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A wildcard mask is a mask of bits that indicates which parts of an IP address are available for examination. In the Cisco IOS, [1] they are used in several places, for example:
A special definition exists for the IP address 255.255.255.255. It is the broadcast address of the zero network or 0.0.0.0, which in Internet Protocol standards stands for this network, i.e. the local network. Transmission to this address is limited by definition, in that it is never forwarded by the routers connecting the local network to ...
Printable version; In other projects Wikidata item ... 255.255.255.255/32 255.255.255.255 1: ... Text is available under the Creative Commons Attribution-ShareAlike 4 ...
255 is a special number in some tasks having to do with computing. This is the maximum value representable by an eight-digit binary number, and therefore the maximum representable by an unsigned 8-bit byte (the most common size of byte, also called an octet), the smallest common variable size used in high level programming languages (bit being smaller, but rarely used for value storage).
All receivers capture the network packet. The address 255.255.255.255 is used for network broadcast. In addition, a more limited directed broadcast uses the all-ones host address with the network prefix. For example, the destination address used for directed broadcast to devices on the network 192.0.2.0 / 24 is 192.0.2.255.
Using octets with all eight bits set, the representation of the highest-numbered IPv4 address is 255.255.255.255. An IPv6 address consists of sixteen octets, displayed in hexadecimal representation (two hexits per octet), using a colon character (:) after each pair of octets (16 bits are also known as hextet ) for readability, such as 2001:0db8 ...
In computer science, a mask or bitmask is data that is used for bitwise operations, particularly in a bit field.Using a mask, multiple bits in a byte, nibble, word, etc. can be set either on or off, or inverted from on to off (or vice versa) in a single bitwise operation.
IPv4—Internet Protocol version 4; IPv6—Internet Protocol version 6; IPX—Internetwork Packet Exchange; IR—Intermediate Representation; IRC—Internet Relay Chat; IrDA—Infrared Data Association; IRI—Internationalized Resource Identifier; IRP—I/O Request Packet; IRQ—Interrupt Request; IS—Information Systems