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  1. What is the primary purpose of subnetting in IPv4 networks?
    a. To increase the number of available IP addresses
    b. To divide a large network into smaller, more manageable segments
    c. To assign more addresses to a single device
    d. To reduce the need for routingibm+1

Answer: b. To divide a large network into smaller, more manageable segmentscbtnuggets+1

  1. Which part of an IPv4 address is used for subnetting?
    a. Only the host portion
    b. Only the network portion
    c. Both network and host portions
    d. Only the broadcast addressgeeksforgeeks+1

Answer: c. Both network and host portionsibm+1

  1. How many bits are in a standard subnet mask for a Class C address?
    a. 8
    b. 16
    c. 24
    d. 32geeksforgeeks

Answer: c. 24geeksforgeeks

  1. What is the subnet mask for /27 CIDR notation?
    a. 255.255.255.128
    b. 255.255.255.192
    c. 255.255.255.224
    d. 255.255.255.240cbtnuggets

Answer: c. 255.255.255.224cbtnuggets

  1. In the address 192.168.1.34/28, how many valid hosts per subnet are possible?
    a. 14
    b. 16
    c. 30
    d. 32ipcisco+1

Answer: a. 14ipcisco+1

  1. Which address is always reserved as the broadcast address in a subnet?
    a. The first address
    b. The last address
    c. The second address
    d. The middle addressibm+1

Answer: b. The last addressibm+1

  1. For the network 10.0.0.0/8, how many subnets will /16 yield?
    a. 128
    b. 256
    c. 512
    d. 1024cliffsnotes+1

Answer: b. 256cliffsnotes+1

  1. What is the default subnet mask for a Class B network?
    a. 255.0.0.0
    b. 255.255.0.0
    c. 255.255.255.0
    d. 255.255.255.128mastguru+1

Answer: b. 255.255.0.0mastguru+1

  1. What is the valid host range for the subnet 192.168.10.64/26?
    a. 192.168.10.64-192.168.10.127
    b. 192.168.10.65-192.168.10.126
    c. 192.168.10.66-192.168.10.128
    d. 192.168.10.67-192.168.10.129scribd

Answer: b. 192.168.10.65-192.168.10.126scribd

  1. Which calculation gives the number of valid hosts per subnet?
    a. 2^n
    b. 2^n – 1
    c. 2^n – 2
    d. 2^n – 4ipcisco+1

Answer: c. 2^n – 2ipcisco+1

  1. What does CIDR stand for?
    a. Classful Internet Domain Routing
    b. Classless Inter-Domain Routing
    c. Classful Inter-Domain Routing
    d. Computed Inter-Domain Routinggeeksforgeeks+1

Answer: b. Classless Inter-Domain Routingcbtnuggets+1

  1. In subnetting, what is the purpose of a subnet mask?
    a. To identify the network and host portions of an IP address
    b. To encrypt data
    c. To mask DNS queries
    d. To set routing prioritieslearn.microsoft+1

Answer: a. To identify the network and host portions of an IP addresslearn.microsoft+1

  1. What is the broadcast address for the subnet 172.16.66.0/21?
    a. 172.16.66.255
    b. 172.16.67.255
    c. 172.16.71.255
    d. 172.16.72.255nitizsharma

Answer: c. 172.16.71.255nitizsharma

  1. Which subnet mask is valid for creating 30 subnets in a Class C network?
    a. 255.255.255.224
    b. 255.255.255.252
    c. 255.255.255.248
    d. 255.255.255.240sanfoundry

Answer: d. 255.255.255.240sanfoundry

  1. How many subnets does a /29 prefix allow from a Class C network?
    a. 2
    b. 4
    c. 8
    d. 16cliffsnotes+1

Answer: c. 8cliffsnotes+1

  1. Which of the following is the network address for the IP 192.168.200.45/26?
    a. 192.168.200.0
    b. 192.168.200.32
    c. 192.168.200.64
    d. 192.168.200.128scribd

Answer: b. 192.168.200.32scribd

  1. If 5 bits are borrowed for subnetting, how many subnets are created?
    a. 16
    b. 30
    c. 32
    d. 64sanfoundry+1

Answer: c. 32sanfoundry+1

  1. What is the last valid host of the subnet 10.10.5.128/26?
    a. 10.10.5.190
    b. 10.10.5.191
    c. 10.10.5.190
    d. 10.10.5.189scribd

Answer: c. 10.10.5.190scribd

  1. When subnetting, what two addresses cannot be assigned to hosts?
    a. Network and broadcast addresses
    b. First and middle addresses
    c. Last two addresses
    d. Addresses ending in .1 and .255ibm+1

