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