Microsoft Networking Essentials Exam Cheat Sheet 2026

The 30 highest-yield Microsoft Networking Essentials Exam facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What is the valid host range for the subnet 10.0.0.128/25? → 10.0.0.129 – 10.0.0.254
2. Which IEEE standard defines the Wi-Fi 6 (802.11ax) wireless networking specification? → IEEE 802.11ax
3. Which of the following IPv4 addresses is a Class A private address? → 10.200.50.1
4. What is the total number of possible IPv4 addresses? → About 4.3 billion
5. Why is documentation important in Microsoft Networking Essentials Exam risk management? → It creates an audit trail, supports decision-making, and demonstrates due diligence
6. In a star topology, if the central connecting device fails, what happens? → The entire network goes down
7. A private network that enables data sharing between members of an organization is: → Intranet
8. What is the primary function of a network switch? → Forward frames based on MAC addresses within a network
9. How do Microsoft Networking Essentials Exam professionals build trust with clients or stakeholders? → Through consistent competence, transparency, reliability, and ethical behavior
10. How does a Microsoft Networking Essentials Exam professional communicate risks to stakeholders? → By presenting risks clearly with context, potential impacts, and recommended actions
11. What is the default subnet mask for a Class B IP address? → 255.255.0.0
12. Which protocol is used to send email from a client to a mail server? → SMTP
13. What is the benefit of standardized digital reporting in Microsoft Networking Essentials Exam practice? → It ensures consistency, enables comparison, and facilitates regulatory compliance
14. How many subnets does a /28 mask create from a Class C network? → 16
15. Which notation is equivalent to the subnet mask 255.255.255.192? → /26
16. Which protocol provides connection-less, best-effort delivery of datagrams? → UDP
17. What is the first step in risk assessment for Microsoft Networking Essentials Exam professionals? → Identifying potential hazards and vulnerabilities in the specific context
18. What role does active listening play in Microsoft Networking Essentials Exam practice? → It ensures accurate understanding, demonstrates respect, and improves outcomes
19. You should utilize a to directly link two computers' Ethernet network interface cards (NICs). → Crossover cable
20. What is reflective practice in Microsoft Networking Essentials Exam professional development? → Systematically examining experiences to gain insight and improve future practice
21. Which cable type uses light to transmit data and is immune to electromagnetic interference? → Fiber optic
22. What device operates at Layer 3 and forwards packets between different networks? → Router
23. What type of IPv4 address is 127.0.0.1? → Loopback
24. What is an SSID broadcasting security flaw that is inherently present? → It broadcasts the identity of the network.
25. Which protocol is used to synchronize time across network devices? → NTP
26. What is the purpose of 802.1X authentication in a network? → Provide port-based network access control requiring authentication before granting access
27. What does CIDR stand for in networking? → Classless Inter-Domain Routing
28. Given the IP address 172.16.50.100/20, what is the network address? → 172.16.48.0
29. What is the maximum data rate of Fast Ethernet (100BASE-TX)? → 100 Mbps
30. What is the difference between a hub and a switch? → A hub broadcasts to all ports; a switch forwards only to the destination port