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An air gapped network (right) with no connection to a nearby internet-connected network (left) An air gap, air wall, air gapping [1] or disconnected network is a network security measure employed on one or more computers to ensure that a secure computer network is physically isolated from unsecured networks, such as the public Internet or an unsecured local area network. [2]
For outages due to issues with general computer systems, the term computer outage (also IT outage or IT drought) can be used. The term is also commonly applied in industrial environments in relation to failures in industrial production equipment. Some facilities measure the downtime incurred during a work shift, or during a 12- or 24-hour period.
Network congestion in data networking and queueing theory is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle. . Typical effects include queueing delay, packet loss or the blocking of new connectio
A few networks in France continue to use a 440 Hz/0.5 s sequence in place of the ETSI recommended 425 Hz/0.5 s sequence, but this is gradually being replaced. The ETSI recommendation is also the default (i.e. non-localized) busy tone generated by mobile phones that follow the GSM & 3GPP family of standards .
Disconnect with data If the target asserts STOP# and TRDY# at the same time, this indicates that the target wishes this to be the last data phase. For example, a target that does not support burst transfers will always do this to force single-word PCI transactions. This is the most efficient way for a target to end a burst. Disconnect without data
Computer cooling is required to remove the waste heat produced by computer components, to keep components within permissible operating temperature limits. Components that are susceptible to temporary malfunction or permanent failure if overheated include integrated circuits such as central processing units (CPUs), chipsets , graphics cards ...
Daylight saving time (DST), also referred to as daylight saving(s), daylight savings time, daylight time (United States and Canada), or summer time (United Kingdom, European Union, and others), is the practice of advancing clocks to make better use of the longer daylight available during summer so that darkness falls at a later clock time.
[87] [88] The film beat the 3-day weekend record set by Superman (1978) of $10.4 million [89] in its third weekend (but not its 4-day weekend gross of $13.1 million) and the opening weekend gross of the 1978 reissue of Star Wars of $10.1 million. [88] The Motion Picture earned $17 million within a week.