Microsoft Networking Essentials Exam Network Security & Troubleshooting 2 — Questions and Answers
Question 1: What does the tracert (traceroute) command show on a Windows system?
- Active network connections
- The path and latency from source to destination across network hops (Correct answer)
- DNS resolution results
- Routing table contents
Correct answer: The path and latency from source to destination across network hops
The tracert command traces the route packets take from the source to the destination, showing each hop (router) along the path and the latency to each hop.
Question 2: Which wireless encryption protocol is considered the most secure for modern Wi-Fi networks?
- WEP
- WPA
- WPA2-Personal
- WPA3 (Correct answer)
Correct answer: WPA3
WPA3 is the most current and secure Wi-Fi encryption standard, providing stronger protections against password attacks and improved encryption compared to WPA2.
Question 3: A user cannot connect to the internet but can ping 127.0.0.1 successfully. What does this indicate?
- The network cable is unplugged
- The TCP/IP stack is functioning but there may be a network or DNS issue (Correct answer)
- The firewall is blocking all traffic
- The NIC is faulty
Correct answer: The TCP/IP stack is functioning but there may be a network or DNS issue
Successfully pinging 127.0.0.1 (loopback address) confirms the local TCP/IP stack is installed and working, suggesting the issue is with the network connection, router, or DNS rather than the local TCP/IP configuration.
Question 4: What is a common symptom of a duplicate IP address conflict on a network?
- Slow internet speeds only
- Intermittent loss of network connectivity on the affected devices (Correct answer)
- Complete network failure for all devices
- DNS resolution failures only
Correct answer: Intermittent loss of network connectivity on the affected devices
When two devices share the same IP address, both devices experience intermittent connectivity as the network alternates between recognizing one or the other, causing unpredictable network disruptions.
Question 5: What is the purpose of 802.1X authentication in a network?
- Encrypt wireless data transmissions
- Provide port-based network access control requiring authentication before granting access (Correct answer)
- Assign VLAN membership automatically
- Monitor network traffic for intrusions
Correct answer: Provide port-based network access control requiring authentication before granting access
IEEE 802.1X provides port-based network access control, requiring devices to authenticate (typically via RADIUS) before being granted access to the network.
Question 6: Which tool can be used to capture and analyze network packets for troubleshooting?
- ipconfig
- ping
- Wireshark (Correct answer)
- netstat
Correct answer: Wireshark
Wireshark is a network protocol analyzer that captures and displays network packets in detail, making it an essential tool for network troubleshooting and analysis.
Microsoft Networking Essentials Exam Network Security & Troubleshooting 2
What does the tracert (traceroute) command show on a Windows system?