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Cisco 300-420 - Designing Cisco Enterprise Networks (ENSLD)

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Total 339 questions

Refer to the exhibit.

An architect is designing a network for a customer supporting a Wake-on-LAN application. Which solution must the architect choose?

A.

IP directed-broadcasts on R1

B.

spanning-tree uplinkfast on SW1

C.

spanning-tree uplinkfast on SW2

D.

IP directed-broadcasts on R2

Refer to the exhibit. An engineer is designing an OSPF solution for a customer. The design must take into consideration:

    Application load balancers D. E. and F are in different geographical locations and are OSPF-enabled.

    Hosts A, B. and C connect to an application through the load balancers using IP address 10.1.1.1/32.

    In the event of a failure of one of the load balancers, hosts must still have access to the application.

Which solution must the engineer choose?

A.

All load balancers to be co-located in area 0.

B.

X, Y, and Z to be configured as different areas

C.

At least one load balancer to be in area 0.

D.

X, Y and Z to be configured as the same area

A company wants to switch from static routing to a dynamic routing protocol to ease the administrative and operational overhead. The network topology is hub and spoke, and the branches use DM VPN back to the hub with two 10-Mbps internet connections. The branch routers are multivendor and have limited memory and CPU resources. Which routing protocol and design solution meets the requirements?

A.

eBGP with the hub routers set up as route reflectors

B.

ISIS with the hub and spoke routers configured in two different areas

C.

EIGRP with branch routers as stub routers and variance enabled

D.

OSPF with the hub in area 0 and branch routers in stub areas with ECMP

Drag and drop the components in a Cisco SD-Access architecture from the left onto their descriptions on the right.

An architect must design a QoS model for a business-critical application that Is delay-sensitive and requires high bandwidth. The company's head office hosts the application, and DMVPN tunnels protected with IPsec provide connectivity between the head office and branches. Which solution must the architect choose?

A.

RSVP

B.

IntServ

C.

WRED

D.

DiffServ

When is it advisable to provide dedicated control plane nodes within a Cisco SD-Access design?

A.

in a small deployment where border nodes are not required

B.

in a design where fabric edge nodes are unable to provide control plane functionality

C.

in designs without Cisco DNA Center

D.

when there is a requirement for frequent roaming of endpoints across fabric edge nodes

The customer solution requires QoS to support streaming multimedia over a WAN. An architect chooses to use Per-Hop Behavior. Which solution should the engineer use to of mark traffic traveling between branch sites?

A.

LLQ with DSCP EF

B.

CBWFQ with DSCP AF3

C.

CBWFQ with DSCP AF2

D.

LLQ with DSCP AF4

An engineer is tasked with designing a dual BGP peering solution with a service provider. The design must meet these conditions:

    The routers will not learn any prefix with a subnet mask greater than /24.

    The routers will determine the routes to include in the routing table based on the length of the mask alone.

    The routers will make this selection regardless of the service provider configuration.

Which solution should the engineer include in the design?

A.

Use a route map and access list to block the desired networks, and apply the route map to BGP neighbors inbound.

B.

Use a route map and prefix list to block the desired networks, and apply the route map to BGP neighbors outbound.

C.

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors outbound.

D.

Use an IP prefix list to block the desired networks and apply the IP prefix list to BGP neighbors inbound.

Refer to the exhibit. An architect must design a solution to connect the two ASs. To optimize bandwidth, the design will implement load sharing between router R6 and router R4. Which solution should the design include?

A.

Use update-source to specify the Loopback interface.

B.

Use next-hop-serf attributes only for routes that are learned from eBGP peers.

C.

Configure the eBGP TTL to support eBGP multihop.

D.

Use maximum-paths to install multiple paths in the routing table.

Which two considerations must be made regarding the overlay network for a Cisco SD-Access architecture? (Choose two.)

A.

Virtual networks should be used for microsegmentation

B.

SGTs should be used for data plane isolation and microsegmentation

C.

Virtual networks should be used for data plane isolation only

D.

Overlapping IP addresses across different overlay networks should be used to conserve IP addresses

E.

Overlapping IP addresses across different overlay networks should be avoided for operational simplicity