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Cisco 300-420 Designing Cisco Enterprise Networks (ENSLD) Exam Practice Test

Demo: 33 questions
Total 242 questions

Designing Cisco Enterprise Networks (ENSLD) Questions and Answers

Question 1

Drag and drop the elements from the left onto the YANG models where they and used on the right.

Options:

Question 2

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 thenetwork to reduce the impact when a link fails. Which solution should the architect include in the design?

Options:

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.

Question 3

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

Options:

A.

normal

B.

stub

C.

NSSA

D.

totally stubby

Question 4

A customer has several remote sites connected with their headquarters through microwave links. An engineer must propose a backup WAN solution based on these conditions:

Which backup WAN link type the engineer recommend?

Options:

A.

LTE

B.

802.16 WiMAX

C.

Laser link

D.

802.15.1 Bluetooth

Question 5

Refer to the exhibit. An architect must create a stable and scalable EIGRP solution for a customer. The design must:

•conserve bandwidth, memory, and CPU processing

•prevent suboptimal routing

•avoid any unnecessary queries

Which two solutions must the architect select? (Choose two.)

Options:

A.

route summarization

B.

prefix lists

C.

distribute lists

D.

stub routing

E.

static redistribution

Question 6

An engineer must design a multicast network for a financial application. Most of the multicast sources also receive multicast traffic (many-to-many deployment model). To better scale routing tables, the design must not use source trees. Which multicast protocol satisfies these requirements?

Options:

A.

PIM-SSM

B.

PIM-SM

C.

MSDP

D.

BIDIR-PIM

Question 7

Drag and drop the characteristics from the left onto the YANG models they describe on the right. Not all options are used.

Options:

Question 8

What is one function of the vSmart controller in an SD-WAN deployment?

Options:

A.

orchestrates vEdge and cEdge connectivity

B.

responsible for the centralized control plane of the SD-WAN network

C.

provides centralized network management and a GUI to monitor and operate the SD-WAN overlay

D.

provides a data-plane at branch offices to pass traffic through the SD-WAN network

Question 9

Which two statements about VRRP object tracking are true? (Choose two)

Options:

A.

The priority of a VRRP device can change in accordance with the up or down status of a VRRP object

B.

The VRRP interface priority must be manually configured by the administrator

C.

A VRRP group can track only one object at a time

D.

VRRP can track the status of interfaces and routes

E.

VRRP supports only interface tracking

Question 10

Which topology within a network underlay eliminates the need for first hop redundancy protocols while

improving fault tolerance, increasing resiliency, and simplifying the network?

Options:

A.

virtualized topology

B.

routed access topology

C.

Layer 2 topology

D.

logical fabric topology

Question 11

How are wireless endpoints registered in the HTDB in a Cisco SD-Access architecture?

Options:

A.

Fabric edge nodes update the HTDB based on CAPPWAP messaging from the AP

B.

Fabric WLCs update the HTDB as new clients connect to the wireless network

C.

Border nodes first register endpoints and then update the HTDB

D.

Fabric APs update the HTDB with the clients' ElD and RLOC

Question 12

Which design consideration must be made when using IPv6 overlay tunnels?

Options:

A.

Overlay tunnels that connect isolated IPv6 networks can be considered a final IPv6 network architecture.

B.

Overlay tunnels should only be considered as a transition technique toward a permanent solution.

C.

Overlay tunnels can be configured only between border devices and require only the IPv6 protocol stack.

D.

Overlay tunneling encapsulates IPv4 packets in IPv6 packets for delivery across an IPv6 infrastructure.

Question 13

A customer is discussing QoS requirements with a network consultant. The customer has specified that end-to-end path verification is a requirement. Which QoS solution meets this requirement?

Options:

A.

IntServ model with RSVP to support the traffic flows

B.

DiffServ model with PHB to support the traffic flows

C.

marking traffic at the access layer with DSCP to support the traffic flows

D.

marking traffic at the access layer with CoS to support the traffic flows

Question 14

What is an advantage of designing an out-of-band network management solution?

Options:

A.

In the event of a production network outage, network devices can still be managed.

B.

There is no separation between the production network and the management network.

C.

In the event of a production network outage, it can be used as a backup network path.

D.

It is less expensive than an in-band management solution

Question 15

An engineer must design a scalable QoS architecture that allows the separation of the traffic into classes on predefined business requirements. The design must also utilize the differentiated services code points as the QoS priority descriptor value and support at least 10 levels of classification. Which QoS technology should the engineer include in the design?

Options:

A.

RSVP

B.

Diffserv

C.

Best effort

D.

Interserv

Question 16

Refer to the exhibit. Which two solutions maximize the use of the links between the core and distribution layers? (Choose two.)

Options:

A.

use multiple equal-cost links

B.

use an IGP

C.

use HSRP

D.

use R-PVSTP+

E.

use multiple unequal-cost links

Question 17

An architect must create a QoS solution for a customer to ensure that a 40 Mbps Internet connection is shared between four subnets based on these requirements:

* Each subnet must receive no less than 10 Mbps of download bandwidth during peak traffic times.

* A subnet can use up to 40 Mbps during nonpeak traffic times if the other subnets are idle.

* Download traffic must never experience a delay.

Which solution must the architect choose?

