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Designing Cisco Enterprise Networks (ENSLD) Question and Answers

Designing Cisco Enterprise Networks (ENSLD)

Last Update Apr 30, 2024
Total Questions : 242

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Questions 1

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?

Options:

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.

Discussion 0
Questions 2

An engineer must design a solution to provide backup connectivity between two sites. The engineer plans to use an Internet connection but company policy requires the connection to be encrypted. Additionally, there are several applications that utilize multicast to deliver video streams between the sites. Which technology should the design include?

Options:

A.  

GRE over IPsec

B.  

IPsec direct encapsulation

C.  

GETVPN

D.  

DMVPN

Discussion 0
Questions 3

Refer to the exhibit.

An engineer must design a WAN solution so that ISP-1 is always preferred over ISP-2. The path via ISP-2 is

considered as a backup and must be used only when the path to ISP-1 is down. Which

solution must the engineer choose?

Options:

A.  

R1:

- Routes advertised to ISP-1: 0x AS-path prepend

- Routes received from ISP-1: HIGH local-preference

- Routes advertised to R2: no action

- Routes received from R2: community NO-EXPORT

R2:

- Routes advertised to ISP-2:5x AS-path prepend

- Routes received from ISP-2: LOW local-preference

- Routes advertised to R1: community NO-ADVERTISE

- Routes received from R1: no action

B.  

R1:

- Routes advertised to ISP-1: 0x AS-path prepend

- Routes received from ISP-1: HIGH local-preference

- Routes advertised to R2: community NO-EXPORT

- Routes received from R2: no action

R2:

- Routes advertised to ISP-2: 5x AS-path prepend

- Routes received from ISP-2: LOW local-preference

- Routes advertised to R1: no action

- Routes received from R1: no action

C.  

R1:

- Routes advertised to ISP-1: 0x AS-path prepend

- Routes received from ISP-1: LOW local-preference

- Routes advertised to R2: community NO-ADVERTISE

- Routes received from R2: no action

R2:

- Routes advertised to ISP-2: 5x AS-path prepend

- Routes received from ISP-2: HIGH local-preference

- Routes advertised to R1: no action

- Routes received from R1: community NO-ADVERTISE

D.  

R1:

- Routes advertised to ISP-1: 5x AS-path prepend

- Routes received from ISP-1: LOW local-preference

- Routes advertised to R2: community NO-ADVERTISE

- Routes received from R2: no action

R2:

- Routes advertised to ISP-2: 0x AS-path prepend

- Routes received from ISP-2: HIGH local-preference

- Routes advertised to R1: community NO-EXPORT

- Routes received from R1: no action

Discussion 0
Questions 4

Refer to the exhibit.

The failover time of ISP-2 is significantly shorter than ISP-1 when an interface on the ISP router toward the campus network fails. Which solution minimizes the downtime to the sub-second?

Options:

A.  

Aggressive timers

B.  

Next-hop address tracking

C.  

Graceful-restart

D.  

BFD

Discussion 0
Questions 5

Drag and drop the model driven telemetry characteristics from the left onto the mode they belong to on the right.

Options:

Discussion 0
Questions 6

Which two border nodes are available in the Cisco SD-Access architecture? (Choose two.)

Options:

A.  

extended border

B.  

edge border

C.  

internal border

D.  

anywhere border

E.  

intermediate border

Discussion 0
Questions 7

Which two best practices must be followed when designing an out-of-band management network? (Choose two.)

Options:

A.  

    Enforce access control

B.  

    Facilitate network integration

C.  

    Back up data using the management network

D.  

    Ensure that the management network is a backup to the data network

E.  

    Ensure network isolation

Discussion 0
Questions 8

Which design consideration must be made when dual WAN Edge routers are deployed at a branch site?

Options:

A.  

Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.

B.  

HSRP priorities must match the OMP routing policy to prefer one WAN Edge over the other.

C.  

Traffic must be symmetrical as it egresses the WAN Edges and returns from remote sites for DPI to function properly.

D.  

Configure BFD between WAN Edge routers to detect sub-second link failures.

Discussion 0
Questions 9

How is end-to-end microsegmentation enforced in a Cisco SD-Access architecture?

Options:

A.  

VLANs are used to segment traffic at Layer 2.

B.  

5-tuples and ACLs are used to permit or deny traffic.

C.  

SGTs and SGTACLs are used to control access to various resources.

D.  

VRFs are used to segment traffic at Layer 3.

Discussion 0
Questions 10

Refer to the exhibit.

An architect is designing an EIGRP solution based on these requirements:

* Traffic forwarding should use the best two paths while all links are available

* Single path failure must not impact traffic between branch and HQ

Which solution must the architect select?

Options:

A.  

Maximum-paths 2

B.  

Add-paths 2

C.  

Metric weights 010100

D.  

Variance 2

Discussion 0
Questions 11

In an SD-WAN architecture, which methods are used to bootstrap a vEdge router?

Options:

A.  

DHCP options or manual configuration

B.  

vManage or DNS records

C.  

ZTP or manual configuration

D.  

DNS records or DHCP options

Discussion 0
Questions 12

When designing interdomain multicast, which two protocols are deployed to achieve communication between multicast sources and receivers? (Choose two.)

Options:

A.  

IGMPv2

B.  

BIDIR-PIM

C.  

MP-BGP

D.  

MSDP

E.  

MLD

Discussion 0
Questions 13

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?

Options:

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.

Discussion 0
Questions 14

Which information update is carried by OMP and enables the Cisco SD-WAN to build a secure overlay fabric on top of any public or private transport without regard for the actual link IP?

Options:

A.  

TLOC

B.  

RLOC

C.  

