An enterprise has implemented an IPv4 addressing scheme on the servers of its core network. To effectively handle the increasing user requests to the server, the enterprise has plans to implement three new subnets with IPv6 addressing in its existing IPv4 network. The network administrator has set up dual-stack routers on the boundary of these […]

Which of the following IPv6/IPv4 interoperability techniques routes both IP versions simultaneously? A. NAT-PT B. Dual stack C. 6to4 tunnels D. Teredo Explanation: When the routers in the network are capable of routing both IPv6 and IPv4 traffic, it is referred to as dual stack. The dual stack routers simply recognize the version a frame […]

Examine the following FIB table: Which of the following statements is NOT true? A. These are the default entries in an FIB table B. No IP addresses have been configured on this router C. Multicast routing is enabled D. The gateway of last resort has not been set Explanation: The Forwarding Information Base (FIB) table […]

Which dialer interface command sets the maximum size of IP packets to 1492? A. router(config-if)# mtu 1492 B. router(config-if)# ip ppp 1492 C. router(config-if)# ip 1492 D. router(config-if)# ip mtu 1492 Explanation: The correct interface command to set the maximum size of IP packets (maximum transmission unit or MTU size) to 1492 is router(config-if)# ip […]

Which of the following statements are TRUE about manually configured IPV4-to-IP6 tunnels and GRE tunnels? (Choose two.) A. Manually configured tunnels use the tunnel mode ipv6ip command, while GRE tunnels use the tunnel mode gre ip command. B. Manually configured tunnels support IPv6 IGPs, while GRE tunnels do not. C. Manually configured tunnels block IPv6 […]

You have implemented an automatic 6-to-4 tunnel between the routers rtrA and rtrB as shown in the following network diagram: The routers rtrA and rtrB are connected to two IPv6 subnets and are separated by an IPv4 network. You decide to verify whether the tunnel was correctly implemented using the show running-config command. Which of […]

Your company has implemented IPv6 addresses and routing on every host, server, and router. Recently, your company acquired another company that has an IPv4 addressing scheme for its entire network. The acquired company’s network does not have any support for IPv6. You need to devise a method so that the IPv6 hosts in your company […]

An automatic IPv4-compatible IPv6 tunnel exists between two IPv6 networks. The two IPv6 networks belong to different BGP autonomous systems (AS). The tunnel source has the IPv4 address 172.168.111.65/24 and the tunnel destination has the IPv4 address 172.168.222.80/24. Which of the following statements is TRUE about the tunnel source and tunnel destination IPv6 addresses? (Choose […]

You have implemented IPv6 automatic 6-to-4 tunneling between three IPv6 subnets as shown in the network exhibit. (Click the Exhibit(s) button.) You have used the following commands to implement the automatic 6-to-4 tunnel: Your supervisor has assigned the task of verifying the automatic 6-to-4 tunnel to one of your colleagues. Your colleague runs the show […]

You have recently joined a company as the network administrator. You have been asked to complete the configuration on the border routers for an automatic 6-to-4 tunnel between several IPv6 network domains. The commands that are currently configured on the routers are as follows: ipv6 route tunnel interface tunnel ipv6 address tunnel source Which of […]