CompTIA Network+ CH2

SOW

(statement of work) documents in detail the work that must be completed for a particular project, and includes specifics such as tasks, deliverables, standards, payment schedule, and work timeline. Legally binding

horizontal cabling

This is the cabling that connects workstations to the closest data room and to switches housed in the room. The maximum allowable distance for horizontal cabling is 100 m. This span includes 90 m to connect the network device in the data room to a data jack on the wall in the work area, plus a maximum of 10 m to connect the wall jack to a workstation.

Reversing Shared application upgrade

Use the application's automatic uninstall utility, or maintain a complete copy of the previous installation of the application and reinstall it over the upgrade.

Reversing Client software upgrade

Use the upgrade's automatic uninstall utility, or reinstall the previous version of the client on top of the upgrade.

patch panel

a panel of data receptors which can be mounted to a wall or a rack and which provides a central termination point when many patch cables converge in a single location.

patch cable

a relatively short (usually between 3 and 25 feet) length of cabling with connectors at both ends.

network diagrams

graphical representations of a network's devices and connections. These diagrams may show physical layout, logical topology, IP address reserves, names of major network devices, and types of transmission media.

VoIP endpoints

might be telephones sitting at each user's location or applications hosted on a user's computer or other device.

backbone cabling

consists of the cables or wireless links that provide interconnection between the entrance facility and MDF, and between the MDF and IDFs. backbones are often composed of fiber-optic cable

data room

the enclosed space that holds network equipment. These spaces might have requirements for size, clearance around equipment, wall materials, and physical security (such as a locked door).

Nmap

Popular tool to assist in detecting, identifying, and monitoring the devices on your network

Reserving Operating system upgrade

Prior to the upgrade, make a complete backup of the system; to roll back, restore the entire system from the backup; uninstall an operating system upgrade only as a last resort.

wall jacks

The TIA/EIA standard calls for each wall jack to contain at least one voice and one data outlet

Fiber-optic cable

a form of cable that contains one or several glass or plastic fibers in its core and comes in two types: SMF (single-mode fiber) or MMF (multimode fiber). ransmits data via pulsing light sent from a laser or LED.

MDF equipment

In practice, the term MDF can refer either to the racks holding the network equipment or the room that houses both the racks and the equipment. The MDF and the entrance facility might be in the same data room, or they could be in separate rooms, depending on the layout of the building. Connections branching out from the MDF include Ethernet cables connecting to nearby work areas, large cables running to IDFs

PVC

Made from a cheaper plastic than plenum that is toxic when burned

plenum

coated with a flame-resistant jacket that produces less smoke than regular cable

VoIP gateway

device that converts signals from a campus's analog phone equipment into IP data that can travel over the Internet, or which converts VoIP data from an internal IP network to travel over a phone company's analog telephone lines.

rack diagram

drawings show the devices stacked in a rack system and are typically drawn to scale

inventory management

refers to the monitoring and maintaining of all the assets that make up a network.

entrance facility

The location where an incoming network, such as the Internet, connects with the school or corporate network. For large networks, the entrance facility might be an equipment room or data closet. For small networks, it might simply be equipment and cabling mounted to the side of a building.

patch management

The process of monitoring the release of new patches, testing them for use on networked devices, and installing them

Software rollback

the process of reverting to a previous version of software after attempting to patch or upgrade it.

crosstalk

transmission interference between wires. prevent this by terminating twisted-pair cabling, don't leave more than 1 inch of exposed (stripped) cable before a twisted-pair termination.

Reversing Operating system patch

Use the patch's automatic uninstall utility

IDF equipment

Can refer either to the racks holding the network equipment or the room that houses both the racks and the equipment. There can be many IDFs connecting internal portions of the network. The TIA/EIA standard specifies at least one IDF per floor, although large organizations may have several data rooms or closets per floor to better manage the data feed from the main data facilities. Connections from the IDF branch out to workstations in an extended star topology

TIA/EIA-568

Commercial Building Wiring Standard or structured cabling, describes uniform, enterprise-wide cabling systems, regardless of who manufactures or sells the various parts used in the system.