LISP PITR

D.  

DTLS

Discussion 0
Questions 15

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

Options:

A.  

HSRP

B.  

OMP

C.  

GLBP

D.  

VRRP

Discussion 0
Questions 16

What is the purpose of an edge node in an SD-Access network fabric?

Options:

A.  

Edge nodes identify and authenticate endpoints and register endpoint information with control plane nodes.

B.  

Edge nodes track endpoint IDs to location mappings, along with IPv4, IPv6, or MAC addresses.

C.  

Edge nodes are the gateway between the fabric domain and network outside of the fabric.

D.  

Edge nodes resolve lookup requests from edge and border nodes to locate destination endpoint IDs.

Discussion 0
Questions 17

Which feature is used to optimize WAN bandwidth of IGMP network traffic among WAN Edge routers in the

same VPN?

Options:

A.  

IGMPv2

B.  

multicast RP

C.  

multicast-replicator

D.  

multicast service routes

Discussion 0
Questions 18

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

Discussion 0
Questions 19

Refer to the exhibit. An architect must design a solution to connect bank site A with bank site B and support:

  • network operation center monitoring end-to-end L3VPN and L2VPN traffic
  • company adding thousands of routes in the next two years

Which two BGP solutions must the design include? (Choose two.)

Options:

A.  

Establish full mesh IBGP peering with ail routers in different IGP domains.

B.  

Redistribute different IGP domain routes in a BGP IPv4 routing instance.

C.  

Transport site routes using a BGP VPNv4 address family on the PE routers.

D.  

Apply BGP policies on all routers to filter out ABR and PE loopback IP addresses.

E.  

Connect multiple IGP'LDP domains using a BGP IPv4 unicast family on the ABR.

Discussion 0
Questions 20

At which layer does Cisco Express Forwarding use adjacency tables to populate addressing information?

Options:

A.  

    Layer4

B.  

    Layer 2

C.  

    Layer 1

D.  

    Layer 3

Discussion 0
Questions 21

Drag and drop the characteristics from the left onto the telemetry mode they apply to on the right.

Options:

Discussion 0
Questions 22

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

Discussion 0
Questions 23

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

Discussion 0
Questions 24

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?

Options:

A.  

PIM-SM

B.  

PIM-SSM

C.  

any-source multicast

D.  

BIDIR-PIM

Discussion 0
Questions 25

An architect is designing a multicast solution for a network that contains over 100 routers. The architect plans to create several multicast domains and balance the PIM-SM traffic within the network. Which technology should the architect include in the design?

Options:

A.  

DVMRP

B.  

IGMP

C.  

MOSPF

D.  

MSDP

Discussion 0
Questions 26

Refer to the exhibit.

A network engineer must design a multicast solution based on:

* Many-to-many communications between the users and sources

* Support of up to 50 multicast sources

* Users that must register for steams

Which multicast solution must the engineer select?

Options:

A.  

Any Source Multicast

B.  

Bidirectional PIM

C.  

Source-Specific Multicast

D.  

Multicast VPN

Discussion 0
Questions 27

An engineer is designing a PIM Anycast RP solution between two data centers. The design must ensure that RP1 in DC1 and RP2 in DC2 inform each other about specific sources that have joined locally. Which solution must the engineer choose?

Options:

A.  

Provision the RPs on the same IP subnet and extend the subnet at Layer 2 between data centers

B.  

Enable MSDP between RPs using separate unique loopback interfaces

C.  

Enable MSDP between RPs using the configured Anycast RP address

D.  

No action is required because PIM registers from the source will, by default, reach each RP

Discussion 0
Questions 28

A company's security policy requires that all connections between sites be encrypted in a manner that does not

require maintenance of permanent tunnels. The sites are connected through a private MPLS-based service that

uses a dynamically changing key and spoke-to-spoke communication. Which type of transport encryption must

be used in this environment?

Options:

A.  

GETVPN

B.  

DMVPN

C.  

GRE VPN

D.  

standard IPsec VPN

Discussion 0
Questions 29

A network solution is being designed for a company that connects to multiple Internet service providers. Which Cisco proprietary BGP path attribute will influence outbound traffic flow?

Options:

A.  

Local Preference

B.  

MED

C.  

Weight

D.  

AS Path

E.  

Community

Discussion 0
Questions 30

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

Discussion 0
Questions 31

An organization is designing a detailed QoS plan that limits bandwidth to specific rates. Which two parameters are supported be the traffic policing feature? (Choose two.)

Options:

A.  

violating

B.  

marking

C.  

shaping

D.  

bursting

E.  

conforming

Discussion 0
Questions 32

Refer to the exhibit.

An architect must design an IGP solution for an enterprise customer. The design must support:

Physical link flaps should have minimal impact.

Access routers should converge quickly after a link failure.

Which two ISIS solutions should the architect include in the design? (Choose two.)

Options:

A.  

Use BGP to IS-IS redistribution to advertise all Internet routes in the Level 1 area.

B.  

Advertise the IS-IS interface and loopback IP address toward the Internet and data center.

C.  

Reduce SPF and PRC intervals to improve convergence time.

D.  

Configure all access and aggregate routers to establish Level 1 / Level 2 adjacencies across the network.

E.  

Configure access routers to establish a Level 1 adjacency and aggregate routers to establish a Level 1 /

Level 2 adjacency.

Discussion 0
Questions 33

Refer to the exhibit. An architect reviews the low-level design of a company's enterprise network and advises optimizing the STP convergence time. Which functionality must be to Gi1/0/1-10 to follow the architect's recommendation?

Options:

A.  

PortFast

B.  

root guard

C.  

UplinkFast

D.  

BPDU guard

Discussion 0