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Exam 300-101 topic 1 question 578 discussion

Actual exam question from Cisco's 300-101
Question #: 578
Topic #: 1
[All 300-101 Questions]

An IPv6 overlay tunnel is required to communicate with isolated IPv6 networks across an IPv4 infrastructure. There are currently five IPv6 overlay tunnel types.
Which three IPv6 overlay tunnel statements are true? (Choose three)

  • A. Overlay tunnels can only be configured between border routers capable of supporting IPv4 and IPv6.
  • B. Overlay tunnels can be configured between border routers or between a border router and a host capable of supporting IPv4 and IPv6.
  • C. Cisco IOS supports manual, generic, routing encapsulation (GRE), IPv6-compatible, 4to6, and multiprotocol Label Switching (MPLS) Overlay tunneling mechanism.
  • D. Cisco IOS supports manual, generic routing encapsulation (GRE), IPv4-compatible, 6to4, and IntraSite Automatic Tunnel Addressing Protocol (ISATAP) overlay tunneling mechanisms.
  • E. A manual overlay tunnel supports point-to-multipoint tunnels capable of carrying IPv6 and Connectionless Network Service (CLNS) packets.
  • F. Overlay tunneling encapsulates IPv6 packets in IPv4 packets for delivery across an IPv4 infrastructure. BDF
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Suggested Answer: Explanation 🗳️
B: Overlay tunnels can be configured between border routers or between a border router and a host capable of supporting IPv4 and IPv6.
D. Cisco IOS supports manual, generic routing encapsulation (GRE), IPv4-compatible, 6to4, and IntraSite Automatic Tunnel Addressing Protocol (ISATAP) overlay tunneling mechanisms.
F: Overlay tunneling encapsulates IPv6 packets in IPv4 packets for delivery across an IPv4 infrastructure.
by [deleted] at April 3, 2025, 5:56 p.m.

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