Designing Cisco Enterprise Networks (ENSLD) v1.1
Last Update Jun 23, 2026
Total Questions : 379
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Refer to the exhibit. Which process does the Ethernet LMI protocol follow that is defined by the MEF 16 Technical Specification?

Refer to the exhibit. A company specializing in VoD content creation has two offices in a separate multicast domain connected by a WAN link. BGP communication has been established between the offices. Clients are inside the LAN in each office. In AS5373. R2 has been selected as RP. What must the network architect design to deliver VoD content to clients in AS65773?
A network engineer must optimize a campus OSPF deployment Currently each time a type 1 or type 2 LSA is generated within an area, the OSPF process must recompute the entire SPT Which solution improves the recomputation process?
How is end-to-end microsegmentation enforced in a Cisco SD-Access architecture?
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?
An architect must design a topology for a WAN network that satisfies these requirements:
Devices must be able to make informed decisions.
Suboptimal paths are allowed only In case of a failure.
Backup paths must always be available.
Which topology must the architect select?
An engineer is designing a BGP network for a large customer. To permit efficient scaling, the BGP domain is split into clusters. Which peering solution should be used between the route reflectors in different clusters for the BGP routes to be propagated appropriately?
Exhibit:

Refer to the exhibit. An engineer is designing a Layer 2 campus network. The design must support fast convergence and leverage as much bandwidth as possible between layers. Distribution switches do support VSS; unfortunately, not all routing protocols are available for use due to license limitations. Which solution must the engineer choose?
Which function are fabric intermediate nodes responsible for in an SD-Access Architecture?
When a first hop redundancy solution is designed, which protocol ensures that load balancing occurs over multiple routers using a single virtual IP address and multiple virtual MAC addresses?
A company wants to switch from static to dynamic routing. The branches use DMVPN back to the hub using two internet connections. One internet connection speed is 10 Mbps, and the other is 100 Mbps. All locations use Cisco routers; however, the branch routers have limited memory and CPU resources. Which routing protocol and design solution must the company choose for optimal traffic forwarding during peak traffic times?
A network architect Is enabling TV services In the LAN. The source will be streaming to the 239.1.1.1 group IP address. Dense mode Is not allowed In the network. Multicast has already been enabled on all network devices In the LAN segment. Which action must the architect take to finalize the design?

Refer to the exhibit. A network engineer must design a BGP solution based on:
The route reflector must have one or more direct physical connections to the core routers (R3 and R4).
The route reflector must have full redundancy and avoid a single point of failure.
R2 to R1 link utilization is 90%. and the remaining links are less than 50% utilized.
Which two solutions must the design Include? (Choose two.)
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?
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?
Which function do reverse path forwarding mechanisms perform in a multicast deployment?
Which consideration must be made when designing a Cisco SD-Access fabric underlay?

Refer to the exhibit. A customer experienced an unexpected network outage when the link between R1 and R2 went down. An architect must design a solution to ensure network continuity in the event the link fails again. Which solution should the design include?
At which layer does Cisco Express Forwarding use adjacency tables to populate addressing information?
Drag and drop the descriptions from the left onto the categories they apply to on the right.


Refer to the exhibit. A customer needs to apply QoS to the network management traffic passing through the GigabitEthernet0/2 interface. All eight queuing classes are in use, so the new requirement must be integrated into the existing policy. Which solution must the customer choose?
A company plans to transition to IPv6. They will link their IPv4 addresses to the lowest significant bits of the new Ipv6 addresses. A network administrator with an employee id: 4264:42:116 is preparing a mapping schema for the new IPv6 addresses. Which address does the 172.16.10.0/24 network translate to?

Refer to the exhibit. As part of a design review of redistribution, a client requested that R2 be preferred over R3 for traffic passing toward the EIGRP domain. Which method meets this design requirement?
Drag and drop the elements from the left onto the YANG models where they and used on the right.


Refer to the exhibit. An engineer must ensure that the QoS design guarantees bandwidth for the applications, and an application can request a particular type of service to support its delay requirements. Which solution must the engineer select?
A customer requires QoS to support multimedia conferencing over MPLS. The network architect chooses to use per-hop behavior. Which solution must the architect use to classify and mark traffic traveling between branch sites?
What is the role of a control-plane node in a Cisco SD-Access architecture?

