300-420 Practice Test

Drag and drop the characteristics from the left onto the Yang model they describe on the right. Select and Place:

Refer to the exhibit.

An engineer is designing a routing solution for a customer. The design must ensure that a
failure of network
10.1.0.0/24, 10.1.2.0/24, 10.2.1.0/24, or 10.2.3.0/24 does not impact the core. It also
requires fast convergence
time during any link failover in the core or access networks. Which solution must the
engineer select?

A.

Add aggregation layer between core and access networks.

B.

Enable graceful restart on routers A and C.

C.

Enable FRR for the connected networks of routers A and C.

D.

Enable summarization on routers A and C.

Which OSPF area blocks LSA Type 3, 4 and 5, but allows a default summary route?

A.

normal

B.

stub

C.

NSSA

D.

totally stubby

Refer to the exhibit. The full EIGRP routing table is advertised throughout the network.
Currently, users experience data loss when any one link in the network fails. An architect
optimizes the network to reduce the impact when a link fails. Which solution should the
architect include in the design?

A.

Run BFD on the inter links between EIGRP neighbors.

B.

Summarize the access layer networks from each access layer switch toward the aggregation layer.

C.

Reduce the default EIGRP hello interval and hold time.

D.

Summarize the access layer networks from the aggregation layer toward the core layer.

An engineer is working for a large cable TV provider that requires multiple sources
streaming video on different channels using multicast with no rendezvous point. Which multicast protocol meets these requirements?

A.

PIM-SM

B.

PIM-SSM

C.

any-source multicast

D.

BIDIR-PIM