What do you understand by gateway or Router?

The correct answer is Node that is connected to two or more networks.

Key Points

• A gateway or router is a device that connects two or more networks, allowing them to communicate with each other.
  • Routers operate at the network layer (Layer 3) of the OSI model and are responsible for forwarding data packets between networks based on their IP addresses.
  • Gateways can operate at various layers of the OSI model and can perform protocol conversions to enable communication between different network architectures or protocols.
  • Routers use routing tables and protocols such as OSPF, BGP, and RIP to determine the best path for data packets to reach their destination.
  • Gateways are often used to connect different types of networks, such as a local area network (LAN) to a wide area network (WAN) or to the internet.
  • Common manufacturers of routers and gateways include Cisco, Juniper Networks, and Netgear.

Additional Information

• Routers can also provide additional functions such as network address translation (NAT), firewall protection, and quality of service (QoS) management.
• Gateways can be used to connect networks that use different communication protocols, such as Ethernet and Token Ring.
• Modern routers often come with built-in wireless access points to provide Wi-Fi connectivity in addition to wired connections.
• Gateways can also act as proxies or firewalls to control traffic between networks and enhance security.