Which switch port error is an indication of duplex mismatches on 10/100/1000 IEEE 802.3u  Gigabit Ethernet ports？（）

单项选择题faCiscoswitchisconfiguredwithVTPv1intransparentmode，whatisdonewithreceivedVTPadvertisements？（）

A.They are discarded
B.The contents are altered to reflect the switch’s own VTP database and then they are forward out  all trunking ports
C.The changes within the advertisements are made to the switch’s VTP database.
D.The contents are ignored and they are forwarded out all trunking ports.

单项选择题WhichIOSsecurityfeatureisconfiguredbytheipinspectinspection-name{in|out}command？（）

A.IPsec site-to-site VPN
B.Cisco AutoSecure
C.Cisco IOS Firewall
D.IPS

单项选择题InternetProtocolversion6（IPv6）isthenext-generationInternetLayerprotocolforpacket-switchedinternetworksandtheInternet.IPv6routersolicitationis（）

A.A request made by a node for the IP address of the local router
B.A request made by a node to join a specified multicast group
C.A request made by a node for a DHCP provided IP address
D.A request made by a node for the IP address of the DHCP server

单项选择题InwhichwaycantheIPv6addressof2031：0000：130F：0000：0000：09C0：876A：130Bbeexpressedmostefficiently？（）

A.2031：0：130F：0：0：09C0：876A：130B
B.2031：：130F：：9C0：876A：130B
C.2031：0：130F：：9C0：876A：130B
D.2031：0：130F：0：0：9C0：876A：130B

单项选择题Twodirectlyconnectedrouters，R1andR2，arebothconfiguredforOSPFgracefulrestart.R2isabletoswitchpacketsinhardware，butR1isnot.IfanetworkadministratorlogsontoR2andperformsasystemreload，whichwillbetheresult？（）

A.Traffic forwarded from R2 to or through R1 will continue to be forwarded based on the forwarding table state at the time of the reload.
B.R2 will continue to forward traffic to R1， but R1 will drop the traffic because its neighbor adjacency with R2 has failed.
C.R2 will continue forwarding traffic to and through R1， but R1 will drop this traffic because it is not capable of maintaining its forwarding state.
D.All the traffic R2 is forwarding to or through R1 will be dropped while OSPF rebuilds its neighbor adjacency and forwarding tables.