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I was interviewed in Dec 2024.
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,...
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 performa...
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
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...
I was interviewed in Nov 2023.
I applied via Naukri.com and was interviewed before Sep 2022. There were 2 interview rounds.
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 config...
I was interviewed before Jun 2023.
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 ...
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 ...
HCLTech interview questions for designations
I applied via Naukri.com and was interviewed in Jun 2021. There were 3 interview rounds.
Get interview-ready with Top HCLTech Interview Questions
What people are saying about HCLTech
I applied via Campus Placement and was interviewed before Apr 2021. There were 4 interview rounds.
It contains Aptitude, reasoning and Essay Writing.
It contains pseudo code.
I applied via Campus Placement and was interviewed before Apr 2021. There were 4 interview rounds.
It contains Aptitude, reasoning and Essay Writing.
It contains pseudo code.
I was interviewed before Mar 2021.
There will be one round of coding
I applied via Campus Placement and was interviewed before Jul 2020. There were 3 interview rounds.
COUNT is a SQL function used to count the number of rows in a table or a result set.
COUNT can be used with the SELECT statement to count the number of rows that match a certain condition
COUNT(*) counts all rows in a table
COUNT(column_name) counts the number of non-null values in a specific column
Grouping in SQL is used to group data based on one or more columns.
GROUP BY clause is used to group data in SQL
Aggregate functions like SUM, COUNT, AVG can be used with GROUP BY
GROUP BY can be used with HAVING clause to filter grouped data
I applied via Company Website and was interviewed before Jun 2021. There were 4 interview rounds.
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