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MCSE: Server Infrastructure

Solutions Expert

The globally recognized standard for IT professionals

The Microsoft Certified Solutions Expert (MCSE): Server Infrastructure certification validates that you have the skills needed to run a highly efficient and modern data center, with expertise in identity management, systems management, virtualization, storage, and networking.

MCSE 2016 Boot Camp : Azure Boot camp : CCNA / CCNAX Boot Camp:

Earning an MCSE: Server Infrastructure certification will qualify you for such jobs as computer support specialist and information security analyst.

Heard about the coming Windows Server 2012 R2 updates? Read the FAQs to find out how we are updating our certifications.

Step	Title	Optional training	Required exam
1	Installing and Configuring Windows Server 2012	410	410
2	Administering Windows Server 2012	411	411
3	Configuring Advanced Windows Server 2012 Services After successfully completing steps 1-3, you'll earn a Microsoft Certified Solutions Associate (MCSA): Windows Server 2012 certification.	412	412
4	Designing and Implementing a Server Infrastructure	413	413
5	Implementing an Advanced Server Infrastructure	414	414

Fiber-Optic Cable

In almost every way, fiber-optic cable is the ideal cable for data transmission. Not only does this type of cable accommodate extremely high bandwidths, but it also presents no problems with EMI and supports durable cables and cable runs as long as several kilometers. The two disadvantages of fiber-optic, however, are cost and installation difficulty.

The center conductor of a fiber-optic cable is a fiber that consists of highly refined glass or plastic designed to transmit light signals with little loss. A glass core supports a longer cabling distance, but a plastic core is typically easier to work with. The fiber is coated with a cladding that reflects signals back into the fiber to reduce signal loss. A plastic sheath protects the fiber. See Figure 3.17.

A fiber-optic network cable consists of two strands separately enclosed in plastic sheaths—one strand sends and the other receives. Two types of cable configurations are available: loose and tight configurations. Loose configurations incorporate a space between the fiber sheath and the outer plastic encasement; this space is filled with a gel or other material. Tight configurations contain strength wires between the conductor and the outer plastic encasement. In both cases, the plastic encasement must supply the strength of the cable, while the gel layer or strength wires protect the delicate fiber from mechanical damage.

Optical fiber cables don’t transmit electrical signals. Instead, the data signals must be converted into light signals. Light sources include lasers and light-emitting diodes (LEDs). LEDs are inexpensive but produce a fairly poor quality of light suitable for less-stringent applications.

A laser is a light source that produces an especially pure light that is monochromatic (one color) and coherent (all waves are parallel). The most commonly used source of laser light in LAN devices is called an injection laser diode (ILD). The purity of laser light makes lasers ideally suited to data transmissions because they can work with long distances and high bandwidths. Lasers, however, are expensive light sources used only when their special characteristics are required.

The end of the cable that receives the light signal must convert the signal back to an electrical form. Several types of solid-state components can perform this service.

One of the significant difficulties of installing fiber-optic cable arises when two cables must be joined. The small cores of the two cables (some are as small as 8.3 microns) must be lined up with extreme precision to prevent excessive signal loss.

Further Information

Fiber-Optic Characteristics

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