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READ Free Dumps For Cisco- 640-554





Question ID 22143

What can be used as a VPN gateway when setting up a site-to-site VPN?

Option A

Cisco Catalyst switch

Option B

Cisco router

Option C

Cisco Unified Communications Manager

Option D

Cisco AnyConnect

Correct Answer B
Explanation


Question ID 22144

Which type of Layer 2 attack makes a host appear as the root bridge for a LAN?

Option A

LAN storm

Option B

MAC address spoofing

Option C

MAC address table overflow

Option D

STP manipulation

Option E

VLAN attack

Correct Answer D
Explanation STP is a Layer 2 protocol that ensures a loop-free topology. STP operates by electing a root bridge and building a tree topology from that root. STP allows for redundancy, but at the same time, ensures that only one link is operational at a time and no loops are present. Network attackers can manipulate STP to conduct an attack by changing the topology of a network. An attacker can make it appear that the attacking host is a root bridge, thereby spoofing the root bridge. All traffic for the immediate switched domain then passes through the rogue root bridge (the attacking system).

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