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Dana India Interview Questions and Answers
Q1. What is the difference between Hot Standby Router Protocol (HSRP) and Gateway Load Balancing Protocol (GLBP)?
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
Q2. If OSPF stuck in exstart stage how to trobleshoot
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
Q3. Over view of OSPF, BGP,stp,vtp,hsrp,vrrp, wireless,packet flow
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
Q4. What is the use of SDWAN?
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
Q5. What is OMP in sdwan?
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
Q6. Explain OSI model
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
Q7. Explain RSTP
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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