OD41

9 November 2025

CompTIA Network+: Solving Networking Issues

 

Question:

You are troubleshooting network connectivity issues and wish to examine the routing table on one of your routers.

 

What command do you issue?

  • Sh ip route


Question

:

One of your network users is experiencing network transmission issues. You suspect that the workstation may be connected to the incorrect port on the switch. You have the physical address of the workstation. 

 

What command will show you to which port the workstation is connected?

  • Sh mac-address-table


Question

:

Your network contains several IP phones which are powered over the ethernet cabling. You want to check the total power consumption these phones are using on your network switch.

 

Which command will show the total power consumption for all the phones connected to the switch?

  • Sh power inline


Question

:

Your network is experiencing congestion and you need to examine a sample of the data stream. You required a GUI-based protocol analyzer that is open-source.

 

What product will fulfill these requirements?

  • WireShark


Question

:

Your network is experiencing slowdowns and you suspect that one of the connections on the router is experiencing heavy loads. 

 

What command will show the receive and transmit loads on the router’s connections?

  • Sh interfaces


Question

:

Your organization is currently using a Linux server for its web service. Using the command line, you wish to use a command to examine records on the DNS server in the network.

 

Which command-line utility meets these requirements?

  • Dig


Question

:

You want to check the configuration file that the router uses when it boots.

 

Which command do you use?

  • Sh startup-config


Question

:

Your organization has subdivided the network into virtual local area networks on the switches. One of the employees is not able to communicate with their colleagues. You suspect that the workstation may be connected to a port in the incorrect virtual network. 

 

What command will show you all the ports on the switch and to which virtual network they are connected?

  • sh vlan


Question
:

You’ve configured your network for resilience by creating redundant paths for data. You want to test a packet stream through the network to ensure the data is travelling the route you intended with your configuration. 

 

Which command fulfills your requirements?

  • Tracert


Question

:

You have been examining traffic in the network and have noticed that one computer has been creating a lot of broadcast traffic. You have the IP of the device but need the mac address. 

 

Which command do you use?

  • arp


Question

:

You work at an organization as a network administrator and your networking team has been creating patch cables for a new installation of computers. You need to test each patch cable for any errors like missed pins or crossed connections.

 

Which hardware network tool do you require?

  • Cable tester