Wednesday, April 28, 2010

Which connectors are used with fiber-optic cabling?

ST optical fiber connector.Image via Wikipedia
The ST and SC connectors are the two most popular connectors available for fiber-optic cabling.  Other common fiber-optic connectors are FC, FDDI, LC, D4, MU, MT, AND MT-RJ.

The following is the ST (an AT&T trademark) connector.  The ST connector, also called the Straight Tip connector, uses a push-and-turn-to-lock system.   ST is probably the most popular connector for multimode networks, like most buildings and campuses.

The following is an SC connector, also called a Square Connector or Standard Connector, or Set and Click.  The SC connector has a molded plastic plug casing and a push/pull locking system.  At first, it was not widely used because it was much more expensive than the ST.  But, now it is only a little more expensive and very common.


Tuesday, April 27, 2010

Which network topology supports the longest maximum cable length?

10BASE-T Cable. Picture taken by Duncan Lock a...Image via Wikipedia
10BaseF networks, which operate at 10 megabits per second (Mbps), support the longest cable length with a maximum distance of 2,000 meters (m) or 2 kilometers (km).  10BaseF is also know as 10BaseFL.

Networks configured with a 10Base2 topology support a maximum cable length of 185 m.

Networks built on a 10Base5 topology support a maximum cable length of 500 m.

The 10BaseT and 100BaseT topologies support a maximum distance of 100 m between two devices.
Cable Considerations for Network Installations
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Command line reference A-Z

Computer directory listingImage via Wikipedia
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Sunday, April 25, 2010


System File CheckerImage via Wikipedia
Windows File Protection, System File Checker, and File Signature Verification

Click on the links below to learn how these work:

Windows File Protection

System File Checker   

File Signature Verification
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