Microsoft Networking Essentials Exam Research & Evidence-Based Practice 4

Question 1

Which evidence-based metric is most useful for diagnosing whether a network link is causing VoIP call quality degradation?

Accepted Answer

Jitter, latency, and packet loss measurements

Answer

Jitter, latency, and packet loss directly impact VoIP quality and are the specific metrics defined in ITU-T G.114 for voice quality evaluation.

Question 2

A technician uses 'pathping' in Windows to investigate a slow connection. What evidence does this tool combine compared to ping alone?

Accepted Answer

It combines traceroute hop mapping with per-hop packet loss and latency statistics

Answer

Pathping sends packets to each hop over a period and calculates statistics, providing evidence of both which hops exist and their specific loss and latency characteristics.

Question 3

When applying evidence-based practice to select a wireless channel, which data should a technician collect first?

Accepted Answer

A Wi-Fi spectrum analysis showing channel utilization by neighboring networks

Answer

Spectrum analysis reveals actual channel interference from neighboring networks, providing objective evidence to select the least congested channel.

Question 4

Which Windows event log channel is the primary evidence source when investigating failed network authentication attempts?

Accepted Answer

Security log

Answer

The Security log records authentication events including logon failures (Event ID 4625), making it the primary forensic evidence source for authentication investigation.

Question 5

In an evidence-based network design review, what does 'variance analysis' compare?

Accepted Answer

Actual measured network performance against the documented baseline or design targets

Answer

Variance analysis compares actual performance measurements against the baseline or design targets to quantify the gap and identify areas needing remediation.

Microsoft Networking Essentials Exam Practice Test

Microsoft Networking Essentials Exam Practice Test

Microsoft Networking Essentials Exam Research & Evidence-Based Practice 4