Options:

A.

rate-limiting and shaping

B.

bandwidth percentage and policing

C.

shaping and policing

D.

bandwidth percentage and rate-limiting

Question 18

Refer to the exhibit. An engineer is designing an OSPF network for a client. Requirements dictate that the routers in Area 1 should receive all routes belonging to the network, including EIGRP, except the ones originated in the RIP domain. Which action should the engineer take?

Options:

A.

Make area 1 a NSSA.

B.

Make area 1 a stub.

C.

Make area 1 a standard OSPF area.

D.

Make the area 1 routers part of area 0.

Question 19

Which two options can you use to configure an EIGRP stub router? (Choose two)

Options:

A.

    summary-only

B.

    receive-only

C.

    external

D.

    summary

E.

    totally-stubby

F.

    not-so-stubby

Question 20

Refer to the exhibit. The distribution switches serve as the layer 3 boundary. HSRP preemption is enabled. When the primary switch comes back after a failure, traffic is initially dropped. Which solution must be implemented to improve the design?

Options:

A.

Increase the hello timers on both HSRP devices

B.

Use the preempt delay feature on the primary HSRP device.

C.

Use the preempt delay feature on the backup HSRP device

D.

Configure a higher mac-refresh interval on both HSRP devices

Question 21

Refer to the exhibit. An architect must design an IP addressing scheme for a multisite network connected via a WAN transit. The campus site must accommodate 12,000 devices and the branch sites must accommodate 1,000 devices. Which address scheme optimizes network device resources, contains convergence events to the different blocks of the network, and ensures future growth of the network?

Options:

A.

Campus: 10.0.0.0/18

•Branch1: 10.0.192.0/21

•Branch2: 10.0.200.0/21

B.

• Campus: 10.0.0.0/16

•Branchi: 10.255.0.0/20

•Branch2: 10.255.16.0/20

C.

• Campus: 10.0.0.0/10

•Branch1: 10.64.0.0/10

•Branch2: 10.128.0.0/10

D.

• Campus: 10.0.0.0/20

•Branch1: 10.0.64.0/21

Branch2: 10.0.128.0/21

Question 22

Which two BGP features will result in successful route exchanges between eBGP neighbors sharing the same

AS number? (Choose two.)

Options:

A.

advertise-best-external

B.

bestpath as-path ignore

C.

client-to-client reflection

D.

as-override

E.

allow-as-in

Question 23

When a network is designed using IS-IS protocol, which two circuit types are supported? (Choose two.)

Options:

A.

nonbroadcast multiaccess

B.

multiaccess

C.

point-to-multipoint

D.

nonbroadcast

E.

point-to-point

Question 24

An engineer must design a QoS solution for a customer. The network currently supports data only, but the

customer will roll out VoIP and IP video in conjunction with the new QoS solution. The engineer plans to use

DiffServ. To ensure priority for voice services, which model must the design include?

Options:

A.

8-class model

B.

4-class model

C.

6-class model

D.

12-class model

Question 25

Which method will filter routes between EIGRP neighbors within the same autonomous system?

Options:

A.

distribute-list

B.

policy-based routing

C.

leak-map

D.

route tagging

Question 26

Drag and drop the characteristics from the left onto the correct telemetry mode on the right.

Options:

Question 27

Drag and drop the model-driven telemetry considerations from the left onto the modes they apply to on the right.

Options:

Question 28

When vEdge router redundancy is designed, which FHRP is supported?

Options:

A.

HSRP

B.

OMP

C.

GLBP

D.

VRRP

Question 29

Which component is part of the Cisco SD-Access overlay architecture?

Options:

A.

border node

B.

spine node

C.

leaf node

D.

Cisco DNA Center

Question 30

An existing network solution is using BFD in echo mode. Several of the network devices are experiencing high CPU utilization which an engineer has determined is related to the BFD feature. Which solution should the engineer leverage to reduce the CPU load?

Options:

A.

Implement slow timers between peers with low CPU resources.

B.

Implement BED asynchronous mode between peers with low CPU resources.

C.

Enable BFD multi-hop on the devices with low CPU resources.

D.

Utilize carrier delay on all routers in the network.

Question 31

An engineer must design a large Layer 2 domain that contains hundreds of switches and VLANs. The engineer's primary goals are to:

•Efficiently utilize the bandwidth of all links

•Avoid Layer 2 loops

•Cause minimal impact on switch CPU and memory

Which technology should the engineer include in the design?

Options:

A.

PVST+

B.

Rapid PVST+

C.

MST

D.

RSTP

Question 32

An engineer must peer with an ISP for internet connectivity using BGP, initially, the engineer wants to receive only specific prefixes from the ISP and a default route. However, the solution must provide the flexibility to add prefixes in the future at short notice. The ISP has a two-week change process in place. Which route filtering solution must the engineer employ?

Options:

A.

Request a limited internet routing table and a default route from the ISP and configure the BGP max-limit to 1 with an access list that permits only the specific internet prefixes and blocked networks

B.

Request only the required prefixes and default route be advertised from the ISO with whitelisted networks

C.

Request a full internet routing table and a default route from the ISP and configure inbound route filtering with a prefix list that permits the default route and required prefixes

D.

Configure outbound route filtering on the enterprise and ISP so that the enterprise tell the ISP which prefixes are required

Question 33

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

Options:

Demo: 33 questions
Total 242 questions