Lead Network Engineer

Lead Network Engineer Interview Questions and Answers

Updated 19 Jun 2024
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Q1. Ikev1 vs ikev2 and where will you use ikev1 over ikev2

Ans.

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  • IKEv1 is less secure compared to IKEv2 due to its outdated encryption algorithms.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

Q2. Describe the VXLAN fabricand understand the under/overlay principles

Ans.

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

Q3. Explain the architecture of capc

Ans.

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

Q4. Vtp modes and their differences

Ans.

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

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