Online Access Free 642-813 Exam Questions

The DAI feature has been implemented in the ACME switched LAN. Which three statements are true about the dynamic ARP inspection (DAI) feature? (Select three)

• A.DAI is supported on access and trunk ports only.
• B.DAI should be configured on all access switch ports as untrusted and on all switch ports connected to other switches as trusted.
• C.DAI can be performed on ingress ports only.
• D.DAI is supported on access ports, trunk ports, EtherChannel ports, and private VLAN ports.
• E.DAI can be performed on both ingress and egress ports.
• F.DAI should be enabled on the root switch for particular VLANs only in order to secure the ARP caches of hosts in the domain.

Static VLANs are being used on the Cisco network. What is true about static VLANs?

• A.Attached devices are unaware of any VLANs.
• B.Devices use DHCP to request their VLAN.
• C.Devices are in the same VLAN regardless of which port they attach to.
• D.Devices are assigned to VLANs based on their MAC addresses.

Which two statements correctly describe VTP? (Choose two.)

• A.Server mode can synchronize across VTP domains.
• B.Client mode synchronizes its VLAN database from VTP advertisements.
• C.Transparent mode always has a configuration revision number of 0.
• D.Transparent mode cannot modify a VLAN database.
• E.Client mode cannot forward received VTP advertisements.

When an attacker is using switch spoofing to perform VLAN hopping, how is the attacker able to gather information?

• A.The attacking station generates frames with two 802.1Q headers to cause the switch to forward the frames to a VLAN that would be inaccessible to the attacker through legitimate means.
• B.The attacking station uses DTP to negotiate trunking with a switch port and captures all traffic that is allowed on the trunk.
• C.The attacking station tags itself with all usable VLANs to capture data that is passed through the switch, regardless of the VLAN to which the data belongs.
• D.The attacking station uses VTP to collect VLAN information that is sent out and then tags itself with the domain information to capture the data.

Which statement correctly describes the Cisco implementation of RSTP?

• A.PortFast, UplinkFast, and BackboneFast specific configurations are ignored in Rapid PVST mode.
• B.Convergence is improved by using subsecond timers for the blocking, listening, learning, and forwarding port states.
• C.RSTP is enabled globally and uses existing STP configuration.
• D.Root and alternative ports transition immediately to the forwarding state.