Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?
What is the function of the command "switchport trunk native vlan 999" on a Cisco Catalyst switch?
It designates VLAN 999 for untagged traffic.
Which port state is introduced by Rapid-PVST?
A network administrator creates a layer 3 EtherChannel, bundling four interfaces into channel group 1. On what interface is the IP address configured?
the port-channel 1 interface
A workgroup switch is configured with all ports assigned to VLAN2. In addition, all ports are configured as full-duplex FastEthernet. What is the effect of adding switch ports to a new VLAN on this switch?
An additional broadcast domain will be created.
Which three elements must be used when you configure a router interface for vlan trunking?
One IP network or subnetwork for each subinterface. Subinterface encapsulation identifiers that match vlan tags. One subinterface per vlan.
In which circumstance are multiple copies of the same unicast frame likely to be transmitted in a switched LAN?
in an improperly implemented redundant topology
What are the advantages of using VLANs?
They allow logical grouping of users by function. They can enhance network security. They increase the number of broadcast domains while decreasing the size of the broadcast domains.
makes up a switched network that is logically segmented by functions, project teams, or applications, without regard to the physical location of users.
Which three statements about RSTP are true?
RSTP significantly reduces topology reconverging time after a link failure. RSTP expands the STP port roles by adding the alternate and backup roles. RSTP provides a faster transition to the forwarding state on point-to-point links than STP
A router has two FastEthernet interfaces and needs to connect to four vlans in the local network. How can you accomplish this task, using the fewest physical interfaces and without decreasing network performance?
Implement a router-on-a-stick configuration.
Three switches are connected to one another via trunk ports. Assuming the default switch configuration, which switch is elected as the root bridge for the spanning-tree instance of VLAN 1?
Which three of these statements regarding 802.1Q trunking are correct?
802.1Q native VLAN frames are untagged by default. 802.1Q trunks can use 10 Mb/s Ethernet interfaces. 802.1Q trunks should have native VLANs that are the same at both ends.
Which three statements accurately describe layer 2 Ethernet switches?
Microsegmentation decreases the number of collisions on the network. In a properly functioning network with redundant switched paths, each switched segment will contain one root bridge with all its ports in the forwarding state. All other switches in that broadcast domain will have only one root port. Establishing vlans increases the number of broadcast domains.
Which IEEE standard protocol is initiated as a result of successful DTP completion in a switch over FastEthernet?
Which two of these statements regarding RSTP are correct?
RSTP defines new port roles. RSTP is compatible with the original IEEE 802.1D STP.
Rapid Spanning Tree Protocol
significantly reduces the time to reconverge the active topology of the network when changes to the physical topology or its configuration parameters occur.
Which two states are the port states when RSTP has converged?
RSTP port states
discarding, learning, forwarding.
When RSTP has converged
every port is either in discarding state or in forwarding state.
Which two link protocols are used to carry multiple VLANs over a single link?
What are three benefits of implementing VLANs?
A higher level of network security can be reached by separating sensitive data traffic from other network traffic. A more efficient use of bandwidth can be achieved allowing many logical networks to use the same network infrastructure. Broadcast storms can be mitigated by increasing the number of broadcast domains, thus reducing their size.
When PVST+ is in work on VLAN1 of the switch, what will affect on selection of one of the switches in the VLAN as root-bridge?
implements the 802.1d IEEE algorithm by exchanging BPDU messages with other switches to detect loops, and then removes the loop by shutting down selected bridge interfaces.
What are three advantages of VLANs?
VLANs establish broadcast domains in switched networks. VLANs allow access to network services based on department, not physical location. VLANs can greatly simplify adding, moving, or changing hosts on the network.
Which three statements are typical characteristics of VLAN arrangements?
Connectivity between VLANs requires a Layer 3 device. Each VLAN uses a separate address space. A switch maintains a separate bridging table for each VLAN
VLAN 3 is not yet configured on your switch. What happens if you set the switchport access vlan 3 command in interface configuration mode?
The command is accepted and the respective VLAN is added to lan.dat.
At which layer of the OSI model is RSTP used to prevent loops?
Which two commands can be used to verify a trunk link configurationt status on a given cisco switch?
show interfaces interface trunk show interfaces interface switchport
show interfaces trunk
will list all the interfaces that are currently trunking
show interfaces switchport
will show you the operational and administrative mode of each interface.
Switch ports operating in which two roles will forward traffic according to the IEEE 802.1w standard?
Which term describes a spanning-tree network that has all switch ports in either the blocking or forwarding state?
What are two characteristics of a switch that is configured as a VTP client?
The local vlan configuration is updated only when an update that has a higher configuration revision number is received. When switches in VTP client mode are rebooted, they send a VTP advertisement request to the VTP servers.
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