Which two mechanisms ensure that a network design provides fast path failure detection? (Choose two.)
A. BFD
B. fast hello packets
C. UDLD
D. IP Cisco Express Forwarding

Refer to the exhibit.

Your junior design engineer presents this configuration design. What is the next-hop router for
19

CE3, and why?
A. CE1. BGP weight is higher than CE2.
B. CE2. EBGP administrative distance is lower than RIP.
C. CE2. The link between CE2 and PE1 has more bandwidth than CE1-to-PE1.
D. CE1. HSRP on CE1 is in active state.

A service provider creates a network design that runs MPLS in its WAN backbone using OSPF as the IGP
routing protocol. What would be two effects of additionally implementing MPLS-TE? (Choose two.)
A. MPLS-TE is required to reroute traffic within less than 1 second in case of a link failure inside the
backbone.
B. MPLS-TE is required to route different MPLS QoS service classes through different paths.
C. MPLS-TE and OSPF cannot be used together inside one MPLS network.
D. MPLS-TE cannot use OSPF for the traffic path calculation.
E. MPLS-TE is required to create backup paths independently from the IGP.

A company requests that you consult with them regarding the design of their production, development,and
test environments. They indicate that the environments must communicate effectively, but they must be kept
separate due to the inherent failures on the development network. What will be configured on the links
between the networks to support their design requirements?
A. IBGP
B. EBGP
C. OSPF
D. static routes

Refer to the exhibit.
17

How would you adjust the design to improve convergence on the network?
A. Add an intra-POP link between routers 1A and 1B, and enable IP LFA FRR.
B. Use an IP SLA between the end stations to detect path failures.
C. Enable SSO-NSF on routers 1A and 1B.
D. Use BGP to connect the sites over the WAN.

Refer to the exhibit.
16

The design is being proposed for use within the network. The CE devices are OSPF graceful restart-capable,
and the core devices are OSPF graceful restart-aware. The WAN advertisements received from BGP are
redistributed into OSPF. A forwarding supervisor failure event takes place on CE A. During this event, how will
the routes learned from the WAN be seen on the core devices?
A. via CE A and CE B
B. via CE A
C. via CE B
D. no WAN routes will be accessible

A large enterprise customer is migrating thousands of retail offices from legacy TDM circuits to an Ethernet-based service. The network is running OSPF and has been stable for many years. It is now possible to
backhaul the circuits directly to the data centers, bypassing the regional aggregation routers. Which two
networking issues need to be addressed to ensure stability with the new design? (Choose two.)
A. Nothing will change if the number of offices is the same.
B. Nothing will change if the number of physical interfaces stays the same.
C. The RIB will increase significantly.
D. The FIB will increase significantly.
E. The amount of LSA flooding will increase significantly.
F. The size of the link-state database will increase significantly.

15

During a network design review, it is recommended that the network with a single large area should be broken
up into a backbone and multiple nonbackbone areas. There are differing opinions on how many ABRs are
needed for each area for redundancy. What would be the impact of having additional ABRs per area?
A. There is no impact to increasing the number of ABRs.
B. The SPF calculations are more complex.
C. The number of externals and network summaries are increased.
D. The size of the FIB is increased.

In a large enterprise network with multiple data centers and thousands of access devices, OSPF is becoming
unstable due to link flapping. The current design has the access devices multihomed to large aggregation
routers at each of the data centers. How would you redesign the network to improve stability?
A. Add a layer of regional Layer 3 aggregation devices, but leave the ABR function on the data center
aggregation routers.
B. Add a layer of regional Layer 2 aggregation devices, but leave the ABR function on the data center
aggregation routers.
C. Add a layer of regional Layer 3 aggregation devices and move the ABR function to the regional
aggregation device.
D. Add a layer of regional Layer 2 aggregation devices and move the ABR function to the regional
aggregation device.

What are two benefits of following a structured hierarchical and modular design? (Choose two.)
A. Each component can be designed independently for its role.
B. Each component can be managed independently based on its role.
C. Each component can be funded by different organizations based on its role.
D. Each component can support multiple roles based on the requirements.
E. Each component can provide redundancy for applications and services.