After the recent implementation of a new design that incorporated GRE tunnels into the network, the network
operations staff is seeing the following syslog message in multiple routers on the network – %TUN-5-RECURDOWN: Tunnel0 temporarily disabled due to recursive routing.
From a design perspective, what was not taken into account prior to implementing the solution?
A. The neighboring routers cannot respond within the specified hold time.
B. The interface on the router that is the source of the tunnel is down.
C. The interface on the neighboring router that is the source of the tunnel is down.
D. The router is learning the route to the tunnel destination address using the tunnel interface.
E. The tunnel interface on the router is not receiving any keepalives within the specified hold time.

You are asked to design a large campus network that will be using multicast for data transport. Which feature
should be enabled at the Layer 2 access edge for host-only ports?
A. PortFast
B. BPDU guard
C. PIM-SM
D. PIM query interval

Which two features can be used to extend VRFs across a campus? (Choose two.)
A. 802.1q trunks
B. LDP
C. MPLS TE
D. GRE
E. port channels

Which technique can you use to detect forwarding path failures at a uniform rate, and reconvergence times
will be consistent and predictable when your routers are in the same broadcast domain?
A. Enable BFD on your routers.
B. Configure your routers with IP-SLA to ping the peer router.
C. Configure your routers with IP-SLA and track to ping the peer and switch to a default route if the pings fail.
D. Tune your routing protocol timers.

A network administrator is in charge of multiple IPsec VPN headend devices that service thousands ofremote
connectivity, point-to-point, IPsec/GRE tunnels. During a recent power outage, in which it was foundthat a
backup power supply in one of those headend devices was faulty, one of the headend routers suffered a
complete shutdown event. When the router was successfully recovered, remote users found intermittent
connectivity issues that went away after several hours. Network operations staff accessed the headend
devices and found that the recently recovered unit was near 100% CPU for a long period of time. How would
you redesign the network VPN headend devices to prevent this from happening again in the future?
A. Move the tunnels more evenly across the headend devices.
B. Implement Call Admission Control.
C. Use the scheduler allocate command to curb CPU usage.
D. Change the tunnels to DMVPN.

A company is planning to connect its 30 sites with a VPLS WAN backbone. A router at each site should
establish neighborships with all other routers using the OSPF routing protocol. Which three points must be
considered regarding DR and BDR when different router platforms are used? (Choose three.)
A. It is a best practice that the routers with the most powerful hardware should take the role of the DR and
BDR.
B. If the IP OSPF priority is the same for all routers, the highest loopback IP address and router ID will decide
which routers will take the DR and BDR role during the selection process.
C. To select the DR and BDR, the IP OSPF priority must be set to a higher value than the default value at the
DR and BDR during the selection process.
D. To select the DR and BDR, the IP OSPF priority must be set to a lower value than the default value at the
DR and BDR during the selection process.
E. The role for the DR and BDR will be selected when a new OSPF router comes up.
F. To force two routers to become a DR and a BDR, the IP OSPF priority can be set to zero at all other
OSPF routers.

A company wants a design that would support OSPF through a service provider ATM network. Which two
OSPF network types should the designer use to establish OSPF neighborship between OSPF routers through
the ATM network? (Choose two.)
A. A broadcast network will always work through ATM networks.
B. A broadcast network will work when the broadcast support is explicitly configured at the ATM network.
C. Explicit neighbor statements are required when a nonbroadcast network is configured.
D. Explicit neighbor statements are required when a point-to-multipoint network is configured.
E. A nonbroadcast network does not require DR selection.

You are designing the QoS features for a large enterprise network that includes DMVPN. When
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would you need to configure QoS preclassify?
A. when you are marking packets with the DSCP bits
B. when you are marking packets with the TOS bits
C. when your service provider requires the DSCP bits be set
D. when the QoS policy cannot be based on DSCP ToS bits

A green data center is being deployed and a design requirement is to be able to readily scale server
virtualization. Which IETF standard technology can provide this requirement?
A. Transparent Interconnection of Lots of Links
B. fabric path
C. data center bridging
D. unified fabric

You are designing a multisite VPN solution for a customer and you are concerned with the additional overhead
of point-to-point tunnels and the associated overlay routing with DMVPN. How does a GDOI-based VPN
eliminate the additional tunnel and routing overhead found in DMVPN?
A. The GDOI-based VPN requires overlaying a secondary routing infrastructure through the tunnels.
B. In a GDOI-based VPN, all group members share a common security association.
C. The GDOI-based VPN requires the provisioning of a complex connectivity mesh.
D. The GDOI-based VPN leverages the routing protocol to find its peer for tunnel setup.