Future Netwings Solutions Senior Network Security Engineer Interview Questions, Process, and Tips

OSPF (Open Shortest Path First) is a routing protocol used to find the best path for data packets in a network.

• OSPF is a link-state routing protocol

• It uses Dijkstra's algorithm to calculate the shortest path

• OSPF routers exchange link-state advertisements (LSAs) to build a topology map of the network

• It supports VLSM (Variable Length Subnet Masking) and CIDR (Classless Inter-Domain Routing)

• OSPF is widely used in large en

Stateless firewall filters packets based solely on the information in the packet header, while stateful firewall keeps track of the state of active connections.

• Stateless firewall operates at the network layer and filters packets based on IP addresses and ports

• Stateful firewall operates at the session layer and keeps track of the state of active connections

• Stateful firewall can make decisions based on the context of the...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 is used to make routing decisions based on network policies, rules, and attributes.

• It is a path vector protocol that allows routers to share information about the best path to reach a certain destination.

• BGP operates on TCP port 179 and uses TCP connecti...read more

VLAN stands for Virtual Local Area Network, used to segment network traffic for security and performance purposes.

• VLANs divide a physical network into multiple logical networks, allowing for better control over traffic flow.

• Each VLAN operates as if it is its own separate network, even though devices may physically be connected to the same network switch.

• VLANs can improve network security by isolating sensitive data or ...read more

STP stands for Spanning Tree Protocol, which is used to prevent loops in a network by creating a loop-free logical topology.

• STP is a network protocol that ensures a loop-free topology in Ethernet networks.

• Types of STP include IEEE 802.1D (STP), IEEE 802.1w (Rapid STP), and IEEE 802.1s (Multiple STP).

• STP works by electing a root bridge and blocking redundant paths to prevent loops.

• STP convergence time can be improved wi