Lead Network Engineer Interview Questions and Answers

IKEv1 is an older version of the Internet Key Exchange protocol, while IKEv2 is a newer version with improved security features.

• IKEv1 is less secure compared to IKEv2 due to its outdated encryption algorithms.

• IKEv2 supports more secure encryption algorithms and has built-in support for mobility and multi-homing.

• IKEv1 may be used in legacy systems or environments where compatibility with older devices is required.

• IKEv2 is recommended for modern networks and VPN deployments for...read more

VXLAN fabric is a virtualized network overlay technology that enables the extension of Layer 2 networks over Layer 3 networks.

• VXLAN stands for Virtual Extensible LAN

• It uses a 24-bit VNID (VXLAN Network Identifier) to uniquely identify each virtual network

• VXLAN encapsulates Layer 2 Ethernet frames within Layer 3 UDP packets for transmission across the network

• Underlay network provides the physical connectivity between VXLAN tunnel endpoints (VTEPs)

• Overlay network is the logical...read more

CA Performance Center (CAPC) architecture includes data collection, storage, analysis, and reporting components.

• CAPC consists of a data collector that gathers performance data from network devices and applications.

• The collected data is stored in a database for analysis and reporting.

• CAPC provides a web-based interface for users to view performance metrics and generate reports.

• The architecture also includes alerting mechanisms to notify users of performance issues.

• Integration ...read more

VTP modes are server, client, and transparent. Server mode manages VLAN configuration, client mode receives updates, and transparent mode forwards VTP messages without updating VLAN configuration.

• Server mode: manages VLAN configuration and propagates changes to other switches

• Client mode: receives VTP updates from server mode switches

• Transparent mode: forwards VTP messages without updating VLAN configuration

• VTP pruning can be enabled to reduce unnecessary traffic on trunk link...read more