Answer: a. Network and broadcast addressesipcisco+1

  1. For 192.168.1.0/25, what is the range of valid host addresses?
    a. 192.168.1.0–192.168.1.127
    b. 192.168.1.1–192.168.1.126
    c. 192.168.1.2–192.168.1.127
    d. 192.168.1.128–192.168.1.255cliffsnotes+1

Answer: b. 192.168.1.1–192.168.1.126cliffsnotes+1

  1. The subnet mask 255.255.255.240 supports how many usable hosts per subnet?
    a. 14
    b. 16
    c. 30
    d. 32sanfoundry+1

Answer: a. 14sanfoundry+1

  1. What is the Class of IP address 172.16.13.5?
    a. Class A
    b. Class B
    c. Class C
    d. Class Dsanfoundry

Answer: b. Class Bsanfoundry

  1. What is the broadcast address for 192.168.0.0/28?
    a. 192.168.0.14
    b. 192.168.0.15
    c. 192.168.0.16
    d. 192.168.0.17scribd

Answer: b. 192.168.0.15scribd

  1. The subnet 255.255.255.192 provides how many subnets in Class C?
    a. 2
    b. 4
    c. 6
    d. 8mastguru+1

Answer: b. 4mastguru+1

  1. Which address is the network address for 10.67.34.196/27?
    a. 10.67.34.192
    b. 10.67.34.224
    c. 10.67.34.200
    d. 10.67.34.240scribd

Answer: a. 10.67.34.192scribd

  1. What is the primary advantage of VLSM (Variable Length Subnet Mask)?
    a. Reduced routing complexity
    b. More efficient IP address usage
    c. Easier network design
    d. Faster data transfer speedscbtnuggets+1

Answer: b. More efficient IP address usageipcisco+1

  1. Which is the subnet mask for 172.16.0.0/20?
    a. 255.255.255.192
    b. 255.255.240.0
    c. 255.255.254.0
    d. 255.255.248.0nitizsharma+1

Answer: b. 255.255.240.0nitizsharma+1

  1. Which two subnets are available if 255.255.255.192 is used on 192.168.1.0?
    a. 192.168.1.0 & 192.168.1.128
    b. 192.168.1.0 & 192.168.1.64
    c. 192.168.1.128 & 192.168.1.192
    d. 192.168.1.64 & 192.168.1.128examveda+1

Answer: a. 192.168.1.0 & 192.168.1.128examveda+1

  1. Which subnet mask is suitable for 50 usable hosts?
    a. 255.255.255.192
    b. 255.255.255.224
    c. 255.255.255.128
    d. 255.255.255.240ipcisco+1

Answer: a. 255.255.255.192cliffsnotes+1

  1. What do the remaining bits after subnet bits represent?
    a. Hosts
    b. Networks
    c. Broadcasts
    d. Routerslearn.microsoft+1

Answer: a. Hostslearn.microsoft+1

  1. The IP 151.242.16.49 with 7 subnet bits yields how many hosts per subnet?
    a. 128
    b. 254
    c. 256
    d. 510testbook

Answer: d. 510testbook

  1. The purpose of a broadcast address is to:
    a. Identify a single host
    b. Address all hosts in the subnet
    c. Route packets across networks
    d. Mask the host portionibm+1

Answer: b. Address all hosts in the subnetibm+1

  1. All-0 and all-1 subnets were once reserved. What changed this?
    a. The introduction of CIDR
    b. Routing protocol updates
    c. RFC 1878 allowing use
    d. Larger IP poolsibm

Answer: c. RFC 1878 allowing useibm

  1. The valid host range in 172.22.94.144/28 is:
    a. 172.22.94.145–172.22.94.158
    b. 172.22.94.146–172.22.94.159
    c. 172.22.94.146–172.22.94.158
    d. 172.22.94.145–172.22.94.159nitizsharma

Answer: a. 172.22.94.145–172.22.94.158nitizsharma

  1. Which subnet mask provides four equal subnets for a Class C network?
    a. 255.255.255.192
    b. 255.255.255.224
    c. 255.255.255.240
    d. 255.255.255.128mastguru+1

Answer: a. 255.255.255.192mastguru+1

  1. What is the subnet number for 172.16.66.0/21?
    a. 172.16.64.0
    b. 172.16.66.0
    c. 172.16.68.0
    d. 172.16.80.0nitizsharma

