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多选题
You need to configure a GRE tunnel on a IPSec router. When you are using the SDM to configurea GRE tunnel over IPsec, which two parameters are required when defining the tunnel interfaceinformation?()
A

The crypto ACL number

B

The IPSEC mode (tunnel or transport)

C

The GRE tunnel interface IP address

D

The GRE tunnel source interface or IP address, and tunnel destination IP address

E

The MTU size of the GRE tunnel interface


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考题 单选题A policy-based IPsec VPN is ideal for which scenario?()A when you want to conserve tunnel resourcesB when the remote peer is a dialup or remote access clientC when you want to configure a tunnel policy with an action of denyD when a dynamic routing protocol such as OSPF must be sent across the VPN

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考题 单选题When configuring a multipoint GRE (mGRE) tunnel interface, which one of the following is NOT a valid configuration option:()A  tunnel sourceB  tunnel destinationC  tunnel keyD  ip addressE  tunnelvrf

考题 单选题Router R1, a branch router, connects to the Internet using DSL. Some traffic flows through a GRE and IPsec tunnel, over the DSL connection, destined for an Enterprise network. Which of the following answers best describes the router's logic that tells the router, for a given packet, to apply GRE encapsulation to the packet?()A When the packet received on the LAN interface is permitted by the ACL listed on the tunnel greacl command under the incoming interfaceB When routing the packet, matching a route whose outgoing interface is the GRE tunnel interfaceC When routing the packet, matching a route whose outgoing interface is the IPsec tunnel interfaceD When permitted by an ACL that was referenced in the associated crypto map

考题 单选题The LAN-side of the Teleworker router is assigned private IP address space (RFC1918), and the VPN topology is IPSec-only (no GRE protocol). When is it required to configure NAT/pNAT on the Teleworker router?()A when all access to the Internet is through the IPSec tunnelB when there is direct Internet access via split-tunnelingC when there is no Internet access configured through the Teleworker routerD whenever you have IOS-Firewall (CBAC) configured

考题 多选题Which two mechanisms can be used to detect IPsec GRE tunnel failures?()ADead Peer Detection (DPD)BCDPCisakmp keepalivesDGRE keepalive mechanismEThe hello mechanism of the routing protocol across the IPsec tunnel