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Cisco Implementing Cisco IP Switched Networks Sample Questions:

1. What does the global configuration command ip arp inspection vlan 10-12, 15 accomplish?

A) intercepts, logs, and discards ARP packets with invalid IP-to-MAC address bindings
B) intercepts all ARP requests and responses on trusted ports
C) validates outgoing ARP requests for interfaces configured on VLAN 10, 11, 12, or 15
D) discards ARP packets with invalid IP-to-MAC address bindings on trusted ports

2. Observe the topology in the exhibit.

HSRP is configured between RTB and RTC with RTC as the active router. SW2 is configured as the root bridge for the Spanning Tree Protocol. What will happen if the serial connection on RTC is down?

A) All traffic will automatically forward to RTB.
B) SW3 will take over as the new root bridge.
C) RTB and RTC will flap between active and standby because the timers for STP are greater than the timers for HSRP.
D) STP will not need to be recalculated because RTB will take over as active router.

3. What is the effect of applying the switchport trunk encapsulation dot1q command to a port on a Cisco Catalyst switch?

A) Without an encapsulation command, 802.1Q is the default encapsulation if DTP fails to negotiate a trunking protocol.
B) If the device connected to this port is not 802.1Q-enabled, it is unable to handle 802.1Q packets.
C) The interface supports the reception of tagged and untagged traffic.
D) By default, native VLAN packets going out this port are tagged.

4. Which optional feature of an Ethernet switch disables a port on a point-to-point link if the port does not receive traffic while Layer 1 status is up?

A) UDLD aggressive mode
B) BackboneFast
C) Loop Guard
D) UplinkFast
E) Link Control Word
F) Fast Link Pulse bursts

5. Which statement best describes implementing a Layer 3 EtherChannel?

A) A Layer 3 address is assigned to the physical interface.
B) Implementation requires switchport mode trunk and matching parameters between switches.
C) Implementation requires disabling switchport mode.
D) EtherChannel is a Layer 2 feature and not a Layer 3 feature.

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