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QUESTION 45
Refer to the exhibit.
What happens to traffic within VLAN 14 with a source address of 172.16.10.5?
A. The traffic is forwarded to the TCAM for further processing.
B. The traffic is forwarded to the router processor for further processing.
C. The traffic is dropped.
D. The traffic is forwarded without further processing.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: VLAN maps, also known as VLAN ACLs or VACLs, can filter all traffic traversing a switch. VLAN maps can be configured on the switch to filter all packets that are routed into or out of a VLAN, or are bridged within a VLAN. VLAN maps are used strictly for security packet filtering. Unlike router ACLs, VLAN maps are not defined by direction (input or output).
To create a VLAN map and apply it to one or more VLANs, perform these steps: · Create the standard or extended IP ACLs or named MAC extended ACLs to be applied to the VLAN. This access-list will select the traffic that will be either forwarded or dropped by the access- map. Only traffic matching the `permit’ condition in an access-list will be passed to the access-map for further processing. · Enter the vlan access-map access-map-name [sequence] global configuration command to create a VLAN ACL map entry. Each access-map can have multiple entries. The order of these entries is determined by the sequence. If no sequence number is entered, access-map entries are added with sequence numbers in increments of 10. · In access map configuration mode, optionally enter an action forward or action drop. The default is to forward traffic. Also enter the match command to specify an IP packet or a non-IP packet (with only a known MAC address), and to match the packet against one or more ACLs (standard or extended). · Use the vlan filter access-map-name vlan-list vlan-list global configuration command to apply a VLAN map to one or more VLANs. A single access-map can be used on multiple VLANs.
QUESTION 46
Which protocol allows for the automatic selection and simultaneous use of multiple available gateways as well as automatic failover between those gateways?
A. IRDP
B. HSRP
C. GLBP D. VRRP
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: To provide a virtual router, multiple switches (routers) are assigned to a common GLBP group. Rather than having just one active router performing forwarding for the virtual router address, all routers in the group can participate and offer load balancing by forwarding a portion of the overall traffic. The advantage is that none of the clients have to be pointed toward a specific gateway address–they can all have the same default gateway set to the virtual router IP address. The load balancing is provided completely through the use of virtual router MAC addresses in ARP replies returned to the clients. As a client sends an ARP request looking for the virtual router address, GLBP sends back an ARP reply with the virtual MAC address of a selected router in the group. The result is that all clients use the same gateway address but have differing MAC addresses for it.
QUESTION 47
When you create a network implementation for a VLAN solution, what is one procedure that you should include in your plan?
A. Perform an incremental implementation of components.
B. Implement the entire solution and then test end-to-end to make sure that it is performing as designed.
C. Implement trunking of all VLANs to ensure that traffic is crossing the network as needed before performing any pruning of VLANs.
D. Test the solution on the production network in off hours.
Correct Answer: A Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 48
You have just created a new VLAN on your network. What is one step that you should include in your VLAN-based implementation and verification plan?
A. Verify that different native VLANs exist between two switches for security purposes.
B. Verify that the VLAN was added on all switches with the use of the show vlan command.
C. Verify that the switch is configured to allow for trunking on the switch ports.
D. Verify that each switch port has the correct IP address space assigned to it for the new VLAN.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 49
Which two statements describe a routed switch port on a multilayer switch? (Choose two.)
A. Layer 2 switching and Layer 3 routing are mutually supported.
B. The port is not associated with any VLAN.
C. The routed switch port supports VLAN subinterfaces.
D. The routed switch port is used when a switch has only one port per VLAN or subnet.
E. The routed switch port ensures that STP remains in the forwarding state.
Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 50
Which two statements correctly describe VTP? (Choose two.)
A. Transparent mode always has a configuration revision number of 0.
B. Transparent mode cannot modify a VLAN database.
C. Client mode cannot forward received VTP advertisements.
D. Client mode synchronizes its VLAN database from VTP advertisements.
E. Server mode can synchronize across VTP domains.
Correct Answer: AD Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 51
Which two DTP modes permit trunking between directly connected switches? (Choose two.)
A. dynamic desirable (VTP domain A) to dynamic desirable (VTP domain A)
B. dynamic desirable (VTP domain A) to dynamic desirable (VTP domain B)
C. dynamic auto (VTP domain A) to dynamic auto (VTP domain A)
D. dynamic auto (VTP domain A) to dynamic auto (VTP domain B)
E. dynamic auto (VTP domain A) to nonegotiate (VTP domain A)
F. nonegotiate (VTP domain A) to nonegotiate (VTP domain B)
Correct Answer: AF Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 52
Which two RSTP port roles include the port as part of the active topology? (Choose two.)
A. root
B. designated
C. alternate
D. backup
E. forwarding
F. learning
Correct Answer: AB Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 53
Which two statements correctly describe characteristics of the PortFast feature? (Choose two.)
A. STP is disabled on the port.
B. PortFast can also be configured on trunk ports.
C. PortFast is needed to enable port-based BPDU guard.
D. PortFast is used for STP and RSTP host ports.
E. PortFast is used for STP-only host ports.
Correct Answer: BD Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 54
Which statement correctly describes the Cisco implementation of RSTP?
A. PortFast, UplinkFast, and BackboneFast specific configurations are ignored in Rapid PVST mode.
B. RSTP is enabled globally and uses existing STP configuration.
C. Root and alternative ports transition immediately to the forwarding state.
D. Convergence is improved by using subsecond timers for the blocking, listening, learning, and forwarding port states.
Correct Answer: B Section: (none) Explanation
Explanation/Reference:
Explanation:
QUESTION 55
What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch?
A. By default, native VLAN packets going out this port are tagged.
B. Without an encapsulation command, 802.1Q is the default encapsulation if DTP fails to negotiate a trunking protocol.
C. The interface supports the reception of tagged and untagged traffic.
D. If the device connected to this port is not 802.1Q-enabled, it is unable to handle 802.1Q packets.
Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation:
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