Choose three a it builds a secure tunnel to negotiate

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Which three statements are functions that are performed by IKE phase 1? (Choose three.) A. It builds a secure tunnel to negotiate IKE phase 1 parameters. B. It establishes IPsec security associations. C. It authenticates the identities of the IPsec peers. D. It protects the IKE exchange by negotiating a matching IKE SA policy. E. It protects the identities of IPsec peers. F. It negotiates IPsec SA parameters. Answer: C,D,E Cisco 400-101 Exam "Pass Any Exam. Any Time." - 272
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Explanation: The basic purpose of IKE phase 1 is to authenticate the IPSec peers and to set up a securechannel between the peers to enable IKE exchanges. IKE phase 1 performs the followingfunctions: ReferencE. QUESTION NO: 333 The session status for an IPsec tunnel with IPv6-in-IPv4 is down with the error message IKE message from 10.10.1.1 failed its sanity check or is malformed. Which statement describes a possible cause of this error? QUESTION NO: 334 Which three statements describe the characteristics of a VPLS architecture? (Choose three.) A. It forwards Ethernet frames. B. It maps MAC address destinations to IP next hops. C. It supports MAC address aging. Cisco 400-101 Exam "Pass Any Exam. Any Time." - 273
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D. It replicates broadcast and multicast frames to multiple ports. E. It conveys MAC address reachability information in a separate control protocol. F. It can suppress the flooding of traffic. QUESTION NO: 335 A GRE tunnel is down with the error message %TUN-5-RECURDOWN: Tunnel0 temporarily disabled due to recursive routing error. Which two options describe possible causes of the error? (Choose two.) A. Incorrect destination IP addresses are configured on the tunnel. B. There is link flapping on the tunnel. C. There is instability in the network due to route flapping. D. The tunnel mode and tunnel IP address are misconfigured. E. The tunnel destination is being routed out of the tunnel interface.
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