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多项选择题

DHCP snooping on Cisco Nexus 1000V Series Switches acts like a firewall between untrusted hosts and trusted DHCP servers by doing which of these？ （）

A. validates DHCP messages received from untrusted sources and filters out invalid response messages from DHCP servers
B. intercepts all ARP requests and responses on untrusted ports
C. builds and maintains the DHCP snooping binding database， which contains information about untrusted hosts with leased IP addresses
D. uses the DHCP snooping binding database to validate subsequent requests from untrusted hosts
E. limits IP traffic on an interface to only those sources that have an IP-MAC address binding table entry or static IP source entry

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热门试题

单项选择题A Cisco switch has this configuration for a port channel connecting to an ESXi using dual NICs and is intended for use with an N1Kv.  Interface fastethernet 1 10  Switchport mode trunk  Switchport trunk allowed vlan all  Channel-group 10 mode on  No shut  Interface fastethernet 1 11   Switchport mode trunk  Switchport trunk allowed vlan all  Channel-group 10 mode on  No shut  Interface port-channel 10   Switchport mode trunk  Switchport allowed vlan all No shut  Which Port Channel configuration must be used on the Nexus 1000v port-profile？（）

A. MAC pinning
B. Cisco Discovery Protocol pinning
C. Mode On
D. Mode Active
E. No port channel configuration

多项选择题WhatarethefourvPathpacketflowsteps？（）

A. perform flow lookups
B. intercept packets on service enabled ports
C. run packets through the vPath flow manager
D. classify the packets
E. flow manager emits an action for the packets
F. enforce the action determined by the flow manager

单项选择题Given the following configuration， what command can be used to determine the physical path that traffic will be sent out upon？（）  Port-profile type Ethernet name vm-data   Switchport mode trunk  Switchport trunk allowed vlan 200-210   Channel-group auto mode on mac-pinning   State enabled  Vmware port-group  No shut  Port-profile type vethernet name vlan-200   Switchport mode access  Switchport vlan 200   State enabled Vmware port-group No shut

A. module vem X execute vemcmd show trunk
B. show module 3 internal pinning
C. module vem X execute vemcmd show port
D. show module vem mapping
E. show interface vethX pinning

单项选择题WhenusingVSD，trafficflowgoesfromthevirtualmachinetowhichofthese？（）

A. Upstream switch
B. Virtual Supervisor Module
C. VMware distributed switch
D. VMware vSwitch
E. Service virtual machine

单项选择题heCiscoNexus1000VSeriesSwitchesarevirtualmachineaccessswitchesthatareanintelligentsoftwareswitchimplementationforVMwarevSphereenvironmentsrunningtheCiscoNX-OSSoftwareoperatingsystem.TogetherwiththeVMwareESXhypervisor，theNexus1000VsupportsCiscoVN-Linkservervirtualizationtechnology，whichprovidesmobilevirtualmachinesecurityandnetworkpolicyforVMwareViewcomponents，includingtheDHCPsnoopingfeature.DHCPsnoopingisdisabledontheNexus1000Vbydefault.WhentheDHCPsnoopingfeatureisenabledontheNexus1000V，whatarethedefaulttrustsettingsforthevEthernetanduplinkports？（）

A. All vEthernet ports are trusted， and all Ethernet ports such as uplinks and port channels are trusted.
B. All vEthernet ports are not trusted， and all Ethernet ports such as uplinks and port channels are not trusted.
C. All vEthernet ports are trusted and all Ethernet ports such as uplinks and port channels are not trusted.
D. All vEthernet ports are not trusted and all Ethernet ports such as uplinks and port channels are trusted.