單項選擇題f a Cisco switch is configured with VTPv1 in transparent mode， what is done with received VTP advertisements？（）

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.


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1.單項選擇題Which IOS security feature is configured by the ip inspect inspection-name {in | out} command？（）

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

2.單項選擇題Internet Protocol version 6 （IPv6） is the next-generation Internet Layer protocol for packet-switched internetworks and the Internet. IPv6 router solicitation is（）

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

3.單項選擇題In which way can the IPv6 address of 2031：0000：130F：0000：0000：09C0：876A：130B be expressed most efficiently？（）

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

4.單項選擇題Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）

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.

5.單項選擇題As a network administrator， can you tell me what the root guard feature provides in a bridgednetwork？（）

A.It ensures that BPDUs sent by the root bridge are forwarded in a timely manner
B.It enforces the root bridge placement in the network
C.It ensures that all ports receiving BPDUs from the root bridge are in the forwarding state.
D.It ensures that the bridge is elected as root bridge in the network.

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