Answer: a. 172.16.64.0nitizsharma

  1. A /23 mask allows for how many hosts?
    a. 254
    b. 510
    c. 1022
    d. 2046testbook

Answer: b. 510testbook

  1. The first valid host address in subnet 192.168.4.32/28 is:
    a. 192.168.4.32
    b. 192.168.4.33
    c. 192.168.4.34
    d. 192.168.4.35scribd

Answer: b. 192.168.4.33scribd

  1. How many bits define the network portion in a /20 mask?
    a. 8
    b. 12
    c. 16
    d. 20ipcisco+1

Answer: d. 20nitizsharma+1

  1. Which of the following is true about subnet zero?
    a. It cannot be used
    b. It is always broadcast
    c. It is valid and usable
    d. It is used only for testingibm

Answer: c. It is valid and usableibm

  1. What is the main benefit of using smaller subnets in a network?
    a. Increases routing overhead
    b. Reduces broadcast domains size
    c. Makes IP management harder
    d. Increases host addressescloudflare+1

Answer: b. Reduces broadcast domains sizecloudflare+1

  1. How many subnets are possible with a /28 mask in a Class C network?
    a. 8
    b. 16
    c. 4
    d. 32cliffsnotes+1

Answer: b. 16ipcisco+1

  1. 255.255.255.248 as a mask supports how many hosts?
    a. 6
    b. 8
    c. 14
    d. 16cbtnuggets+1

Answer: a. 6cbtnuggets+1

  1. What is the network address for 172.19.64.155/18?
    a. 172.19.0.0
    b. 172.19.64.0
    c. 172.19.128.0
    d. 172.19.96.0cliffsnotes

Answer: b. 172.19.64.0cliffsnotes

  1. In a /26 subnet, how many addresses are usable for hosts?
    a. 30
    b. 62
    c. 28
    d. 126cbtnuggets+1

Answer: b. 62cbtnuggets+1

  1. The subnet address for 10.173.8.217/20 is:
    a. 10.173.8.0
    b. 10.173.0.0
    c. 10.173.16.0
    d. 10.173.8.128scribd

Answer: a. 10.173.8.0scribd

  1. Which of the following would NOT be a valid subnet mask?
    a. 255.255.255.252
    b. 255.255.255.254
    c. 255.255.255.0
    d. 255.255.255.1mastguru+1

Answer: d. 255.255.255.1mastguru+1

  1. The host 192.168.48.124/27 belongs to which subnet?
    a. 192.168.48.0
    b. 192.168.48.16
    c. 192.168.48.32
    d. 192.168.48.96scribd

Answer: d. 192.168.48.96scribd

  1. The subnet mask 255.255.255.128 allows for how many subnets in Class B?
    a. 128
    b. 256
    c. 512
    d. 1024mastguru+1

Answer: b. 256mastguru+1

  1. What is the first valid host in the subnet 192.168.5.64/28?
    a. 192.168.5.64
    b. 192.168.5.65
    c. 192.168.5.66
    d. 192.168.5.70scribd

Answer: b. 192.168.5.65scribd

 

 

  1. https://www.ibm.com/docs/en/zos/3.1.0?topic=internetworking-ipv4-subnetting
  2. https://www.cbtnuggets.com/blog/technology/networking/networking-basics-what-is-ipv4-subnetting
  3. https://www.geeksforgeeks.org/computer-networks/introduction-to-subnetting/
  4. https://ipcisco.com/lesson/ip-subnetting-and-subnetting-examples/
  5. https://www.cliffsnotes.com/study-notes/21911602
  6. https://www.mastguru.com/subnetting-questions-answers/question/136
  7. https://www.scribd.com/document/383887284/50-Ipv4-Subnetting-Practice-Questions-With-Answer-Key
  8. https://learn.microsoft.com/en-us/troubleshoot/windows-client/networking/tcpip-addressing-and-subnetting
  9. https://nitizsharma.com/questions-and-answers-for-subnetting/
  10. https://www.sanfoundry.com/computer-networks-questions-answers-analyzing-subnet-mask/
  11. https://www.examveda.com/networking/practice-mcq-question-on-subnetting/
  12. https://testbook.com/objective-questions/mcq-on-ipv4–5eea6a0939140f30f369d912
  13. https://www.cloudflare.com/learning/network-layer/what-is-a-subnet/
  14. https://ipcisco.com/subnetting-quiz-1-n485hju/
  15. https://www.indiabix.com/networking/subnetting/
  16. https://subnetipv4.com
  17. https://www.subnetting.net/Subnetting.aspx?mode=practice
  18. https://subnettingpractice.com
  19. https://in.indeed.com/career-advice/interviewing/subnetting-interview-questions
  20. https://www.grabstudy.com/Technical-MCQs/Subnetting.php
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