Ace Cisco 300-540 Certification with Actual Questions Mar 25, 2026 Updated [Q92-Q112]

Posted On March 25, 2026

Ace Cisco 300-540 Certification with Actual Questions Mar 25, 2026 Updated

2026 The Most Effective 300-540 with 191 Questions Answers

Q92. What are the key benefits of automatic fault management in service assurance? (Select two)

Increasing manual intervention

Quick identification and mitigation of network issues

Enhanced network reliability and uptime

Reduced need for real-time monitoring

Q93. Automation in deploying NFV can reduce:

The need for manual configuration

Network reliability

Software-defined networking capabilities

The speed of service delivery

Q94. EVPN over SR/MPLS can solve which of the following issues?

Lack of multicast support in traditional networks

The need for manual route configuration in large networks

Inability to use public internet for private connectivity

High costs associated with physical cabling

Q95. What is a benefit of using VXLANs in a cloud-scale environment?

extends Layer 2 segments across the underlying Layer 3 infrastructure

extends Layer 3 segments across the underlying Layer 2 infrastructure

reduces spanning-tree complexity across the Layer 2 infrastructure

eliminates the need for a Layer 3 underlay in the service provider infrastructure

In a cloud-scale or data center-scale environment,Virtual Extensible LAN (VXLAN)is used as anoverlay technologyto transportLayer 2 segments over a Layer 3 underlay network. VXLAN encapsulates Layer 2 Ethernet frames inside UDP/IP packets, allowing broadcast, unknown unicast, and multicast (BUM) traffic and tenant Layer 2 domains to be extended across a routed IP fabric.
Key points aligned with Cisco Service Provider Cloud Infrastructure design principles:
* VXLAN creates aLayer 2 overlay on top of a Layer 3 underlay.
* TheVXLAN Network Identifier (VNI)provides a much larger segmentation space than traditional VLANs, enabling multi-tenancy at cloud scale.
* Because the underlay is pure Layer 3 (IP routed fabric), VXLAN allows you tointerconnect Layer 2 segments between leaf switches or data centers over an IP/MPLS backbonewithout relying on large Layer 2 domains in the physical network.
Why the options evaluate as follows:
* Option A: extends Layer 2 segments across the underlying Layer 3 infrastructure#This is the core benefit of VXLAN in cloud-scale designs. VXLAN encapsulates Layer 2 frames intoIP/UDP headers, allowing isolated Layer 2 segments (per VNI) to be stretched across a routed IP network. This enables:
* Multi-tenant Layer 2 connectivity across a distributed cloud fabric
* Mobility of virtual machines or containers while keeping same IP/MAC addressing
* Use of an IP-based leaf-spine or service provider underlay for scalability and resiliency
* Option B: extends Layer 3 segments across the underlying Layer 2 infrastructure#This is the opposite of what VXLAN does. VXLAN is explicitlyL2-over-L3, not L3-over-L2. Extending pure Layer 3 segments over Layer 2 is not the VXLAN use case.
* Option C: reduces spanning-tree complexity across the Layer 2 infrastructure##(Partially related but not the primary or direct benefit)In modern designs, the underlay isLayer 3 routed, and VXLAN overlays provide logical Layer 2 segments. This designavoids dependence on spanning tree in the fabric, whichindirectlyreduces STP complexity. However, the fundamental, exam-relevant benefit isL2 extension over L3, so C is not the best or most accurate answer compared to A.
* Option D: eliminates the need for a Layer 3 underlay in the service provider infrastructure
#VXLAN absolutelyrequiresan IP (Layer 3) underlay for transport. VXLAN tunnels are built over a routed infrastructure (leaf-spine, MPLS/IP core, etc.). It does not remove the need for Layer 3; it depends on it.

Q96. What is used to protect against an API logic flaw?

SSH encryption at rest

Data encryption at rest

Remediation of vulnerabilities

Data encryption in transit

Q97.

Refer to the exhibit. An engineer must configure an IPsec VPN connection between site 1 and site 2. The ISAKMP policy for the phase 1 negotiations of the tunnel must use AES and SHA-256. This configuration was applied to both PE routers; however, the tunnel fails to come up:
crypto isakmp policy 10
encryption 3des
hash md5
authentication pre-share
group 12
Which two commands must be run on router PE1 to resolve the issue? (Choose two.)

group 10

encryption aes

encryption sha256

hash aes

hash sha256

Q98. For infrastructure security, which of the following is NOT typically a focus area?

Enhancing user interface designs

Implementing ACLs for traffic filtering

Hardening routers to prevent unauthorized access

Encrypting data in transit with MACSEC

Q99. What does Cisco Always-On Cloud DDoS use to protect against DDoS attacks?

