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To pass the Cisco 300-620 exam, candidates must demonstrate their knowledge and skills in various areas related to ACI, including fabric infrastructure, network policies, virtualization, and automation. 300-620 exam consists of 60-70 questions and lasts for 90 minutes. Candidates who successfully pass the exam will earn the Cisco Certified Specialist - ACI Implementation certification, which validates their skills in implementing and managing ACI.
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Cisco Implementing Cisco Application Centric Infrastructure Sample Questions (Q208-Q213):
NEW QUESTION # 208
Refer to the exhibit.
Refer to the exhibit. A Cisco ACI fabric displays this fault. Which set of actions modifies the event to be displayed as a warning in the future?
- A. Navigate to the ACI Fault tab.
Change the severity level.
- B. Navigate to the ACI Fault tab.
Create a new record.
- C. Navigate to the ACI Events tab.
Change the severity level.
- D. Navigate to the ACI Events tab.
Create a new record.
Answer: C
NEW QUESTION # 209
What is MP-BGP used for in Cisco ACl fabric?
- A. MP-BGP Layer 2 VPN EVPN AF is used to propagate L30ut routes that are received from a border leaf.
- B. MP-BGP VPNv4 AF is used as protocol on L3Out between a border leaf and an external router
- C. MP-BGP VPNv4 AF is used between spines in an ACI Multi-Pod fabric to propagate the endpoint
- D. MP-BGP VPNv4 AF is used to propagate L3Out routes that are received from a border leaf to the fabric.
Answer: D
Explanation:
In Cisco ACI fabric, MP-BGP (Multi-Protocol Border Gateway Protocol) is utilized for several purposes, one of which includes the propagation of L3Out (Layer 3 Out) routes within the fabric. Specifically, MP-BGP with VPNv4 address family (AF) is used in the ACI infra VRF (overlay-1 VRF) to distribute external routes from a border leaf to other leaf switches1. This allows for the efficient dissemination of routing information and ensures that all relevant leaf switches are aware of the routes necessary to reach external networks.
Reference:
ACI Fabric L3Out White Paper - Cisco1
Configuring ACI Fabric BGP Route Reflectors - Cisco2
ACI Fabric - Underlying protocols - Cisco Community3
Cisco Application Centric Infrastructure Fundamentals, Release 5.3(x)4
NEW QUESTION # 210
An engineer associates EPG-A with a VMM domain and sets the Deployment and Resolution preferences to Immediate. The host that will generate endpoints for EPG-A is attached to Leaf-and Leaf-102 using etht1/1. However, no configuration for EPG-A appears to have been pushed to the leaf switches. Which action must be taken for the configuration to be pushed to f-101 and Leaf-102?
- A. Configure both ports for trunking.
- B. Enable LACP on the leaf switch ports.
- C. Disable and enable eth1/1 on both leaf switches
- D. Enable CDP or LLDP on the host.
Answer: D
Explanation:
The scenario involves associating EPG-A with a Virtual Machine Manager (VMM) domain, setting the Deployment and Resolution preferences to Immediate, and attaching the host (generating endpoints for EPG-A) to Leaf-101 and Leaf-102 via eth1/1. However, no configuration for EPG-A is pushed to the leaf switches. This suggests an issue with the discovery or communication between the ACI fabric and the host. Let's analyze the options based on Cisco ACI documentation.
Requirement Analysis
The VMM domain integration (e.g., VMware vCenter) relies on protocols like Cisco Discovery Protocol (CDP) or Link Layer Discovery Protocol (LLDP) to detect and map virtualized endpoints to the correct EPG.
The "Immediate" preference ensures that policies are applied as soon as endpoints are detected, but this requires proper protocol support for host discovery.
No configuration on the leaf switches indicates a failure in endpoint detection or policy application.
Option Evaluation
A . Enable CDP or LLDP on the host:
ACI uses CDP or LLDP to discover hosts and their interfaces when integrated with a VMM domain. If the host does not have CDP or LLDP enabled, the ACI fabric cannot detect the host's attachment to Leaf-101 and Leaf-102, preventing EPG-A configuration from being pushed. Enabling these protocols on the host resolves the issue.
Reference:
B . Configure both ports for trunking:
Configuring ports as trunk ports allows multiple VLANs, which is necessary for EPG encapsulation. However, this is typically handled by the VMM domain integration and does not address the lack of configuration push if discovery fails due to missing CDP/LLDP.
C . Enable LACP on the leaf switch ports:
Link Aggregation Control Protocol (LACP) is used for port channels (e.g., vPC), but it is not required for basic EPG deployment with VMM domains. The issue is related to host discovery, not link aggregation.
D . Disable and enable eth1/1 on both leaf switches:
This is a troubleshooting step to reset the port state, but it does not address the root cause (lack of CDP/LLDP for host detection). It is a reactive measure, not a solution.
Final Answer Justification
A is correct because enabling CDP or LLDP on the host allows the ACI fabric to detect the host and push the EPG-A configuration to Leaf-101 and Leaf-102. This is a standard requirement for VMM domain integration in ACI.
Primary Cisco Reference:
Cisco APIC Layer 4 to Layer 7 Services Deployment Guide, "VMM Domain Configuration." Cisco ACI Best Practices, "Host Discovery with CDP/LLDP."
NEW QUESTION # 211
Which switch type is discovered first in the Cisco ACI fabric discovery process?
- A. spine
- B. distribution
- C. leaf
- D. access
Answer: C
Explanation:
The question asks which switch type is discovered first in the Cisco ACI fabric discovery process. The ACI fabric consists of spine and leaf switches, and the discovery process is a critical initial step to establish the fabric topology. Let's analyze this based on Cisco ACI documentation.
Requirement Analysis
The ACI fabric discovery process involves the Application Policy Infrastructure Controller (APIC) identifying and registering switches to form the network topology.
The process relies on protocols like Link Layer Discovery Protocol (LLDP) and Cisco Discovery Protocol (CDP) to detect connected devices.
The sequence of discovery is determined by the physical connectivity and the role of switches in the fabric.
Option Evaluation
A . leaf:
In the Cisco ACI fabric, the discovery process begins with the leaf switches. When the APIC is powered on and connected to the fabric, it first discovers the leaf switches directly attached to it or other initial points of connectivity. Leaf switches are the access layer devices that connect endpoints and are the starting point for fabric topology discovery. Once leaf switches are identified, they assist in discovering the spine switches.
Reference:
B . access:
"Access" is not a specific switch type in the ACI fabric context. It may refer to external access switches, but these are not part of the initial fabric discovery process, which focuses on spine and leaf switches.
C . distribution:
"Distribution" is a traditional network layer, but it does not apply to the ACI fabric, which uses a spine-leaf architecture. This option is irrelevant.
D . spine:
Spine switches are discovered after the leaf switches because the leaf switches provide the connectivity path to the spines. The APIC uses the leaf switches to map the spine layer in the fabric topology.
Final Answer Justification
A is correct because the ACI fabric discovery process starts with the leaf switches. The APIC initially detects leaf switches connected to it or other initial points, and then uses this information to discover the spine switches, establishing the full fabric topology.
Primary Cisco Reference:
Cisco APIC Getting Started Guide, "Fabric Bring-Up and Discovery."
Cisco ACI Design Guide, "Fabric Discovery Process."
NEW QUESTION # 212
An engineer must securely export Cisco APIC configuration snapshots to a secure, offsite location The exported configuration must be transferred using an encrypted tunnel and encoded with a platform-agnostic data format that provides namespace support Which configuration set must be used?
- A. Option A
- B. Option B
- C. Option D
- D. Option C
Answer: C
NEW QUESTION # 213
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