Refer to the exhibit. An architect needs to ensure that network traffic from the New Office network can access the server with the least network latency. All links within the network infrastructure currently have the same link cost. Which configuration meets the requirement?
An ISP provides Layer 3 VPN service over MPLS to a customer with four branches and multiple CE routers at
each branch. To exchange the routes that are learned from the CE routers, which BGP address family should
the ISP activate among the PE routers?
What is an advantage of designing an out-of-band network management solution?
An engineer is designing an enterprise campus network. The LAN infrastructure consists of switches from multiple vendors, and Spanning Tree must be used as a Layer 2 loop prevention mechanism. All configured
VLANs must be grouped in two SIP instances. Which standards-based Spanning Tree technology supports this design solution?
What is the purpose of Cisco vBond as a Session Traversal Utilities for NAT server?
A network engineer must design an MSDP multicast solution to provide RP resilience in a network with two separate domains. Also, multicast sources and receivers must register with the local RP. Which solution must the engineer choose?
An architect is designing a network that will utilize the spanning tree protocol to ensure a loop-free topology. The network will support an engineering environment where it is necessary for end users to connect their own network switches for testing purposes. Which feature should the architect include in the design to ensure the spanning tree topology is not affected by these rogue switches?
When is it advisable to provide dedicated control plane nodes within a Cisco SD-Access design?
Drag and drop the characteristics from the left onto the YANG modules they describe on the right. Not all options are used.

An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider ' s switch to the customer ' s router is 1Gbps. Which solution should the engineer include to prevent potential issues with choppy voice traffic?
Which feature is required for graceful restart to recover from a processor failure?

Refer to the exhibit An engineer working for a telecommunication company with an employee ID 4449:30 959 Is calculating STP scalability for switches to ensure that the numbers are below the maximum supported value for STP logical ports How many logical interfaces are active for switch A?
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?
Which element in a Cisco SD-WAN architecture maintains a centralized routing table?
Which solution allows overlay VNs to communicate with each other in an SD-WAN Architecture?

Refer to the exhibit. Customers report low video quality and delays when having point-to-point telepresence video calls between the two locations. An architect must optimize a design so that traffic follows the same path for egress and ingress traffic flows. Which technique optimizes the design?

Refer to the exhibit. An architect is designing an IPv4 plan using the 172.16.0.0/16. The design must maximize the number of subnets while meeting these requirements:
500 hosts within the server room
100 hosts at the remote site
25 hosts at the access site
Which plan must the architect choose?
A)

B)

C)

D)

An architect must design an IPv6 migration solution for a corporation with remote offices to support:
* The customer has IPv4 peering with their service provider.
* IPv6 users need access to IPv4 and IPv6 resources.
* Existing content providers will migrate to IPv6 in the next two years.
* Users will be migrated in a phase-by-phase approach.
Which migration solution must the architect choose?
An engineer must propose a solution for a campus network that includes the capability to create multiple Layer 3 virtual networks. Each network must have its own addressing structure and routing table for data forwarding. The solution must be scalable to support hundreds of virtual networks and allow simple configuration and management with minimal administrative overhead. Which solution does the engineer recommend?
Company A recently acquired another company. Users of the newly acquired company must be able to access a server that exists on Company A’s network, both companies use overlapping IP address ranges. Which action conserves IP address space and provides access to the server?
A customer’s environment includes hosts that support IPv6-only. Several of these hosts must communicate with a public web server that has only IPv4 domain name resolution. Which solution should the customer use in this environment?
A network engineer must connect two sites across a public network using a secure tunneling technology that
supports multicast traffic. Which technology must be chosen?

