Wireless Sec & Privacy

A network administrator issues the show vlan brief command while troubleshooting a user support ticket. What output will be displayed?

the VLAN assignment and membership for all switch ports

a. Which two statements are correct with respect to SVI inter-VLAN routing?

a. Switching packets is faster with SVI.

b. Which two statements are correct with respect to SVI inter-VLAN routing?

b. There is no need for a connection to a router.

Which solution would help a college alleviate network congestion due to collisions?

a high port density switch

If one end of an Ethernet connection is configured for full duplex and the other end of the connection is configured for half duplex, where would late collisions be observed?

on the half-duplex end of the connection

Which command displays information about the auto-MDIX setting for a specific interface?

show controllers

Which characteristic describes cut-through switching?

Frames are forwarded without any error checking.

How do switch buffers affect network performance?

They store frames received, thus preventing premature frame discarding when network congestion occurs.

Which impact does adding a Layer 2 switch have on a network?

an increase in the size of the broadcast domain

a. Which two characteristics describe the native VLAN?

a. The native VLAN traffic will be untagged across the trunk link.

b. Which two characteristics describe the native VLAN?

b. The native VLAN provides a common identifier to both ends of a trunk.

a. Which four steps are needed to configure a voice VLAN on a switch port?

a. Assign the voice VLAN to the switch port.

b. Which four steps are needed to configure a voice VLAN on a switch port?

b. Ensure that voice traffic is trusted and tagged with a CoS priority value.

c. Which four steps are needed to configure a voice VLAN on a switch port?

c. Add a voice VLAN.

d. Which four steps are needed to configure a voice VLAN on a switch port?

d. Configure the switch port in access mode.

A network contains multiple VLANs spanning multiple switches. What happens when a device in VLAN 20 sends a broadcast Ethernet frame?

Only devices in VLAN 20 see the frame.

A technician is configuring a new Cisco 2960 switch. What is the effect of issuing the BranchSw(config-if)# ip address 172.18.33.88 255.255.255.0 command?

It applies an IPv4 address to the virtual interface.

What type of VLAN supports untagged traffic?

native VLAN

Which type of VLAN is used to designate which traffic is untagged when crossing a trunk port?

native

a. What are two drawbacks to turning spanning tree off and having multiple paths through the Layer 2 switch network?

a. The MAC address table becomes unstable.

b. What are two drawbacks to turning spanning tree off and having multiple paths through the Layer 2 switch network?

b. Broadcast frames are transmitted indefinitely.

a. When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which two port roles could these interfaces function while in the forwarding state?

a. designated

b. When the show spanning-tree vlan 33 command is issued on a switch, three ports are shown in the forwarding state. In which two port roles could these interfaces function while in the forwarding state?

b. root

Which protocol provides up to 16 instances of RSTP, combines many VLANs with the same physical and logical topology into a common RSTP instance, and provides support for PortFast, BPDU guard, BPDU filter, root guard, and loop guard?

MST

Which port role is assigned to the switch port that has the lowest cost to reach the root bridge?

root port

What is the value used to determine which port on a non-root bridge will become a root port in a STP network?

the path cost

What is a characteristic of spanning tree?

It is enabled by default on Cisco switches.

a. In which two PVST+ port states are MAC addresses learned?

a. learning

b. In which two PVST+ port states are MAC addresses learned?

b. forwarding

a. In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network?

a. forwarding

b. In which two port states does a switch learn MAC addresses and process BPDUs in a PVST network?

b. learning

Which mode configuration setting would allow formation of an EtherChannel link between switches SW1 and SW2 without sending negotiation traffic?

SW1: on
SW2: on

a. What are two advantages of EtherChannel?

a. Spanning Tree Protocol views the physical links in an EtherChannel as one logical connection.

b. What are two advantages of EtherChannel?

b. Configuring the EtherChannel interface provides consistency in the configuration of the physical links.

What is a requirement to configure a trunking EtherChannel between two switches?

The allowed range of VLANs must be the same on both switches.

Which technology is an open protocol standard that allows switches to automatically bundle physical ports into a single logical link?

LACP

a. What are two requirements to be able to configure an EtherChannel between two switches?

a. All the interfaces need to work at the same speed.

b. What are two requirements to be able to configure an EtherChannel between two switches?

b. All the interfaces need to be working in the same duplex mode.

When EtherChannel is configured, which mode will force an interface into a port channel without exchanging aggregation protocol packets?

on

A network administrator configured an EtherChannel link with three interfaces between two switches. What is the result if one of the three interfaces is down?

The remaining two interfaces continue to load balance traffic.

A switch is configured to run STP. What term describes a field used to specify a VLAN ID?

extended system ID