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