Diensten Tech Senior Network Engineer Interview Questions, Process, and Tips

BGP protocol states include Idle, Connect, Active, OpenSent, OpenConfirm, Established.

• Idle state is the initial state where BGP is not running.

• Connect state is when BGP is trying to establish a TCP connection.

• Active state is when BGP is waiting for a TCP connection to be completed.

• OpenSent state is when BGP has sent an Open message to a peer.

• OpenConfirm state is when BGP has received an Open message and is waiting for ...read more

OSI model has 7 layers while TCP/IP model has 4 layers.

• OSI model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, Application

• TCP/IP model has 4 layers: Network Interface, Internet, Transport, Application

• OSI model is a theoretical model while TCP/IP model is a practical implementation

Inter VLAN routing is the process of forwarding network traffic between different VLANs.

• Inter VLAN routing allows communication between devices in different VLANs.

• It is typically done using a router or a layer 3 switch.

• Each VLAN has its own subnet and IP address range.

• Inter VLAN routing helps in segmenting network traffic for security and performance reasons.

Stateful firewall keeps track of the state of active connections and makes decisions based on the context of the traffic.

• Stateful firewall inspects incoming and outgoing packets and compares them to a database of trusted connections.

• It allows or blocks traffic based on the state of the connection and predefined rules.

• Examples include Cisco ASA, Palo Alto Networks, and Fortinet firewalls.