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I applied via Monster and was interviewed in Sep 2022. There were 2 interview rounds.
STP stands for Spanning Tree Protocol. It is a network protocol that prevents loops in a network topology.
STP is used to prevent broadcast storms and network loops.
It works by creating a logical tree structure of the network, with one root bridge and multiple branches.
STP blocks redundant links to prevent loops, but can activate them if the primary link fails.
STP has different versions, including RSTP and MSTP, which o...
A /29 subnet mask allows for 6 usable hosts.
/29 subnet mask has 3 bits for host addresses
2^3 - 2 = 6 usable hosts
The first and last addresses are reserved for network and broadcast respectively
I applied via Company Website and was interviewed before Jan 2019. There were 3 interview rounds.
I applied via Recruitment Consulltant and was interviewed before Jan 2023. There were 3 interview rounds.
My field in engineering is O&M (Operations and Maintenance) Engineering.
O&M Engineering involves managing and optimizing the operations and maintenance of various systems and equipment.
It includes tasks such as monitoring performance, troubleshooting issues, conducting preventive maintenance, and implementing improvements.
Examples of systems that O&M Engineers work with include power plants, manufacturing facilities, w...
Railtel Corporation Of India interview questions for popular designations
I applied via Naukri.com and was interviewed in Apr 2022. There were 2 interview rounds.
Get interview-ready with Top Railtel Corporation Of India Interview Questions
I applied via Walk-in and was interviewed before Aug 2021. There were 2 interview rounds.
Optical fiber works on the principle of total internal reflection of light.
Light is transmitted through a core made of glass or plastic
The core is surrounded by a cladding layer with a lower refractive index
When light enters the core at an angle greater than the critical angle, it reflects off the cladding and stays within the core
This allows for high-speed data transmission over long distances
Examples include fiber op...
L2 VPN operates at the data link layer, while L3 VPN operates at the network layer.
L2 VPN provides layer 2 connectivity between remote sites, while L3 VPN provides layer 3 connectivity.
L2 VPN uses MAC addresses for forwarding, while L3 VPN uses IP addresses.
L2 VPN is typically used for connecting LANs, while L3 VPN is used for connecting networks.
L2 VPN is transparent to the network layer protocols, while L3 VPN requir...
I applied via Job Fair and was interviewed before Aug 2021. There were 2 interview rounds.
I applied via Referral and was interviewed in Jul 2021. There was 1 interview round.
OSI model is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system.
OSI stands for Open Systems Interconnection.
It has 7 layers, each with a specific function.
The layers are: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer communicates with the layer above and below it.
Example: HTTP (Application layer) uses...
Topologies refer to the arrangement of components in a network. There are several types of topologies.
Bus topology
Star topology
Ring topology
Mesh topology
Hybrid topology
I applied via Referral and was interviewed before Aug 2021. There were 2 interview rounds.
Optical fiber works on the principle of total internal reflection of light.
Light is transmitted through a core made of glass or plastic
The core is surrounded by a cladding layer with a lower refractive index
When light enters the core at an angle greater than the critical angle, it reflects back into the core
This allows the light to travel long distances without significant loss of signal
Used in telecommunications, inte
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