Bharti Airtel NOC Engineer Interview Questions, Process, and Tips for Experienced

Protocols are standardized rules for data communication in networks, ensuring devices can communicate effectively.

• TCP/IP: Used for internet communication, ensuring reliable data transmission.

• HTTP/HTTPS: Protocols for transferring web pages; HTTPS adds security.

• FTP: File Transfer Protocol for transferring files between client and server.

• SMTP: Simple Mail Transfer Protocol for sending emails.

• SNMP: Simple Network Manageme...read more

Overview of DHCP, DNS, router types, and their functions in network management.

• DHCP (Dynamic Host Configuration Protocol) assigns IP addresses dynamically to devices on a network.

• DNS (Domain Name System) translates human-readable domain names into IP addresses.

• Types of routers include: 1) Core Routers - manage traffic within a network backbone; 2) Edge Routers - connect to external networks.

• Example of DHCP: A device co...read more

I have 5 years of experience working as a NOC Engineer in a telecommunications company.

• Managed network operations and monitored network performance

• Troubleshooted network issues and implemented solutions

• Collaborated with cross-functional teams to ensure network reliability

• Performed regular maintenance and upgrades on network equipment

• Documented network configurations and changes for future reference

An interface is a point of interaction between two components, devices, or systems.

• Interfaces define how different components communicate with each other

• They can be physical (e.g. USB port) or virtual (e.g. API)

• Examples include Ethernet ports, HDMI connectors, and software APIs

MCS stands for Multiple Channel Support and is a feature that allows a device to communicate on multiple channels simultaneously.

• MCS enables devices to increase data throughput by utilizing multiple channels for communication.

• It is commonly used in wireless communication protocols like Wi-Fi to improve network performance.

• For example, in Wi-Fi 6, MCS allows devices to transmit data on multiple channels at the same time

RSSI stands for Received Signal Strength Indicator and is a measurement of the power level being received by a device.

• RSSI is a value that indicates the strength of the signal being received by a device.

• RF devices work on the best RSSI by constantly monitoring and adjusting their connection to maintain the strongest signal.

• Devices can switch between different access points or channels to find the best RSSI for optimal ...read more

BGP (Border Gateway Protocol) is a standardized exterior gateway protocol used to exchange routing information between different autonomous systems on the internet.

• BGP has four main stages: Idle, Connect, OpenSent, and Established.

• In the Idle stage, the BGP process is not running.

• In the Connect stage, a TCP connection is established with the neighbor.

• In the OpenSent stage, BGP parameters are exchanged.

• In the Establishe...read more