CCNA 3 Labs and Study Guide - BINARYBB.INFO – @jagalbraith

Vocabulary Exercise: Completion
Complete the paragraphs that follow by filling in appropriate words and phrases.
Chapter 5: LAN Design and Switches 235
The first step in designing a LAN is to establish and document the goals of the design.
Most LANs are designed to meet four major requirements:
■ Functionality, which enables users to meet their job requirements with speed and reliability
■ Scalability, which means that the network should be designed with future growth in mind
■ Adaptability, which means that the network design will easily incorporate new technologies
■ Manageability, which facilitates network monitoring
Servers can be categorized into two distinct classes:
■ Enterprise servers support all the users on the network by offering services such as e-mail, DNS, and
corporate intranet access.
■ Workgroup servers support a specific set of users, offering services such as word processing and file
sharing specific to that group’s needs.
Enterprise servers should be placed in the MDF, and workgroup servers should be placed in the IDF closest
to the users who need it.
One of the most important components to consider when designing a network is the cables/cabling/cable
plant because the physical layer is the cause of most network problems.
Fiber-optic cable should be used in the backbone and risers in all cable designs. Category 5e or Category 6
UTP cable should be used in the horizontal runs. The cable upgrade should take priority over any other
necessary changes.
The TIA/EIA-568-A standard specifies that every device connected to the network should be linked to a
central location with horizontal cabling. In a simple star topology, this central location is the MDF (acronym)
and includes one or more HCCs used to connect the Layer 1 horizontal cabling coming into the wiring
closet from work areas to the Layer 2 LAN switch inside the wiring closet.
In larger network environments, multiple wiring closets are often needed. These extra or secondary wiring
closets are referred to as IDFs.
A VCC in each wiring closet is used to interconnect the various IDFs to the central MDF. The type of
backbone or vertical cabling used is usually fiber-optic because the cable lengths are typically longer than
the 100-meter limit for Category 5e UTP cable.
Complete Figure 5-1 by filling in all the missing text labeling the components of this multibuilding
campus LAN.