Logo

Subnetting Quiz 1

SUBNETTING QUIZ 1

CONGRATULATIONS!

YOU HAVE COMPLETED SUBNETTING QUIZ 1.

YOU HAVE %%SCORE%% TRUE ANSWERS OUT OF %%TOTAL%% QUESTIONS.

YOUR SCORE IS %%PERCENTAGE%%.

%%RATING%%

Your answers are highlighted below.
Question 1
Which one is a Class A address?
A
200.55.12.34
B
172.8.10.1
C
192.1.52.5
D
172.8.202.140
E
10.1.152.8
Question 2
What is the last usable host address of prefix 182.144.10.0/29?
A
182.144.10.254
B
182.144.10.1
C
182.144.10.255
D
182.144.10.0
E
182.144.10.6
Question 3
What is the decimal equivalent of 01001010?
A
70
B
74
C
140
D
142
E
72
Question 4
We have an IP prefix 102.74.200.1/23.Which of the following can be valid host IDs for this prefix?
A
102.74.200.0
B
102.74.202.255
C
102.74.200.255
D
102.74.203.0
E
102.74.201.255
Question 4 Explanation: 
HostMin: 102.74.200.1 01100110.01001010.1100100 0.00000001 HostMax: 102.74.201.254 01100110.01001010.1100100 1.11111110
Question 5
What is the binary equivalent of 188?
A
10001111
B
10101100
C
10111100
D
10111101
E
10110000
Question 6
If you need to have 5 subnets, which subnet mask do you use?
A
255.255.255.254
B
255.255.255.224
C
255.255.255.252
D
255.255.255.240
E
255.255.255.248
Question 7
What is the subnetwork number of a host with an IP address of 100.155.1.0/21?
A
100.155.0.0/21
B
100.155.255.0/21
C
100.155.0.255/21
D
100.155.255.1/21
E
100.155.1.0/21
Question 8
What is the first usable host address of prefix 172.18.16.0/21?
A
172.18.16.0
B
172.18.16.15
C
172.18.16.1
D
172.18.16.54
E
172.18.16.16
Question 9
We have a network address 192.168.1.0 and we would like to divide this network into 7 subnets and there must be at least 18 host addresses in each subnet. Which subnet mush should we use?
A
255.255.255.128 (/25)
B
255.255.255.0 (/24)
C
255.255.255.240 (/28)
D
255.255.255.192 (/26)
E
255.255.255.224 (/27)
Question 10
The decimal dotted format of /26 is :
A
255.255.255.0
B
255.255.255.192
C
255.255.255.224
D
255.255.255.240
E
255.255.255.248
Question 11
What is the broadcast address of prefix 172.18.16.0/21?  
A
172.18.255.255
B
172.18.23.255
C
172.18.25.255
D
172.18.30.255
E
172.18.0.255
Question 11 Explanation: 
Network: 172.18.16.0/21 10101100.00010010.00010 000.00000000 Broadcast: 172.18.23.255 10101100.00010010.00010 111.11111111
Question 12
If you would like to give IP address to 30 hosts from your IP prefix which subnet mask do you use most effectively?
A
255.255.255.254
B
255.255.255.128
C
255.255.255.248
D
255.255.255.240
E
255.255.255.224
Question 13
IP address 10.145.100.6/27 is a part of which host range?
A
10.145.100.1 - 10.145.100.255
B
10.145.100.1 - 10.145.100.30
C
10.145.100.0 - 10.145.100.32
D
10.145.100.0 - 10.145.100.255
E
10.145.100.0 - 10.145.100.63
Question 14
Which subnet does host 12.120.1.185/25 belong to?
A
12.120.1.0/25
B
12.120.1.1/25
C
12.120.1.192/25
D
12.120.1.64/25
E
12.120.1.128/25
Question 15
How many IP addresses can be assigned to hosts, for Subnet Mask 255.255.255.0?
A
224
B
254
C
2
D
255
E
1
Question 16
How many subnets and how many hosts in each subnet are there for the network address 80.160.0.0/20?
A
4096 / 512
B
512 / 4096
C
4094 / 4096
D
4096 / 4094
E
512 / 4094
Question 17
What is the binary equivalent of Subnet Mask 255.255.128.0?
A
11111111.11111111.11111111.00000000
B
11111111.11111111.11111111.00000001
C
11111111.11111111.10000000.00000000
D
11111111.11111111.00000000.00000000
E
11111111.11111111.00000001.00000000
Question 18
What is the binary equivalent of IPv4 address 201.18.171.15?
A
11001011.00010011.10111011.00011111
B
11001001.00110010.10011011.00011110
C
11001001.00010010.10111011.00010011
D
11001001.00010010.10101011.00001111
E
11001001.00010010.10111011.00011111
Question 19
Which Mask is most effective for a Point-to-Point network?
A
/30
B
/28
C
/29
D
/27
E
/24
Question 20
Address 172.16.1.1 is belong to Class .....
A
D
B
B
C
A
D
C
E
E
Once you are finished, click the button below. Any items you have not completed will be marked incorrect. Get Results
There are 20 questions to complete.

 

gokhan-kosem-instructor-ipcisco

Gokhan Kosem is a Network Engineer, Instructor and the Founder of IPCisco.com with 15+ years of experience in Cisco, Nokia, Huawei, Juniper, Linux, Service Provider Networks, Routing and Switching technologies.

He has worked on the backbone networks of major service providers and network vendors including Nortel, Alcatel-Lucent (Nokia) and has extensive hands-on experience with Cisco, Huawei, Juniper and Nokia networking technologies.

He has trained thousands of networking students worldwide through IPCisco.com, Udemy, books, labs, quizzes, and educational content across multiple social media platforms.

IPCisco.com | Best Route to Your Dreams

Latest Lessons
Latest Blog Posts
updated ccnp encor 350-401 v1.2 topics, encor v1.1 versus v1.2
What is New in Updated CCNP ENCOR 350-401 v1.2 Exam?
30 May, 2026
domain-authority
How Global Anycast DNS Deployments Impact Your Enterprise Domain Pricing Strategy
30 May, 2026
Top Packet Tracer Labs for CCNA Exam
Top 3 Most Important Packet Tracer Labs for CCNA
21 May, 2026
com seo domain choice
How SEO Considerations Can Affect Your .com Domain Choice
23 Mar, 2026
most asked 12 network engineer interview questions
Most Asked 12 Network Engineering Interview Questions and Answers
13 Mar, 2026

WHAT YOU WILL FIND?

  • 250.000+ Students All Over The World
  • 8.000+ Questions & Answers
  • 100+ Lab Files & Cheat Sheets
  • 30+ IT/Network Courses
  • A Real Desire To Help You
  • Daily Social Media Shares
  • %100 Satisfaction

COURSES

SPECIALS

MEMBERSHIP

 

CONTACT

  • Pärnu mnt. 139c – 14, 11317, Tallinn, Estonia
  • info@ipcisco.com
Copyright © 2018-2026 IPCisco         Disclaimer          Privacy Policy       Distance Selling Contract