Subnetting Questions and Answers
Subnetting is one of the most important topics in networking, helping professionals efficiently allocate IP addresses and optimize network performance. This section presents a range of networking aptitude questions and answers with explanations focusing on subnet masks, CIDR notation, and IP calculations. Mastering these concepts is essential for certifications like Cisco CCNA and placement exams conducted by Infosys, Wipro, and TCS. The questions are designed to test both speed and conceptual accuracy. By practicing subnetting aptitude questions with solutions PDF, you can develop a strong foundation for network design and troubleshooting roles.
Subnetting
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43 questions
41. What is the formula to calculate usable hosts
- 2ⁿ
- 2ⁿ − 1
- Explanation: Two addresses are reserved for network and broadcast.
- 2ⁿ + 2
42. Which subnet mask gives exactly 62 usable hosts
- /25
- /26
- Explanation: /27 provides 64 total addresses, 62 usable.
- /28
43. Why is subnetting important in large networks
- It increases IP address length
- Explanation: Subnetting limits broadcast traffic and improves performance.
- It removes routers
- It eliminates security risks