Capgemini Network Engineer Interview Questions, Process, and Tips

Amplifier EDFA and Raman are both types of optical amplifiers used in fiber optic communication.

• EDFA stands for Erbium-Doped Fiber Amplifier and is commonly used in long-haul communication systems.

• Raman amplifiers use the Raman effect to amplify the signal and are often used in shorter distance communication systems.

• Both amplifiers have their own advantages and disadvantages and are chosen based on the specific needs o...read more

OTN frame structure includes FEC for error correction and DWDM components for multiplexing.

• OTN frame structure consists of a header and payload.

• FEC (Forward Error Correction) is used for error correction in OTN.

• DWDM (Dense Wavelength Division Multiplexing) components are used for multiplexing in OTN.

• OTN frame structure is standardized by ITU-T G.709.

• OTN is widely used in long-haul optical networks.

A firewall is a network security system that monitors and controls incoming and outgoing network traffic.

• It acts as a barrier between a trusted internal network and an untrusted external network

• It can be hardware, software, or a combination of both

• It can be configured to block or allow traffic based on predefined rules

• Examples include Cisco ASA, Fortinet FortiGate, and Palo Alto Networks firewall

VPN stands for Virtual Private Network. It is a secure and encrypted connection between two networks or devices over the internet.

• VPN allows remote access to a private network over the internet

• It provides security and privacy by encrypting the data transmitted

• VPN can be used to bypass geo-restrictions and access content not available in your region

• Examples of VPNs include OpenVPN, Cisco AnyConnect, and NordVPN

TCP/IP is a protocol suite used for communication between devices on the internet.

• TCP/IP has four layers: application, transport, internet, and network access.

• The application layer includes protocols like HTTP, FTP, and SMTP.

• The transport layer includes TCP and UDP protocols.

• The internet layer is responsible for routing packets between networks.

• The network access layer includes protocols like Ethernet and Wi-Fi.

• TCP/IP ...read more

BGP stands for Border Gateway Protocol. It is a routing protocol used to exchange routing information between different networks.

• BGP is used to connect different autonomous systems (AS) on the internet.

• It is a path-vector protocol that selects the best path for data to travel based on policies set by network administrators.

• BGP uses TCP port 179 for communication between routers.

• BGP is used by internet service providers...read more