6.7 Switch Troubleshooting
Select the statement that best describes a broadcast storm.
A broadcast storm occurs when there are so many broadcast messages on the network that they approach or exceed the network bandwidth.
You manage a network with a single switch. On each switch port, hub connects multiple devices to the switch. Which condition are you most likely to experience on the network?
Collisions
A user reports that network access from her workstation is very slow. The problem does not seem to be affecting any other users. Which of the following conditions is the most likely cause?
Duplex mismatch
You manage a network with multiple switches. You find that your switches are experiencing heavy broadcast storms. Which of the following will help reduce the effects of a broadcast storm?
Enable spanning tree on the switches.
You manage a local area network with several switches. A new employee has started today so you connect her workstation to a switch port. After connecting the workstation, you find that the workstation cannot get an IP address from the DHCP server. You check the link and status lights and the connection is working properly. A ping to the loopback address on the workstation succeeds. No other computers seem to have the problem. Which of the following is the most likely cause of the problem?
Incorrect VLAN assignment
Which of the following solutions would you implement to eliminate switching loops?
Spanning tree
Which of the following solutions would you implement to eliminate switching loops?
Spanning-tree
You manage a network that uses multiple switches. You want to provide multiple paths between switches so that if one link goes down, an alternate path is available. Which feature should your switch support?
Spanning-tree
You manage a single subnet with three switches. The switches are connected to provide redundant paths between the switches. Which feature prevents switching loops and ensures there is only a single active path between any two switches?
Spanning-tree
While viewing the status of the interfaces on a Cisco switch, you see an abnormally large number of oversized Ethernet frames being received on one interface. The interface is connected to a workstation located on the 2nd floor. What could be causing this to happen?
The workstation's network board is jabbering.
You run a small network for your business that has a single router connected to the Internet and a single switch. You keep sensitive documents on a computer that you would like to keep isolated from other computers on the network. Other hosts on the network should not be able to communicate with this computer through the switch, but you still need to access the network through the computer. What should you use for this situation?
VLAN
You manage a network that uses a single switch. All ports within your building connect through the single switch. In the lobby of your building are three RJ-45 ports connected to the switch. You want to allow visitors to plug into these ports to gain Internet access, but they should not have access to any other devices on your private network. Employees connected throughout the rest of your building should have both private and Internet access. Which feature should you implement?
VLANs
The network board in a workstation is currently configured as follows: -Network speed = Auto -Duplexing = Auto The workstation is experiencing poor network performance and you suspect that the network board is not correctly detecting the network speed and duplex settings. Upon investigation, you find that it is running at 10 Mbps half-duplex. You know that your network switch is capable of much faster throughput. To fix this issue, you decide to manually configure these settings on the workstation. Before you do so, you need to verify the configuration of the switch port that the workstation is connected to. Given that it is a Cisco switch, which commands can be used on the switch to show a list of all switch ports and their current settings?
show running-config interface show interface
