Microsoft Networking Essentials Exam Quality Control & Assurance 4

Question 1

Which Windows Performance Monitor counter is most useful for monitoring network quality?

Accepted Answer

Network Interface\Packets/sec

Answer

The Network Interface Packets/sec counter reveals traffic volume and can expose abnormal network activity.

Question 2

What is the function of a network protocol analyzer in quality assurance?

Accepted Answer

Capturing and inspecting packet data to diagnose problems

Answer

A protocol analyzer (like Wireshark) captures packets for detailed inspection to identify errors, delays, and anomalies.

Question 3

A technician suspects a duplex mismatch between a switch and a server NIC. What symptom would confirm this?

Accepted Answer

High late collisions and poor throughput

Answer

Duplex mismatches cause late collisions and significantly reduced throughput because one side operates half-duplex.

Question 4

Which IP header field is used to prevent packets from circulating indefinitely on a network?

Accepted Answer

TTL (Time to Live)

Answer

The TTL field decrements at each hop; when it reaches zero the packet is discarded, preventing routing loops.

Question 5

What does the 'netstat -e' command display that is useful for quality assurance?

Accepted Answer

Ethernet statistics including errors and discards

Answer

Netstat -e shows Ethernet statistics such as bytes sent/received, errors, and discarded packets for quality assessment.

Microsoft Networking Essentials Exam Practice Test