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Cisco Discovery Protocol ( CDP) is a proprietary data link layer protocol developed by Cisco Systems in 1994 [1] by Keith McCloghrie and Dino Farinacci. It is used to share information about other directly connected Cisco equipment, such as the operating system version and IP address. CDP can also be used for On-Demand Routing, which is a ...
Nextdoor Holdings, Inc. Nextdoor Holdings, Inc. is an American company that operates a hyperlocal social networking service for neighborhoods. The company was founded in 2008 and is based in San Francisco, California. Nextdoor launched in the United States in October 2011, [3] and is available in 11 countries as of May 2023. [4]
In computer science, locality-sensitive hashing ( LSH) is a fuzzy hashing technique that hashes similar input items into the same "buckets" with high probability. [1] (. The number of buckets is much smaller than the universe of possible input items.) [1] Since similar items end up in the same buckets, this technique can be used for data ...
Hop (networking) An illustration of hops in a wired network (assuming a 0-origin hop count [1] ). The hop count between the computers in this case is 2. In wired computer networking, including the Internet, a hop occurs when a packet is passed from one network segment to the next. Data packets pass through routers as they travel between source ...
User identifier. Unix-like operating systems identify a user by a value called a user identifier, often abbreviated to user ID or UID. The UID, along with the group identifier (GID) and other access control criteria, is used to determine which system resources a user can access. The password file maps textual user names to UIDs.
Link state packet. Link State Packet ( LSP) is a packet of information generated by a network router in a link state routing protocol that lists the router's neighbors. Link state packets can be further defined as special datagrams that determine the names of and the cost or distance to any neighboring routers and associated networks.
Caller ID spoofing. Caller ID spoofing is a spoofing attack which causes the telephone network's Caller ID to indicate to the receiver of a call that the originator of the call is a station other than the true originating station. This can lead to a display showing a phone number different from that of the telephone from which the call was placed.
Mesh network: each node is connected to an arbitrary number of neighbors in such a way that there is at least one traversal from any node to any other. Fully connected network: each node is connected to every other node in the network. Tree network: nodes are arranged hierarchically. This is the natural topology for a larger Ethernet network ...