What device generates the routing table using CIDR notations?

A router is a networking device that generates and maintains the routing table, which is essential for determining the best paths for data packets between different networks. When utilizing Classless Inter-Domain Routing (CIDR) notation, routers can efficiently allocate IP addresses and manage routing more flexibly than with traditional classful addressing. CIDR allows for variable-length subnet masks, which helps optimize the use of IP address space.

Routers implement routing protocols that facilitate the exchange of routing information with other routers, allowing them to dynamically update their routing tables based on the network's current state. This is crucial for proper data packet delivery across networks, as the router analyzes the destination IP of incoming packets and consults its routing table to determine the appropriate outgoing interface.

In contrast, a repeater is solely responsible for signal amplification and does not participate in any routing processes. A bridge operates at the data link layer to filter traffic and connect multiple network segments but does not create routing tables. A gateway, while capable of connecting different networks (potentially with different protocols), primarily serves as a translation point rather than generating routing tables in CIDR format. Thus, the role of generating the routing table specifically falls to the router.