Chapter 6 pt. 2

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

Which statements accurately describe the port states of both Bridges and Switches in the listening state?

All ports are blocked.

A switch running STP is classified as a backup bridge. What state is it in?

Blocking

On a single switch network, a hub connects multiple devices to each switchport. What condition are you most likely to experience on the network?

Collisions

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, how can your force Switch C to become a root bridge?

Configure a priority number of 4096 for switch C

You need to configure spanning tree on a Cisco switch. You'd like to use a protocol that conforms to the 802.1w standards. Which protocol should you use?

Rapid PVST+

You have three switches as shown in Exhibit. How can you guarantee that switch C becomes the root bridge?

Configure switch C with a lower port priority value.

Port Aggregation Protocol (PAgP)

Desirable mode places the port in a negotiating state, and Auto mode places the port in a passive negotiating state.

A user reports that network access from her workstation is very slow. The problem does not seem to be affecting any other users. Which condition is most likely the cause?

Duplex mismatch

What does spanning tree do to prevent switching loops?

Dynamically placing switch ports in blocking or forwarding states.

On a network with multiple switches, heavy broadcast storms become a prevalent issue. Which of the following will help reduce the effects of a broadcast storm?

Enable spanning tree on the switches.

A new employee has started today, so you connect her workstation to a switchport. After connecting the workstation, you find that the workstation cannot get an IP address from the DHCP server. The link and status lights are on, and a ping to the loopback address succeeds. What is the most likely cause of the problem?

Incorrect VLAN assignment

A switch running STP is in the learning state. A message destined for a different network segment arrives at the switch. Which of the following best describes what the switch will do?

It does not record address or segment information. It does not forward the message.

A switch is running STP is in the learning state. A message destined for a different network segment arrives at the switch. Which of the following best describes what the switch will do?

It uses the source MAC address and network segment information to build its bridge database, but does not forward the message.

Switches running STP are in the process of exchanging BPDUs and redefining their roles. Which port state are the switches currently in?

Listening

Link Aggregation Control Protocol (LACP)

Passive mode places the port in a passive negotiating state, and Active mode places the port in a negotiating state. Based on the 802.3ad standard.

Which statements accurately describe the port states of both Bridges and Switches in the blocked state?

Ports still receive BPDUs, but do not forward frames.

What feature prevents switching loops and ensures there is only a single active path between any two switches?

Spanning tree

You have just connected four switches as shown in the Exhibit. Assuming the default switch configuration, which switch will become the root bridge?

Switch B ; the switch with the lowest bridge ID becomes the root bridge.

Which problem does the spanning tree protocol prevent?

Switching loops from developing when redundant paths are implemented between switches.

Which statements accurately describe the port states of both Bridges and Switches in the learning state?

The MAC address table can be populated, but frames are not forwarded.

While viewing the status of the interfaces on a Cisco switch, you see an abnormally large number of CRC errors on one interface. This interface is connected to a user's workstation on the 2nd floor. What could be causing this to happen?

The workstation's network board is jabbering.

You want visitors to be able to use the switch ports to gain both private and internet access, What feature should you implement?

VLAN

What is a broadcast storm?

When there are so many broadcast messages on the network that they approach or exceed the network bandwidth.

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


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