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Exam 300-135 topic 7 question 5 discussion

Actual exam question from Cisco's 300-135
Question #: 5
Topic #: 7
[All 300-135 Questions]

Which three features are benefits of using GRE tunnels in conjunction with IPsec for building site-to-site VPNs? (Choose three.)

  • A. allows dynamic routing over the tunnel
  • B. supports multi-protocol (non-IP) traffic over the tunnel
  • C. reduces IPsec headers overhead since tunnel mode is used
  • D. simplifies the ACL used in the crypto map
  • E. uses Virtual Tunnel Interface (VTI) to simplify the IPsec VPN configuration
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Suggested Answer: ABD 🗳️
by diegonamaste at Jan. 14, 2020, 8:17 p.m.

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wjavier
5 years, 2 months ago
ABD With the p2p GRE over IPsec solution, all traffic between sites is encapsulated in a p2p GRE packet before the encryption process, simplifying the access control list used in the crypto map statements. The crypto map statements need only one line permitting GRE (IP Protocol 47). https://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/P2P_GRE_IPSec/P2P_GRE/2_p2pGRE_Phase2.html
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diegonamaste
5 years, 3 months ago
I think ABE are corrects
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