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Subnetting Questions | IP Addressing, CCNA Subnetting Practice Questions

Subnetting Questions

A subnet is a logical way to divide network of any organization into two or more networks. Students who are preparing for CCNA (Cisco Certified Network Associate) technical certificate may increase their knowledge from CCNA Subnetting Questions and answers below given.

Generally, it is a technique to represent all the machines at one geographic location, in one building, or on the same local area network (LAN). To discover subnet process in any organization, IP Addressing plays an important role to connect all the connections. Here, on the page of, we have bought IP addressing and Subnetting Questions and answers for candidates who want to practice from IP Subnetting Questions.

Subnetting Questions

Aspirants have CCNA certificate offers from Cisco for early-career networking professionals, candidates must practice from below given Subnetting questions and answers. These questions will help you to crack any competitive exam.

CCNA Subnetting Questions

Question 1: Given the IP address of with a mask of–How many total subnets could be created? (assume all subnets use the same subnet mask)

  1. 65536
  2. 254
  3. 256
  4. 64

Ans: 3

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Question 2: Represent /26 in dotted decimal format:

  1. 0.0.0
  2. 255.255.192
  3. 255.255.0
  4. 255.255.128

Ans: 2

Question 3: What address Class does belong to?

  1. Class A
  2. Class B
  3. Class C
  4. Class D

Ans: 2

Question 4:  When calculating usable hosts per subnet, the following formula is used 2^bits – 2. For what reason is two subtracted? (choose two)

  1. Broadcast
  2. Multicast
  3. Unicast
  4. Network

Ans: 4

Question 5:  Your organization is designing a Wide Area Network. Locations have varying numbers of hosts. The largest network will have no more than 55 hosts. What subnet mask accomplishes the goal and maximizes the number of subnets that may be created?

  1. 255.255.192
  2. /25
  3. 255.255.224
  4. /27

Ans: 1

Question 6: How many hosts can be located on a network, where the IPv4 netmask is 27 bits?

  1. 27
  2. 30
  3. 32
  4. 5

Ans: 2

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Question 7: What are two ways to represent a network mask that would allow 14 hosts?

  1. /14
  2. 255.255.240
  3. 255.14.0
  4. /28

Ans: 2 & 4

Question 8: How many hosts can be addressed on

  1. 16
  2. 254
  3. 65536
  4. 65534

Ans: 4

Question 9: Convert the following binary to decimal–01101101.

  1. 225
  2. 109
  3. 1101
  4. 112

Ans: 2

Question 10: Choose the true statements (choose two).

  1. Odd numbers have the least significant bit set to 0
  2. Even numbers have the least significant bit set to 0
  3. Odd numbers have the least significant bit set to 1
  4. Even numbers have the least significant bit set to 1

Ans: 2 & 3

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Question 11: What subnet mask will allow for 128 hosts on a subnet? (choose the best two answers)

  1. /25
  2. /24 <–
  3. 255.255.0 <–
  4. 255.255.128

Ans: 2 & 3 

Question 12:  Based on, the IP address would be:

  1. Class A <–
  2. Class B
  3. Class C
  4. Class D

Ans: 1 

Question 13: You need to subnet a network that has 5 subnets, each with at least 16 hosts. Which classful subnet mask would you use?

  1. 255.255.192
  2. 255.255.224
  3. 255.255.240
  4. 255.255.248

Ans: 4

Question 14: What is the maximum number of IP addresses that can be assigned to hosts on a local subnet that uses the subnet mask?

  1. 14
  2. 15
  3. 16
  4. 30

Ans: 4

Question 15: You have a network that needs 29 subnets while maximizing the number of host addresses available on each subnet. How many bits must you borrow from the host field to provide the correct subnet mask?

  1. 2
  2. 3
  3. 4
  4. 5

Ans: 4

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Question 16: If an Ethernet port on a router were assigned an IP address of, what would be the valid subnet address of this host?

  1. 16.112.0
  2. 16.0.0
  3. 16.96.0
  4. 16.255.0

Ans: 1

Question 17: You have an interface on a router with the IP address of Including the router interface, how many hosts can have IP addresses on the LAN attached to the router interface?

  1. 6
  2. 8
  3. 30
  4. 32

Ans: 1

Question 18: What is the subnetwork number of a host with an IP address of

  1. 16.36.0
  2. 16.48.0
  3. 16.64.0
  4. 16.0.0

Ans: 3

Question 19: The network address of provides how many subnets and hosts?

  1. 7 subnets, 30 hosts each
  2. 8 subnets, 8,190 hosts each
  3. 8 subnets, 2,046 hosts each
  4. 7 subnets, 2,046 hosts each

Ans: 2

Question 20: You have an interface on a router with the IP address of What is the broadcast address the hosts will use on this LAN?

  1. 168.192.15
  2. 168.192.31
  3. 168.192.63
  4. 168.192.127

Ans: 1

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So, these are the CCNA Subnetting questions which will help you to increase knowledge in subnetting. Those aspirants who want IP addressing and Subnetting questions and answers PDF, they may go through the direct links given on our page. These Subnetting questions will make you able to participate in any entrance exam of CCNA.

Students may get CCNA Subnetting questions and answers PDF from the above section of the page. By practicing from Subnetting questions and answers, aspirants can crack any entrance of the CCNA to grab Jobs in Technical Field.


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Subnetting questions and answers with explanation PDF can be obtain by direct links available on this page.

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