This is a sample of the diagrams submitted with Network Project benchmark assignments for TIE (with Craig's notes).
Notice that all the diagrams show a connection to the Internet at one "end" of the network. Most are to T1 lines (1.5Mbps).
F/O is "fiber optic" cable; other types are coaxial, twisted pair, and ethernet (category 1-6).
The "Cisco Router" here likely includes a CSU/DSU interface card such as this one.
A Cisco 6509 is pictured here and described here. (A "Sup II" or "Sup 750" is a "supervisor engine," which is the "brains" of a smart switch: it usually is programmable through "flashing," and contains portions of the IOS, or "internetwork operating system"; see here for more on supervisor engines.)
A Cisco 4506 is pictured here and described here. A "chassis" is the "frame" into which are mounted the various components of the network, including routers, switches and other modules. A "line card" is a modular electronic circuit on a printed circuit board, the electronic circuits on the card interfacing the telecommunication lines (or ethernet cables) coming from the subscribers or clients (such as copper wire or optical fibers) to the rest of the telecommunications access or other kind of network (source: http://en.wikipedia.org/wiki/Line_card)
An "IDF" (Intermediate Distribution Frame) is used in large-scale installations where equipment varies by area of the installation or where the number of ports or wires required would be prohibitive.
A "WAP" is a wireless access point.
"VOIP" is "voice over IP," allowing for routing of telephone and fax using IP addresses.
A "T-1" line (also known as "Digital Signal 1" or DS1) is an internet communications line that transmits and receives (full duplex) at 1.544 Mbits/s (or Mbps).
RJ45 is how a particular type of connector, shown here, is typically referred to. It is used to connect twisted-pair wires to network devices. The correct name of this is 8P8C. Three speeds are possible on twisted pair networks: 10Base-T, 100Base-TX, and 1000Base-T. (See here.)
A 16-port fiber optic switch with 8 RJ45 ports is pictured and described here.
"PoE" is a way to power certain devices using ethernet cable, thus cutting down on the need to have power available at the exact location of an access point or other device. See here. A splitter like this one is typically used.
A "patch panel" or jackfield is a panel, often rack mounted, that houses cable connections. See here and here.
"A CSU/DSU (Channel Service Unit/Data Service Unit) is a hardware device about the size of an external modem that converts a digital data frame from the communications technology used on a local area network (LAN) into a frame appropriate to a wide-area network (WAN) and vice versa. For example, if you have a Web business from your own home and have leased a digital line (perhaps a T-1 or fractional T-1 line) to a phone company or a gateway at an Internet service provider, you have a CSU/DSU at your end and the phone company or gateway host has a CSU/DSU at its end." (source: http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci211866,00.html)
Here's a photo of a Cisco 3600 router.
Catalyst 2900 XL is a type of Cisco switch that is no longer available. 3500 XL Switches are their faster replacement. See here and here for photos.
"A switch probe, generally for use in testing cable harnesses, is for placement within a standard probe receptacle and can be removed and replaced as necessary." (http://www.freepatentsonline.com/5225773.html) Switch probes are often conntected to software-based analysis tools. For photo, see here. For fuller description, see here.
An "AP Controller" is a device that authenticates users on wireless access points. See here.
"The Intelligent Media Converter 7500 supports management capability for any combination of hot-swappable, intelligent "twister" and "redundant twister" modules. All intelligent "twister" modules offer transparent media conversion with low bit delay for maximizing the permitted length of Ethernet and Fast Ethernet segments, and provide an effective means for integrating coax, Category 3, 4, or 5 twisted-pair and singlemode or multimode fiber optic LAN segments." (for photo and more: http://www.shopping.com/xPO-Metrobility-Lancast-Media-Converter-7500-12-Slot-Chassis-Modular-expansion-base-7500-12HS-2D; more here. )
"The Cisco FastHub 400 10/100 Series of high-performance Fast Ethernet repeaters delivers unmatched flexibility and low-cost managed connectivity to the desktop. The FastHub 400 10/100 Series is a full line of products that includes 12- and 24-port 10/100 Fast Ethernet repeaters in managed and manageable versions. As the ideal complement to Catalyst 2900 Series XL autosensing 10/100 Fast Ethernet switches, the FastHub 400 10/100 Series provides ultra low-cost 10/100 autosensing desktop connectivity where dedicated bandwidth is not required. " (source: http://www.maxiis.com/Hubs2.htm.)
Note that the above diagram includes a separate building with its own LAN connected via a T1 line.
The "ICN Internet Proxy" is a device used to manage filtering on the Illinois Century Network. (http://filtering.illinois.net/filterindex.php)
Firewalls can be hardware or software based. See here for more. See here for more info and a photo of a hardware firewall device.
A "DMZ" is used to provide an "extranet," allowing external users access to resources on the network (scuh as web and email servers). See here and here for more. (See here for diagrams.)
Watch these videos: http://www.learnkey.com/prepcenter
Internetworking basics: http://www.cisco.com/en/US/docs/internetworking/technology/handbook/Intro-to-Internet.html
Symbols used in network diagrams: Cisco (http://www.edrawsoft.com/Cisco-Network-Templates.php) and general (http://www.edrawsoft.com/Network-Diagram-Templates.php)
Sample diagram: http://www.edrawsoft.com/images/network/WAN%20Diagram_Full.png
eDraw Network Diagrams software: http://www.edrawsoft.com/Network-Diagrams.php. (more)
Cisco network icons sets: http://www.cisco.com/web/about/ac50/ac47/2.html
Another diagraming software: http://www.smartdraw.com/
Routers and switches are examples of what Cisco calls "interfaces and modules". See this page for a list of such devices.