Refer to the exhibit A customer wants to adopt a dynamic site-to-site VPN solution to secure communication for VoIP, video, and FTP traffic between the remote branches and the headquarters. The customer also wants the branches to communicate directly, thereby reducing traffic at the headquarters location. The solution must consider that the branch routers are limited in available memory. Which VPN solution meets these requirements?
A company’s branch location uses redundant routers and links for connectivity to the headquarters. Also, to use the entire available bandwidth, the branch uses a dynamic routing protocol. An architect must design a multicast streaming solution to avoid RPF check failures because of the current network design. Which deployment model must the architect choose?

Refer to the exhibit. A Cisco Catalyst switch is configured to.. only one MAC address to be learned manually on interface gkjO/2. Which command must be run to dynamically learn the devices that are connected to the switch port?


Refer to the exhibit. A network architect is preparing a network design based on EIGRP. Routers are connected using a Cat6a cable type and the inter-router connection speed is limited to 10 Mbps due to distance. During the pilot phase, a DUAL-3-SIA error message is visible. Which action must the engineer take to create a stable design?

Refer to the exhibit. An engineer is designing a BGP solution for a client that peers with ISP1 for full Internet connectivity and with ISP2 for direct exchange of routes for several third parties. Which action, when implemented on the edge routers, enables the client network to reach the Internet through ISP1?
A network administrator is troubleshooting a DMVPN setup between the hub and the spoke. Which action should the administrator take before troubleshooting the IPsec configuration?
Which two options can you use to configure an EIGRP stub router? (Choose two)
A company is working with a service provider to design a BGP policy. The company is dual-homed with the provider and wants to control which link inbound traffic transits. Also, the company will advertise several networks to the provider and needs propagation to go no further. Which BGP attribute meet these requirements?
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?
An engineer working for a service provider with an employee ID: 4863:43:939 must design a solution to provide remote connectivity over the public internet. The design must:
securely connect multiple remote sites to the central site
provide redundant paths to the central site
allow auto path selection based on failure and connection quality
support IP multicast
minimal configuration at remote sites
Which solution must the engineer choose?
An engineer is designing an IPv4 addressing plan for an enterprise with 1000 branches. Each branch requires a prefix for data and a prefix for voice. Each prefix must accommodate up to 128 hosts, and prefixes must facilitate summarization at aggregation points in the network. The security team requires a simple method for identifying voce prefixes. Which allocation does the engineer recommend from the RFC1918 address space?

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?
What is a logical topology in a Cisco SD-Access architecture considered to be when it is used to virtually connect devices that are built on an arbitrary physical network?

Refer to the exhibit. These requirements must be met:
VLANs span multiple access switches.
All VLANs are trunked on all access switch uplinks to distribution switches.
The STP version is Rapid PVST+.
Which design provides the fastest spanning-tree convergence?

Refer to the exhibit. A customer is planning to deploy a new branch in New York. The new office will not exceed 1024 users. Which subnet must be used to provide maximum number of host addresses while not providing more than necessary?
Which control plane protocol is responsible for ElD-to-RLOC mapping concerning SO-Access Architecture?
A network engineer must design a multicast solution to prevent the spoofing of multicast streams and ensure efficient bandwidth utilization. The network will be merged with another multicast domain in the future, and the merge must require minimum effort. Which two solutions meet the customer requirements? (Choose two.)
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?
A company must run a pilot project for an IPv6 application within the network on existing servers and is investigating migration strategies. Contained within a single VLAN, the pilot must span a dual-site data center environment that is formed of Layer 2 and Layer 3 switches. What is a primary consideration for the pilot?
An engineer must connect a new remote site to an existing OSPF network. The new site consists of two low-end routers, one for WAN, and one for LAN. There is no demand for traffic to pass through this area. Which area type does the engineer choose to provide minimal router resources utilization, while still allowing for full connectivity to the rest of the network?
In the SD-WAN underlay network, which WAN Edge VPN ID is defined as the transport VPN and is used to
carry control traffic?
An engineer is designing a campus network with Cisco Catalyst 95CO switches in the aggression layer. The design requires running nonblocking Layer 2 MEC from the aggregation layer to the access layer. The Catalyst switches are located on different campus floors for availability reasons, and each access switch veil contam a single VLAN. Which technology must the engineer choose for the aggregation switches in the design?
Drag and drop the Cisco Catalyst SD-WAN components from the left to their definitions on the nght

How does OMP behave in a Cisco Catalyst SD-WAN architecture if no policy is defined?
Currently, inter-VRF routing between the global routing table and VRF-A is accomplished on the client firewall, but the customer wants to do this on the core network layer. The customer does not want to run BGP, VRF-Lite : or static routing Which mechanism meets the requirements?

