10+ BACentric Interview Questions and Answers

Nexus series is designed for data center networking while Catalyst series is designed for enterprise networking.

• Nexus series is optimized for high-performance data center environments.

• Catalyst series is more commonly used in enterprise networks.

• Nexus switches have features like Virtual Device Contexts (VDCs) and FabricPath.

• Catalyst switches have features like Power over Ethernet (PoE) and StackWise.

• Nexus switches are typically more expensive than Catalyst switches.

The number of links that can be bundled in a port channel depends on the specific network equipment and configuration.

• The maximum number of links that can be bundled in a port channel varies depending on the network device and software.

• Commonly, network devices support bundling anywhere from 2 to 8 links in a port channel.

• Some high-end switches or routers may support even more links in a port channel, such as 16 or 32.

• It is important to consult the specific documentation of t...read more

I have used tools like SolarWinds, Nagios, and Wireshark for monitoring network performance and security.

• SolarWinds

• Nagios

• Wireshark

Change management is the process of planning, implementing, and monitoring changes in a structured way to minimize negative impacts and ensure successful outcomes.

• Change management involves identifying the need for change, assessing the impact, planning the change, implementing it, and monitoring its effects.

• It is important to communicate with stakeholders throughout the process to ensure buy-in and minimize resistance.

• Change management often involves creating a detailed chan...read more

ISE authenticates end devices through various methods such as 802.1X, MAC Authentication Bypass (MAB), and Web Authentication.

• ISE uses 802.1X for authenticating end devices based on their credentials.

• MAC Authentication Bypass (MAB) allows devices to be authenticated based on their MAC address.

• Web Authentication is used for guest or non-802.1X devices to authenticate through a web portal.

• ISE can also integrate with other identity stores such as Active Directory for authenticat...read more

Bypassing ISE authentication involves exploiting vulnerabilities or using unauthorized methods to gain access.

• Exploiting vulnerabilities in the ISE system

• Using unauthorized credentials or access methods

• Spoofing MAC addresses or IP addresses

• Intercepting and modifying network traffic

• Using brute force attacks to guess passwords

VPC stands for Virtual Private Cloud, a virtual network dedicated to a user's account within a cloud environment.

• VPC allows users to create isolated sections of the cloud where they can launch resources like virtual machines, databases, and storage.

• Users can define their own IP address range, subnets, route tables, and network gateways within a VPC.

• VPC provides security by allowing users to control inbound and outbound traffic to resources within the virtual network.

• Examples ...read more

HSRP (Hot Standby Router Protocol) and GLBP (Gateway Load Balancing Protocol) are protocols used in networking for providing redundancy and load balancing.

• HSRP is a Cisco proprietary protocol used for providing high availability by allowing two or more routers to work together in a group, with one router acting as the active router and the others as standby routers.

• GLBP is also a Cisco proprietary protocol that allows multiple routers to share the load of routing traffic, pro...read more

Creating a VPC in Nexus involves configuring VLANs, VRFs, and interfaces.

• Configure VLANs for the VPC

• Configure VRFs for the VPC

• Configure interfaces for the VPC

• Verify the VPC configuration

Stacking is a networking technique where multiple switches are interconnected to increase bandwidth and redundancy.

• Stacking involves connecting multiple switches together to operate as a single unit

• It allows for easier management and configuration of multiple switches

• Stacking can improve network performance by increasing bandwidth and providing redundancy

• Examples of stacking protocols include Cisco StackWise, Juniper Virtual Chassis, and HP Intelligent Resilient Framework (IR...read more

FlexConnect is a feature in Cisco wireless LAN controllers that allows access points to locally switch traffic instead of tunneling it back to the controller.

• FlexConnect allows access points to function even if they lose connection to the controller.

• It is useful for branch offices or remote locations where a direct connection to the controller may not be feasible.

• FlexConnect can improve network performance by reducing latency and bandwidth usage.

• Examples of use cases include ...read more

ISE authentication refers to the Identity Services Engine authentication method used for network access control.

• ISE authentication is a method used for network access control

• It provides secure access to network resources based on user identity

• Examples include 802.1X authentication, MAC Authentication Bypass (MAB), and web authentication