(Part 1) Modules 10 – 13: L2 Security and WLANs

Which Layer 2 attack will result in legitimate users not getting valid IP addresses?

• • ARP spoofing

• • DHCP starvation

• • IP address spoofing

• • MAC address flooding

What mitigation plan is best for thwarting a DoS attack that is creating a MAC address table overflow?

• • Disable DTP.

• • Disable STP.

• • Enable port security.

• • Place unused ports in an unused VLAN.

Which three Cisco products focus on endpoint security solutions? (Choose three.)

• • IPS Sensor Appliance

• • Web Security Appliance

• • Email Security Appliance

• • SSL/IPsec VPN Appliance

• • NAC Appliance

In the 802.1X standard, the client attempting to access the network is referred to as the supplicant.

• • true

• • false

Which authentication method stores usernames and passwords in the router and is ideal for small networks?

• • server-based AAA over TACACS+

• • local AAA over RADIUS

• • server-based AAA

• • local AAA over TACACS+

• • local AAA

What represents a best practice concerning discovery protocols such as CDP and LLDP on network devices?

• • Enable CDP on edge devices, and enable LLDP on interior devices.

• • Use the open standard LLDP rather than CDP.

• • Use the default router settings for CDP and LLDP.

• • Disable both protocols on all interfaces where they are not required.

Which protocol should be used to mitigate the vulnerability of using Telnet to remotely manage network devices?

• • SNMP

• • TFTP

• • SSH

• • SCP

Which statement describes the behavior of a switch when the MAC address table is full?

• • It treats frames as unknown unicast and floods all incoming frames to all ports on the switch.

• • It treats frames as unknown unicast and floods all incoming frames to all ports across multiple switches.

• • It treats frames as unknown unicast and floods all incoming frames to all ports within the local VLAN.

• • It treats frames as unknown unicast and floods all incoming frames to all ports within the collision domain.

What device is considered a supplicant during the 802.1X authentication process?

• • the router that is serving as the default gateway

• the authentication server that is performing client

• • the client that is requesting authentication

• • the switch that is controlling network access

Refer to the exhibit. Port Fa0/2 has already been configured appropriately. The IP phone and PC work properly. Which switch configuration would be most appropriate for port Fa0/2 if the network administrator has the following goals?

• • SWA(config-if)# switchport port-security
    SWA(config-if)# switchport port-security mac-address sticky

• • SWA(config-if)# switchport port-security
    SWA(config-if)# switchport port-security maximum 2
    SWA(config-if)# switchport port-security mac-address sticky
    SWA(config-if)# switchport port-security violation restrict

• • SWA(config-if)# switchport port-security mac-address sticky
    SWA(config-if)# switchport port-security maximum 2

• • SWA(config-if)# switchport port-security
    SWA(config-if)# switchport port-security maximum 2
    SWA(config-if)# switchport port-security mac-address sticky