Refer to the exhibit. A customer has two eBGP peerings from a single CE router toward two service providers. The customer has hired an architect to design a solution to ensure certain traffic enters the customer ' s network through interface g¡g0/0. Which solution must the architect include in the design?
An engineer is creating a design to enable IPv6 to run on an existing IPv4 IS-IS network. The IPv4 and IPv6 topologies will match exactly, and the engineer plans to use the same router levels for each protocol per interface. Which IS-IS design is required?
Which control-plane technology allows the same subnet to exist across multiple network locations?
A company is expanding its headquarters to support the relocation of several departments. The network has been running RIP, but as the company has grown, the engineering team has determined that it needs to support a more robust routing protocol. The team is working to design a routing solution that:
supports network segregation, with summarization between segments
ensures fast convergence
provides scalability
Which design must the network team deploy?

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?
An architect is designing a network for an enterprise site. The design must use an active/backup design for the WAN. It must guarantee the SLA for several applications regardless of which connection is used. Which deployment model should the architect choose?
An engineer must configure EIGRP to ensure that all WAN routes are not advertised to the routers in a data center. Which action must be taken?
A company is planning to open two new branches and allocate the 2a01:c30:16:7009::3800/118 IPv6 network for the region. Each branch should have the capacity to accommodate maximum of 200 hosts. Which two networks should the company use? (Choose two.)
An engineer must design a management network that enables SSH, NTP, FTP, and SNMP over the production network. The design requires the management of routers and switches that exist across different networks. Which feature must the design include?
An architect is designing a network solution for a customer. The customer wants a design with redundancy at the distribution layer and the fastest convergence time possible during a failover. In addition, the company has a small IT support team, so the deployment process must be simple and quick. Which solution must the architect select?
An engineer is designing a QoS policy that queues excess packets for later transmission. Which mechanism must be included in the design?
What is a primary capability of the cloud-based services model in an IaaS deployment?
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?
Which nonproprietary mechanism can be used to automate rendezvous point distribution in a large PIM domain?

Refer to the exhibit. All routers currently reside in OSPF area 0. The network manager recently used R1 and R2 as aggregation routers for remote branch locations and R3 and R4 for aggregation routers for remote office locations. The network has since been suffering from outages, which are causing frequent SPF runs. To enhance stability and introduce areas to the OSPF network with the minimal number of ABRs possible, which two solutions should the network manager recommend? (Choose two.)
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?
Which two functions does the control plane node provide in a Cisco SD-Access architecture? (Choose two.)
Which feature minimizes HOC connections and reduces strain on the vSmart controller m an SO-WAN architecture?
Drag and drop the elements from the left onto the functions they perform in the Cisco SD-WAN architecture on the right.

Which type of rendezvous point deployment is standards-based and support dynamic RP discovery?

Refer to the exhibit. An architect is designing an ISIS solution with these requirements:
The backbone area will grow to 50 routers in the next 12 months.
Routers A1 and A2 must avoid suboptimal routing.
Summarization and route-leaking should be allowed in areas 49.002 and 49.003.
Which solution must the architect select?

Refer to the exhibit. An architect is designing a BGP solution to connect a remote branch to a service provider. There are several prefixes within the branch that the company does not want to be advertised to the internet. Which solution should the architect use to accomplish this?
Which method will filter routes between EIGRP neighbors within the same autonomous system?
A company needs to increase access port capacity on one floor of a building. They want to leverage the existing catalyst access switch. There is no problem with uplink bandwidth capacity. However, no additional uplinks can be added because no ports are available on the distribution switches. Which solution must the company choose to provide additional access ports?
A company is running BGP on a single router, which has two connections to the same ISP. Which BGP
feature ensures traffic is load balanced across the two links to the ISP?