Vakrangee Interview Questions and Answers

Port forwarding is the process of redirecting network traffic from one IP address and port number combination to another.

• It allows external devices to access services on a private network

• It is commonly used for remote access, gaming, and hosting websites

• It involves configuring a router or firewall to forward traffic to a specific device on the network

• It can be a security risk if not configured properly

OSPF (Open Shortest Path First) is a routing protocol used to exchange routing information within a single autonomous system.

• OSPF is a link-state protocol

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

• It supports VLSM (Variable Length Subnet Masking)

• It uses multicast to send updates

• It has a hierarchical design with areas

• Example: OSPF is commonly used in enterprise networks

Subnetting is the process of dividing a network into smaller subnetworks.

• Subnetting helps in efficient utilization of IP addresses.

• It improves network performance and security.

• Subnetting is done by borrowing bits from the host portion of an IP address.

• CIDR notation is used to represent subnet masks.

• Example: 192.168.1.0/24 represents a network with 256 IP addresses.