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Dana India Interview Questions and Answers

Updated 24 Jan 2025
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Q1. What is the difference between Hot Standby Router Protocol (HSRP) and Gateway Load Balancing Protocol (GLBP)?

Ans.

HSRP provides high availability by allowing multiple routers to work together as a single virtual router, while GLBP provides load balancing and redundancy by distributing traffic across multiple routers.

  • HSRP allows for a standby router to take over in case the primary router fails, while GLBP allows for multiple routers to share the traffic load.

  • HSRP uses a virtual IP address and a virtual MAC address, while GLBP uses multiple virtual MAC addresses.

  • HSRP has a single active r...read more

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Q2. If OSPF stuck in exstart stage how to trobleshoot

Ans.

Troubleshooting OSPF stuck in exstart stage

  • Check if there are any network connectivity issues

  • Verify if OSPF neighbor relationships are properly established

  • Ensure that OSPF router IDs are unique

  • Check for any mismatched OSPF parameters such as area IDs or network types

  • Verify if there are any firewall rules blocking OSPF traffic

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Q3. Over view of OSPF, BGP,stp,vtp,hsrp,vrrp, wireless,packet flow

Ans.

Overview of OSPF, BGP, STP, VTP, HSRP, VRRP, wireless, packet flow

  • OSPF (Open Shortest Path First) is a routing protocol used to find the best path for data packets in a network

  • BGP (Border Gateway Protocol) is used to exchange routing information between different autonomous systems

  • STP (Spanning Tree Protocol) prevents loops in Ethernet networks by blocking redundant paths

  • VTP (VLAN Trunking Protocol) manages VLAN configurations across a network

  • HSRP (Hot Standby Router Protocol...read more

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Q4. What is the use of SDWAN?

Ans.

SDWAN stands for Software-Defined Wide Area Network. It is used to simplify the management and operation of a WAN by decoupling the networking hardware from its control mechanism.

  • Improves network performance by utilizing multiple connection types (MPLS, broadband, LTE) and dynamically routing traffic based on application needs

  • Enhances security by encrypting traffic and providing centralized visibility and control over network traffic

  • Reduces costs by optimizing bandwidth usage...read more

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Q5. What is OMP in sdwan?

Ans.

OMP stands for Overlay Management Protocol in SD-WAN, used for communication between the SD-WAN edge devices and the SD-WAN controller.

  • OMP is responsible for exchanging control and management information between the SD-WAN edge devices and the centralized SD-WAN controller.

  • It helps in establishing and maintaining the overlay network tunnels in SD-WAN.

  • OMP is used to convey routing, policy, and configuration information between the edge devices and the controller.

  • It plays a cru...read more

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Q6. Explain OSI model

Ans.

The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

  • The OSI model stands for Open Systems Interconnection model.

  • It helps in understanding how data is transferred between devices in a network.

  • Each layer has specific functions and communicates with the adjacent layers.

  • Examples of layers include physical layer, data link layer, network layer, transport layer, session layer, presentation layer, and a...read more

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Q7. Explain RSTP

Ans.

RSTP stands for Rapid Spanning Tree Protocol, a network protocol used to prevent loops in Ethernet networks.

  • RSTP is an improvement over the original Spanning Tree Protocol (STP) and converges faster in case of network changes.

  • It uses port roles (root, designated, alternate, backup) to determine the best path for data transmission.

  • RSTP also introduces the concept of edge ports and link types to optimize network performance.

  • Example: If a link fails, RSTP can quickly reconfigure...read more

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Interview Process at Dana India

based on 14 interviews
1 Interview rounds
Technical Round
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