Nexus System Network Security Engineer Interview Questions and Answers

Data link layer is responsible for transferring data between adjacent network nodes.

• Data link layer ensures error-free transmission of data over the physical layer.

• It divides data into frames for transmission.

• It also handles flow control and error detection/correction.

• Examples include Ethernet, Wi-Fi, and PPP protocols.

DHCP stands for Dynamic Host Configuration Protocol, which is a network management protocol used to assign IP addresses automatically to devices on a network.

• DHCP eliminates the need for manual IP address configuration on each device

• It allows devices to obtain IP addresses, subnet masks, default gateways, and DNS server addresses automatically

• DHCP servers lease IP addresses to devices for a specific period of time

• DHCP ...read more

The preferred location for a Network Security Engineer is typically in a secure office environment with access to necessary equipment and resources.

• Secure office environment with restricted access to unauthorized personnel

• Access to necessary equipment and resources such as servers, firewalls, and monitoring tools

• Proximity to the IT team for collaboration and communication

• Possibly located near the data center for quick

STP (Spanning Tree Protocol) is used to prevent loops in a network by blocking redundant paths between switches.

• STP elects a root bridge to serve as the central point in the network

• Each switch determines the best path to the root bridge based on the lowest path cost

• Ports on switches are designated as root ports, designated ports, or blocking ports to create a loop-free topology