CompTIA Network+ Network+ Network Troubleshooting Methodology 3

Question 1

A technician suspects a duplex mismatch between a server NIC and a switch port. Which tool would BEST confirm this theory?

Accepted Answer

Switch port statistics / management interface

Answer

The switch management interface shows current duplex and speed settings on each port, allowing direct comparison with the server NIC settings.

Question 2

Users in one VLAN cannot communicate with users in another VLAN despite both VLANs being configured on the same switch. What is the MOST likely missing component?

Accepted Answer

An inter-VLAN routing device or Layer 3 switch

Answer

Inter-VLAN communication requires a router or Layer 3 switch to route traffic between VLANs; a Layer 2 switch alone cannot forward traffic across VLANs.

Question 3

A network technician receives multiple trouble tickets simultaneously. According to troubleshooting best practices, what should the technician do FIRST?

Accepted Answer

Prioritize tickets by severity and business impact

Answer

Prioritizing by severity and business impact ensures the most critical services are restored first, minimizing organizational disruption.

Question 4

Which command would a technician use on a Windows workstation to display the current IP configuration including default gateway?

Accepted Answer

ipconfig /all

Answer

ipconfig /all displays full IP configuration details including IP address, subnet mask, default gateway, and DNS servers.

Question 5

A technician establishes that a user's laptop has a valid IP address, correct subnet mask, and correct default gateway, but still cannot reach external websites. What should the technician check NEXT?

Accepted Answer

DNS server configuration

Answer

With correct IP, mask, and gateway, an inability to reach websites by name points to a DNS resolution failure.

CompTIA Practice Test

CompTIA Practice Test

CompTIA Network+ Network+ Network Troubleshooting Methodology 3