Overlay Tunnels (ENCOR/CCNP Quiz) 1. GRE was originally created to provide transport for non-routable legacy protocols. TRUE FALSE 2. Which of the following are modes of packet transport supported by IPsec? (Choose two.) Tunnel mode Transport mode Transparent mode Crypto mode 3. True or false: ETRs are the only devices responsible for responding to map requests originated by ITRs. TRUE FALSE 4. Which of the following are encryption protocols that should be avoided? (Choose two.) 3DES GCM GMAC AES DES 5. Which of the following UDP ports is the UDP port officially assigned by the IANA for VXLAN? 4789 8472 4987 8947 6. Which of the following commands are optional for GRE configuration? (Choose two.) keepalive tunnel destination ip-address tunnel mode gre {ip | ipv6} tunnel source {ip-address | interface-id} 7. What is the destination UDP port used by the LISP data plane? 4341 4143 4142 4342 8. Which of the following is the message exchange mode used to establish an IKEv1 IPsec SA? Main mode Quick mode CREATE_CHILD_SA Aggressive mode 9. True or False: The VXLAN specification defines a data plane and a control plane for VXLAN. FALSE TRUE 10. Which of the following should not be dynamically advertised via an IGP into a GRE tunnel? The GRE tunnel source interface or source IP address The GRE tunnel IP address Connected interfaces Loopback interfaces Loading … Written by