![cage 1.3.9 cage 1.3.9](https://media.springernature.com/original/springer-static/image/chp%3A10.1007%2F978-981-15-8075-8_1/MediaObjects/499882_1_En_1_Fig28_HTML.png)
Active back-planes are even more complicated and thus have a non-zero risk of malfunction. Common myth around passive backplane, even if it is single, is not usually considered a SPOF. The distinction between the two isn't always clear, but may become an important issue if a whole system is expected to not have a single point of failure (SPOF). Active backplanes include chips which buffer the various signals to the slots. Any desired arbitration logic is placed on the daughter cards. True passive backplanes offer no active bus driving circuitry. Due to limitations inherent in the Peripheral Component Interconnect (PCI) specification for driving slots, backplanes are now offered as passive and active. Only components are connectors, capacitors, resistors and voltage indicator LEDs.īackplanes have grown in complexity from the simple Industry Standard Architecture (ISA) (used in the original IBM PC) or S-100 style where all the connectors were connected to a common bus. ISA Passive Backplane showing connectors and parallel signal traces on back side. These cable sets have a transmitter board located in the computer, an expansion board in the remote backplane, and a cable between the two.Īctive versus passive backplanes In addition, there are bus expansion cables which will extend a computer bus to an external backplane, usually located in an enclosure, to provide more or different slots than the host computer provides.
#CAGE 1.3.9 SERIAL#
To transmit information, Serial Back-Plane technology uses a low-voltage differential signaling transmission method for sending information. For example, DIN 41612 connectors (used in the VMEbus system) have three durability grades built to withstand (respectively) 50, 400 and 500 insertions and removals, or "mating cycles". A backplane does not suffer from this problem, so its service life is limited only by the longevity of its connectors. In a cabled system, the cables need to be flexed every time that a card is added or removed from the system this flexing eventually causes mechanical failures. If you don't think any of the above situations apply, you can use this feedback form to request a review of this block.Early microcomputer systems like the Altair 8800 used a backplane for the processor and expansion cards.īackplanes are normally used in preference to cables because of their greater reliability. Contact your IT department and let them know that they've gotten banned, and to have them let us know when they've addressed the issue.Īre you browsing GameFAQs from an area that filters all traffic through a single proxy server (like Singapore or Malaysia), or are you on a mobile connection that seems to be randomly blocked every few pages? Then we'll definitely want to look into it - please let us know about it here. You'll need to disable that add-on in order to use GameFAQs.Īre you browsing GameFAQs from work, school, a library, or another shared IP? Unfortunately, if this school or place of business doesn't stop people from abusing our resources, we don't have any other way to put an end to it. When we get more abuse from a single IP address than we do legitimate traffic, we really have no choice but to block it. If you don't think you did anything wrong and don't understand why your IP was banned.Īre you using a proxy server or running a browser add-on for "privacy", "being anonymous", or "changing your region" or to view country-specific content, such as Tor or Zenmate? Unfortunately, so do spammers and hackers. IP bans will be reconsidered on a case-by-case basis if you were running a bot and did not understand the consequences, but typically not for spamming, hacking, or other abuse. If you are responsible for one of the above issues. Having an excessive number of banned accounts in a very short timeframe.Running a web bot/spider that downloaded a very large number of pages - more than could possibly justified as "personal use".Automated spam (advertising) or intrustion attempts (hacking).Your current IP address has been blocked due to bad behavior, which generally means one of the following: