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Q61.  a network engineer is extending a LAN segment between two geographically separated data centers. Which enhancement to a spanning-tree design prevents unnecessary traffic

from crossing the extended LAN segment?

A. Modify the spanning-tree priorities to dictate the traffic flow.

B. Create a Layer 3 transit VLAN to segment the traffic between the sites.

C. Use VTP pruning on the trunk interfaces.

D. Configure manual trunk pruning between the two locations.

Answer: C


Q62. after configuring new data VLANs 1020 through 1030 on the VTP server, a network engineer notices that none of the VTP clients are receiving the updates. What is the problem?

A. The VTP server must be reloaded.

B. The VTP version number must be set to version 3.

C. After each update to the VTP server, it takes up to 4 hours propagate.

D. VTP must be stopped and restarted on the server.

E. Another switch in the domain has a higher revision number than the server.

Answer: B


Q63. The network manager has requested that several new VLANs (VLAN 10, 20, and 30) are allowed to traverse the switch trunk interface. After the command switchport trunk allowed vlan 10,20,30 is issued, all other existing VLANs no longer pass traffic over the trunk. What is the root cause of the problem?

A. The command effectively removed all other working VLANs and replaced them with the new VLANs.

B. VTP pruning removed all unused VLANs.

C. ISL was unable to encapsulate more than the already permitted VLANs across the trunk.

D. Allowing additional VLANs across the trunk introduced a loop in the network.

Answer: A


Q64. Which statement describes what happens when a port configured with root guard receives a superior BPDU?

A. The port goes into errdisabled state and stops forwarding traffic.

B. The port goes into BPDU-inconsistent state and stops forwarding traffic.

C. The port goes into loop-inconsistent state and stops forwarding traffic.

D. The port goes into root-inconsistent state and stops forwarding traffic.

Answer: D


Q65. A switch is added into the production network to increase port capacity. A network engineer is configuring the switch for DHCP snooping and IP Source Guard, but is unable to configure ip verify source under several of the interfaces. Which option is the cause of the problem?

A. The local DHCP server is disabled prior to enabling IP Source Guard.

B. The interfaces are configured as Layer 3 using the no switchport command.

C. No VLANs exist on the switch and/or the switch is configured in VTP transparent mode.

D. The switch is configured for sdm prefer routing as the switched database management template.

E. The configured SVIs on the switch have been removed for the associated interfaces.

Answer: B


Q66. A network engineer must implement Ethernet links that are capable of transporting frames and IP traffic for different broadcast domains that are mutually isolated. Consider that this is a multivendor environment. Which Cisco IOS switching feature can be used to achieve the task?

A. PPP encapsulation with a virtual template

B. Link Aggregation Protocol at the access layer

C. dot1q VLAN trunking

D. Inter-Switch Link

Answer: C


Q67. A manager tells the network engineer to permit only certain VLANs across a specific trunk interface. Which option can be configured to accomplish this?

A. allowed VLAN list

B. VTP pruning

C. VACL

D. L2P tunneling

Answer: A


Q68. An EtherChannel bundle has been established between a Cisco switch and a corporate web server. The network administrator noticed that only one of the EtherChannel links is being utilized to reach the web server. What should be done on the Cisco switch to allow for better EtherChannel utilization to the corporate web server?

A. Enable Cisco Express Forwarding to allow for more effective traffic sharing over the EtherChannel bundle.

B. Adjust the EtherChannel load-balancing method based on destination IP addresses.

C. Disable spanning tree on all interfaces that are participating in the EtherChannel bundle.

D. Use link-state tracking to allow for improved load balancing of traffic upon link failure to the server.

E. Adjust the EtherChannel load-balancing method based on source IP addresses.

Answer: E


Q69. A network engineer deployed a switch that operates the LAN base feature set and decides to use the SDM VLAN template. The SDM template is causing the CPU of the switch to

spike during peak working hours. What is the root cause of this issue?

A. The VLAN receives additional frames from neighboring switches.

B. The SDM VLAN template causes the MAC address-table to overflow.

C. The VLAN template disables routing in hardware.

D. The switch needs to be rebooted before the SDM template takes effect.

Answer: C


Q70. When two MST instances (MST 1 and MST 2) are created on a switch, what is the total number of spanning-tree instances running on the switch?

A. 1

B. 2

C. 3

D. 4

Answer: C