 154.14.254.255

Answer :154.14.239.254

What mask will give you the exact same number of valid subnets and valid host addresses when applied to a Class C network?


Options are :

  • 255.255.255.192
  • 255.255.255.240
  • 255.255.255.248
  • 255.255.255.252
  • None of these answers is correct; actually, this can't be done.

Answer :None of these answers is correct; actually, this can't be done.

You're subnetting a Class B network, and you need at least 900 valid subnets when you're done.  You want to maximize the number of hosts per subnet, but no specific requirement has been given for that number.  Which of these masks is your best choice?


Options are :

  • 255.255.255.0
  • 255.255.255.224
  • 255.255.224.0
  • 255.255.192.0
  • 255.255.255.192

Answer :255.255.255.192

Practice : CCNA Cyber Ops - SECOPS # 210-255

Your boss just subnetted the 111.0.0.0 network with a 255.255.128.0 mask.   How many valid subnets does this leave you to work with?


Options are :

  • 512
  • 8
  • 256
  • 510
  • 2
  • 254
  • 4

Answer :512

What is the broadcast address for the subnet 44.4.0.0 /18?


Options are :

  • 44.4.128.255 /18
  • 44.4.63.0 /18
  • 44.4.63.255 /18
  • 44.4.127.255 /18
  • 44.4.64.255 /18
  • 44.4.255.255 /18

Answer :44.4.63.255 /18

The network 17.0.0.0 has how many valid host addresses per subnet when subnetted with a mask of 255.255.255.128?


Options are :

  • None of these answers is correct.
  • 254
  • 32
  • 126
  • 256
  • 128
  • 64

Answer :126

Practice : CCNA Cyber Ops - SECOPS # 210-255

Which three of these addresses reside on the 17.2.1.32 /28 subnet?


Options are :

  • 17.2.1.45
  • 17.2.1.48
  • 17.2.1.35
  • 17.2.1.31
  • 17.2.1.40

Answer :17.2.1.45 17.2.1.35 17.2.1.40

When applied to a Class A network, the subnet mask 255.255.128.0 results in how many valid subnets?


Options are :

  • 2
  • 1022
  • 512
  • 4
  • 510
  • 1024

Answer :512

What is the longest mask you can apply to a Class C network and have at least 50 valid host addresses?


Options are :

  • /28
  • /27
  • /26
  • /29
  • /25

Answer :/26

Mock : CCNA Cyber Ops - SECOPS # 210-255

You're working with the 10.0.0.0 network, and oddly enough, your client is requesting you have at least 300 valid host addresses per subnet while not specifying how many subnets he needs.   As a world-class network admin, you'd like to maximize the number of subnets while delivering on the client request.   Which of the following masks is your best choice?


Options are :

  • 255.255.192.0
  • 255.254.0.0
  • 255.255.0.0
  • 255.192.0.0
  • 255.255.254.0

Answer :255.255.254.0

What is the full range of valid IP host addresses on the 17.1.33.128 255.255.255.128 subnet?


Options are :

  • 17.1.33.128 - 17.1.33.255
  • 17.1.33.1 - 17.1.33.254
  • 17.1.33.0 - 17.1.33.255
  • 17.1.33.129 - 17.1.33.254
  • 17.1.33.128 - 17.1.33.254

Answer :17.1.33.129 - 17.1.33.254

Which of these subnets contains the IP address 214.82.217.60 /28?


Options are :

  • 214.82.217.12 /28
  • 214.82.217.52 /28
  • 214.82.217.32 /28
  • 214.82.217.60 /28
  • 214.82.217.48 /28

Answer :214.82.217.48 /28

Practice : CCNA Cyber Ops - SECOPS # 210-255

What is the minimum amount of subnet bits needed if your client's network requires 1800 subnets?


Options are :

  • 9
  • 13
  • 11
  • 10
  • 8
  • 12

Answer :11

Can you subnet the 55.0.0.0 network with a subnet mask of 255.192.0.0?   If so, how many valid subnets will you have?


Options are :

  • That mask is perfectly fine and you'll have 2 valid subnets to work with.
  • No problem, and you'll have 4 valid subnets.
  • This mask is legal and will result in 256 valid subnets when applied to this particular network.
  • You cannot use a mask of 255.192.0.0 on this particular network.

Answer :No problem, and you'll have 4 valid subnets.

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