Load balancing

Botnet zombies

Traffic mirroring

Scrubbing centers

Q100. A large company’s legacy network is set up with equipment from multiple vendors. The company engaged a network architect to optimize the network for virtualization. The architect must ensure robust and efficient operation, considering the company’s immediate needs but also anticipating future network complexities and scalability requirements. The chosen strategy must be capable of integrating seamlessly with existing systems, while providing a pathway for innovation and growth. The solution must facilitate end-to-end service automation throughout the entire lifecycle, and the implementation must ensure the validation, execution, and abstraction of network configurations and services. Which action must be taken to meet the requirements?

Implement a service life-cycle approach with simplified monitoring that plans for post-deployment adjustments to be incorporated into the automation CI/CD pipeline.

Implement a configuration-management approach that allows for configuring each network device individually to optimize its performance.

Implement a flexible service-modeling approach that leverages automation for ongoing management and refinement as demands on the network evolve.

Implement a service-modeling approach with a static YANG one-size-fits-all model that includes the unique requirements of each different network element.

Q101. Implementing multi-homing in a network design provides __________.

decreased bandwidth

redundancy

increased latency

decreased security

Q102. BGP flowspec is primarily used for:

Authentication

Encrypting data traffic

Distributing traffic flow specifications

Access control

Q103.

Refer to the exhibit. An engineer must connect switch TOR1 and switch TOR2 to switch LEAF1 and switch LEAF2 by using double-sided vPCs. LEAF1 and LEAF2 are already configured as vPC peers. Which action must be taken next to complete the configuration?

Add all the switches to the fabric.

Configure peering between LEAF1 and LEAF2 and TOR1 and TOR2.

Configure MSTP between TOR1 and TOR2.

Configure a vPC between TOR1 and TOR2.

In Cisco data center and cloud-scale designs, adouble-sided vPC(also called vPC-to-vPC) is used when both ends of a Layer 2 port channel are formed by a pair of switches that operate as vPC peers. In this model:
* On the aggregation or leaf side, two switches (in this case,LEAF1 and LEAF2) form a vPC domain with a vPC peer-link and keepalive.
* On the access or ToR side, two switches (in this case,TOR1 and TOR2) must also form their ownvPC domainwith a peer-link and vPC keepalive.
* The port-channel that interconnects the two vPC domains is then configured as a vPC on both sides, creating a vPC-to-vPC topology.
The problem statement specifies thatLEAF1 and LEAF2 are already configured as vPC peers. For a double-sided vPC to work, the other side (TOR1 and TOR2) must also behave as a single logical entity for the downstream Cisco UCS server and for the upstream vPC connection towards LEAF1 and LEAF2. This is only achieved when TOR1 and TOR2 are configured as vPC peers with:
* A vPC domain ID
* A vPC peer-link between TOR1 and TOR2
* vPC member port-channels towards LEAF1 and LEAF2 and towards the Cisco UCS server Therefore, the next required step is to configure avPC between TOR1 and TOR2.
Evaluation of the options:
* Option A, “Add all the switches to the fabric,” is generic and not specific to vPC configuration. It does not address the technical requirement to form a vPC domain on the ToR side.
* Option B, “Configure peering between LEAF1 and LEAF2 and TOR1 and TOR2,” is incorrect because vPC peering is only configured between the two switches that form each vPC domain (LEAF1-LEAF2 and TOR1-TOR2), not across all four switches together.
* Option C, “Configure MSTP between TOR1 and TOR2,” is not required for establishing a double-sided vPC. vPC designs rely on the vPC control plane and the peer-link, not on spanning-tree between the vPC peers for normal operation.
* Option D, “Configure a vPC between TOR1 and TOR2,” correctly describes configuring TOR1 and TOR2 as a vPC pair (vPC domain with peer-link), which is the mandatory step to create a double-sided vPC topology with LEAF1 and LEAF2.

Q104. Virtual Machines and Containers are both used to virtualize resources.
Which statement is true?

VMs are more lightweight than containers.

Containers virtualize the operating system, whereas VMs virtualize the hardware.

VMs can be deployed faster than containers.

Containers are less isolated than VMs.

Q105.

Refer to the exhibit. An engineer must deploy a Layer 3 EVPN over segment routing MPLS in the data center core; however, Cisco switch Spine_A fails to join the OSPF network. Which OSPF command must be run on Spine_A to resolve the issue?

otv join-interface loopback0

address-family ipv4

connected-prefix-sid-map

segment-routing mpls

Q106. The implementation of __________ in high availability designs helps to manage traffic flow and prevent overloads.

DNS

routing protocols

load balancers

firewalls

Q107. Router hardening involves:

Disabling unnecessary services and interfaces

Using default passwords

Allowing all inbound traffic

Decreasing logging level

Q108. Which two network segments are needed to support Cisco VIM? (Choose two.)

Provisioning

Data plane

Heartbeat

Host

Storage

Q109.

Refer to the exhibit. An engineer must configure redundancy by deploying three Cisco vSmart Controllers in each data center. Which two actions must be taken to configure controllers vSmart1 and vSmart4? (Choose two.)