Licensing restrictions

Define who is allowed to use an application and for how long, how many users are allowed to install or access it, whether the application can be made available over a company's network or the Internet, and how many backup copies of the application may be stored.

structured cabling standard

Describes the best way to install networking media to maximize performance and minimize upkeep. The principles apply no matter what type of media, transmission technology, or networking speeds are involved. Based on a hierarchical design and assumes a network is set up in a star topology.

Rack Systems

Generally, racks come in two-post and four-post varieties, though six-post racks are also available. They can also be open framed, which provides greater accessibility, or enclosed, which provides greater protection.

UTP

(unshielded twisted pair) cable is a type of copper-based cable that consists of one or more insulated twisted-pair wires encased in a plastic sheath transmits data via electric signals

EIA

(Electronic Industries Alliance) EIA was actually dissolved in 2011. Oversight of the relevant standards was assigned to ECA, the Electronic Components, Assemblies, Equipment & Supplies Association. The standards brand name EIA, however, continues to be used.

TIA

(Telecommunications Industry Association)

VoIP

(Voice over IP), also known as IP telephony, is the use of any network (either public or private) to carry voice signals using TCP/IP protocols.

demarc

(demarcation point) the device that marks where a telecommunications service provider's network ends and the organization's network begins

EMI

(electromagnetic interference), which is a type of interference that can be caused by motors, power lines, televisions, copiers, fluorescent lights, or other sources of electrical activity.

IDF

(intermediate distribution frame) IDF provides an intermediate connection between the MDF and end-user equipment on each floor and in each building.

KVM

(keyboard, video, and mouse) switches which connect to a single console to provide a central control portal for all devices on the rack.

MDF

(main distribution frame or main distribution facility) —Also known as the MC (main cross-connect). The centralized point of interconnection for an organization's LAN or WAN.

MLA

(master license agreement) grants a license from a creator, developer, or producer, such as a software producer, to a third party for the purposes of marketing, sublicensing, or distributing the product to consumers as a stand-alone product or as part of another product.

MSA

(master service agreement) is a contract that defines the terms of future contracts between parties, such as payment terms or arbitration arrangements.

MOU

(memorandum of understanding) documents the intentions of two or more parties to enter into a binding agreement, or contract, and is sometimes used between an informal handshake and the legally binding signatures on contracts.

VoIP PBX

(private branch exchange) dedicated telephone switch or a virtual switching device that connects and manages calls within a private organization, and manages call connections that exit the network through a VoIP gateway.

RFP

(request for proposal) a request to vendors to submit a proposal for a product or service your company wants to purchase

SLA

(service-level agreement) is a legally binding contract or part of a contract that defines, in plain language and in measurable terms, the aspects of a service provided to a customer, such as the service provided by an ISP. Details specified might include contract duration (minimum or maximum), guaranteed uptime, problem management, performance benchmarks, and termination options.

STP

(shielded twisted pair) cable is a type of copper-based cable containing twisted-pair wires that are not only individually insulated, but also surrounded by a shielding made of a metallic substance such as foil. transmits data via electric signals

system life cycle

The process of designing, implementing, and maintaining an entire network. A major part of this process is the removal and disposal of outdated assets, and the addition of compatible, updated devices.

work area

This area encompasses workstations, printers, and other network devices, and all the patch cables, wall jacks, and horizontal cabling necessary to connect these devices to a data room.

patch

a correction, improvement, or enhancement to software.

wiring schematic

a graphical representation of a network's wired infrastructure. In its most detailed form, it shows every wire necessary to interconnect network devices and the locations of those wires.

wiki

a website that can be edited by users.

Software upgrade

major change to a software package that enhances the functionality and features of the software, while also correcting bugs and vulnerabilities.