VERSATILE INFOSECURITY PVT. LTD. Network Security Engineer Interview Questions and Answers

VLAN stands for Virtual Local Area Network. It is a logical grouping of network devices that share the same broadcast domain.

• VLANs are used to improve network performance, security, and management.

• They allow network administrators to segment a large network into smaller, more manageable subnetworks.

• Each VLAN has its own broadcast domain, which reduces network congestion and improves performance.

• VLANs can also be used t...read more

STP stands for Spanning Tree Protocol. It is used to prevent loops in a network and ensure redundancy.

• STP is a protocol used in network switches to prevent loops in a network.

• It ensures that there is only one active path between any two network devices.

• STP blocks redundant paths to prevent loops and ensures network redundancy.

• STP is important for network stability and preventing broadcast storms.

• Examples of STP variant...read more

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