Cezen Technologies Network Engineer Interview Questions, Process, and Tips

STP stands for Spanning Tree Protocol, used in network environments to prevent loops and ensure a loop-free topology.

• STP is a protocol used in network environments to prevent loops in Ethernet networks.

• It works by electing a root bridge and creating a loop-free topology by blocking certain ports.

• STP uses Bridge Protocol Data Units (BPDUs) to exchange information between switches.

• If a link fails, STP recalculates the to...read more

Switch learns MAC addresses by using the MAC address table.

• Switch learns MAC addresses by examining the source MAC address of incoming frames.

• It then adds the MAC address and the port it was received on to its MAC address table.

• If the MAC address is already in the table, the switch updates the port information.

• Switches use this table to forward frames only to the appropriate port based on the destination MAC address.

• Th...read more

DORA process is the sequence of steps followed by a device to obtain an IP address from a DHCP server.

• DORA stands for Discover, Offer, Request, Acknowledge.

• Discover - Client broadcasts a DHCP Discover message to find available DHCP servers.

• Offer - DHCP server responds with a DHCP Offer message containing an available IP address.

• Request - Client sends a DHCP Request message to request the offered IP address.

• Acknowledge ...read more

I troubleshoot network slowness by analyzing network traffic, checking for bottlenecks, and testing connectivity.

• Analyze network traffic using tools like Wireshark to identify any abnormal patterns or excessive bandwidth usage

• Check for network bottlenecks such as overloaded switches or routers, and address them accordingly

• Test connectivity between devices to ensure there are no issues with cables, ports, or network con

PCs in different VLANs can communicate through a router or layer 3 switch.

• Use a router or layer 3 switch to route traffic between VLANs

• Configure inter-VLAN routing on the router or layer 3 switch

• Ensure proper VLAN tagging and routing settings are in place