Diensten Tech Senior Network Engineer Interview Questions and Answers

The network is a system of interconnected devices and communication pathways that allow for the exchange of data and information.

• A network can be wired or wireless

• Devices in a network can include computers, servers, routers, switches, and more

• Networks can be local (LAN), wide area (WAN), or global (Internet)

• Protocols like TCP/IP govern how data is transmitted over a network

Networks are essential for connecting devices and enabling communication and data sharing.

• Facilitates communication between devices

• Enables data sharing and collaboration

• Provides access to resources and services

• Supports remote access and mobility

• Increases efficiency and productivity

Optimizing network physically involves organizing cables, using proper equipment, and ensuring efficient airflow.

• Organize cables neatly to prevent tangling and interference

• Use high-quality equipment to minimize downtime and maximize performance

• Ensure proper airflow to prevent overheating and maintain optimal network performance

To provide network for long distance clutter, use technologies like MPLS, SD-WAN, and satellite communication.

• Utilize MPLS (Multiprotocol Label Switching) for efficient routing over long distances

• Implement SD-WAN (Software-Defined Wide Area Network) for centralized control and management of network traffic

• Leverage satellite communication for connectivity in remote or hard-to-reach areas

BGP attributes are used to determine the best path for routing. Path selection process involves comparing attributes like AS path, local preference, etc.

• BGP attributes include AS path, local preference, MED, origin, etc.

• Path selection process involves comparing attributes in a predetermined order to determine the best path.

• AS path attribute is used to prevent routing loops and determine the shortest path to a destinati...read more

Yes, I have worked on configuring and managing firewalls in various network environments.

• Configured firewall rules to control traffic flow

• Managed firewall policies to ensure network security

• Troubleshooted firewall issues and implemented solutions

• Worked with different firewall vendors such as Cisco, Palo Alto, and Fortinet

Check OSPF configuration, network connectivity, router IDs, subnet mismatches, authentication, and hello/dead timers.

• Verify OSPF configuration on both routers

• Check network connectivity between routers

• Ensure router IDs are unique

• Check for subnet mismatches

• Verify authentication settings

• Check hello and dead timers

SIA (Stuck In Active) is a mechanism in EIGRP to prevent routing loops by marking a route as 'stuck' if a feasible successor is not found.

• SIA occurs when a router is unable to find a feasible successor for a route during a topology change.

• During SIA, the router marks the route as 'stuck' and queries its neighbors for a new path.

• This prevents routing loops by temporarily blocking the affected route until a new feasible