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Designing a messaging system like WhatsApp
Choose a reliable and scalable backend technology like Node.js
Implement end-to-end encryption for secure communication
Use push notifications for real-time messaging
Allow users to create groups and broadcast messages
Provide features like voice and video calling
Ensure data privacy and compliance with regulations
Design a user-friendly interface for easy navigation
I applied via Referral and was interviewed before May 2020. There were 3 interview rounds.
DCN management refers to the process of managing and maintaining a Data Communication Network.
DCN management involves monitoring network performance and troubleshooting issues
It includes configuring network devices and ensuring network security
DCN management also involves planning and implementing network upgrades and expansions
Examples of DCN management tools include network monitoring software and configuration manag
PDH/SDH technology is a digital transmission technology used in telecommunications to transmit voice and data over long distances.
PDH stands for Plesiochronous Digital Hierarchy and SDH stands for Synchronous Digital Hierarchy.
PDH is an older technology that uses fixed time slots for transmission while SDH uses a flexible time slot approach.
SDH is more efficient and reliable than PDH.
Both PDH and SDH are used in teleco...
Transmission equipments include wired and wireless devices used to transmit data or signals.
Wired transmission equipments: coaxial cables, twisted pair cables, fiber optic cables
Wireless transmission equipments: radio waves, microwaves, infrared waves
Modems, routers, switches, hubs are also transmission equipments
Huawei RTN series includes RTN 300, RTN 500, RTN 900, and RTN 980 with varying capacities.
Huawei RTN 300 has a capacity of up to 1 Gbps
Huawei RTN 500 has a capacity of up to 2 Gbps
Huawei RTN 900 has a capacity of up to 4 Gbps
Huawei RTN 980 has a capacity of up to 10 Gbps
I applied via Naukri.com and was interviewed before Apr 2022. There were 2 interview rounds.
Questions related to MPLS, BGP, VLAN and troubleshooting techniques for BGP
MPLS is a protocol used for efficient packet forwarding in a network
BGP AD value is used to determine the best path for routing traffic
BGP attributes include AS path, next hop, local preference, etc.
Troubleshooting BGP involves checking for configuration errors, checking BGP neighbor status, checking routing tables, etc.
Valid VLANs are those tha...
I applied via LinkedIn and was interviewed before Oct 2021. There were 2 interview rounds.
I applied via Naukri.com and was interviewed before Jan 2022. There were 3 interview rounds.
I applied via Recruitment Consultant
I will drive innovation through cross-functional collaboration, continuous learning, and data-driven decision-making.
Promote cross-functional collaboration to leverage diverse perspectives and expertise
Encourage continuous learning and development to stay ahead of industry trends
Utilize data-driven decision-making to identify opportunities for growth and optimization
Basi aptitude and coding mcq
HashMap is a data structure that stores key-value pairs and allows for fast retrieval of values based on keys.
HashMap is part of the Java Collections framework.
It uses hashing to store and retrieve elements efficiently.
Keys in a HashMap must be unique, but values can be duplicated.
Example: HashMap<String, Integer> map = new HashMap<>();
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