CIT 370 - Chapter 2
VoIP gateway
- a device that converts signals form a campus's analog phone equipment into IP data than 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
VoIP (Voice over Internet Protocol)
- also known as IP telephony, is the use of any network (either public or private) to carry voice signals using TCP/IP protocols
structured cabling
- based on a hierarchical design using a high-speed backbone - describes the best way to install networking media to maximize performance and minimize upkeep
When interconnecting a switch port to a patch panel, which of the following information should be documented according to best practices? [Choose all that apply]
- the network device on the other end of the link - the port number of the switch used
MSA (master service agreement)
A contract that defines terms of future contracts.
RFP (Request for Proposal)
A document requesting that vendors submit a proposal for a product or service that a company wants to purchase.
fiber-optic cable
A form of cable that contains one or several glass or plastic fibers in its core. Data is transmitted via a pulsing light sent from a laser or LED (light-emitting diode) through the central fiber or fibers. - two types: SMF (single-mode fiber) or MMF (multimode fiber)
network diagrams
A graphical representation of a network's devices and connections. - often the product of network mapping
wiring schematic
A graphical representation of a network's wired infrastructure.
Nmap
A scanning tool designed to assess large networks quickly and provide comprehensive, customized information about a network and its hosts.
upgrade
A significant change to an application's existing code, typically designed to improve functionality or add new features while also correcting bugs and vulnerabilities.
STP (shielded twisted pair)
A type of copper-based cable containing twisted-pair wires that are not only individually insulated, but are also surrounded by a shielding made of a metallic substance such as foil. - terminated with an RJ-45 connector
UTP (Unshielded Twisted Pair)
A type of copper-based cable that consists of one or more insulated twisted-pair wires encased in a plastic sheath, which does not contain additional shielding for the twisted pairs.
crosstalk
A type of interference caused by signals traveling on nearby wire pairs infringing on another pair's signal.
EMI (electromagnetic interference)
A type of interference that can be caused by motors, power lines, televisions, copiers, fluorescent lights, or other sources of electrical activity.
110 block
A type of punchdown block designed to terminate Cat 5 or better twisted-pair wires and typically used to handle data connections rather than telephone connections.
66 block
A type of punchdown block designed to terminate telephone connections.
patch panel
A wall- or rack-mounted panel where cables converge in one location.
horizontal cabling
Cabling that connects workstations to the closest data room and to switches housed in the room
avoid EMI
Install 3ft away from fluorescent lights or other sources of EMI
You've decided to run an Nmap scan on your network. What app could you open to perform this task? Choose all that apply.
Zenmap, Command Prompt, PowerShell
plenum cabling
if you run cable in the plenum the area above the ceiling tile or below the subflooring make sure that cable sheath is plenum-rated and consult with local electric installation codes to be certain - a plenumrated cable is coated with a flame-resistant jacket that produces less smoke than regular cable
patch cable
is relatively short (usually between 3 and 25 feet) length of cabling with connectors at both ends
racks
large data center can contain rows of these to hold various network equipment
What is the first step of inventory management?
list all components on the network
patch panels
use to organize and connect lines - pass the data along through the connection - do help keep lines organized as they run from walls to racks to network devices, and they make it easy to switch out patch cables or variable lengths when devices are moved or changed
What type of diagram shows a graphical representation of a network's wired infrastructure?
wiring schematic
system life cycle
The process of designing, implementing, and maintaining an entire network. - major part of this process is the removal and disposal of outdated assets, and the addition of compatible, updated devices
patch management
The process of monitoring the release of new patches, testing them for use on networked devices, and installing them.
bend radius
The radius of the maximum arc into which you can loop a cable before you will cause data transmission errors. Generally, a twisted pair cable's bend radius is equal to or greater than four times the diameter of the cable.
MDF (Main Distribution Frame or facility)
also known as the main cross connect, the centralized point of interconnection between an organization's LAN or WAN and a service provider's facility - can refer either to the racks holding the network equipment or the room that houses both the racks and the equipment
data room
enclosed space that holds network equipment
Verify Continuity
use a cable tester to verify that each segment of cabling you install transmits data reliably
MLA (master license agreement)
A contract that 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.
KVM (keyboard, video, and mouse switches)
A device that connects the equipment in a rack to a single console to provide a central control portal for all devices on the rack.
rack diagram
A drawing that shows the devices stacked in a rack system and is typically drawn to scale.
IDF (intermediate distribution frame)
A junction point between the MDF and concentrations of fewer connections— for example, those that terminate in a data closet. - provides an intermediate connection between the MDF and end-user equipment on each floor and in each building
punchdown tool
A pointed tool used to insert twisted-pair wire into receptors in a punchdown block to complete a circuit.
patch
A correction, improvement, or enhancement to part of a software application, often distributed at no charge by software vendors to fix a bug in their code or to add slightly more functionality.
punchdown block
A device used to connect network cables from equipment closets or rooms to other parts of a building. Connections to networking equipment such as hubs or switches are established from this device. Also used in telecommunications wiring to distribute phone cables - panel of voice or data receptors into which twisted-pair wire is is inserted, or punched down, using a punchdown tool to complete a circuit
MOU (memorandum of understanding)
A document presenting the intentions of two or more parties to enter into a binding agreement, or contract. - not a legally binding document (although there are exceptions), does not grant extensive rights to either party, provides no legal recourse, and is not intended to provide a thorough coverage of the agreement to come.
SOW (statement of work)
A document that details the work that must be completed for a particular project, including specifics such as tasks, deliverables, standards, payment schedule, and work timeline - is legally binding, meaning it can be enforced in a court of law.
A transceiver was recently damaged by a lightning strike during a storm. How might you decide whether the ISP is responsible for replacing this device, or whether your company must foot the bill?
Look at whether the device is located on the ISP's side of the demarc
Refer to the following statements: This type of diagram depicts how devices are interconnected to each other using wires and cabling2) This type of diagram depicts the arrangement of devices and how they communicate with each other.Which diagram types are being described?
Stmt 1 is physical network diagram while stmt 2 is a logical one
demarc (demarcation point)
The point of division between a telecommunications service carrier's network and a building's internal network. - the device that marks where a telecommunications service provider's network ends and the organization's network begins - the device where the WAN ends and the LAN begins
network mapping
The process of discovering and identifying the devices on a network.
inventory management
The process of monitoring and maintaining all the assets that make up a network.
rollback
The process of reverting to a previous version of a software application after attempting to patch or upgrade it.
You have been asked to set up a new data center. Before you proceed with the actual setup, you need to create a rack diagram of an existing rack that you want to use. Which of the following could be the reason for you to create one such diagram? [Choose all that apply].
To determine the quantity of servers you need to purchase - to manage the size of the equipment to fit into the rack
cable trays
Unit or assembly of unit sections and associated fittings forming a rigid structural system used to support cables
Which device converts signals from a campus's analog phone equipment into IP data that can travel over the Internet?
VoIP gateway
cinch cables loosely
avoid cinching cables so tightly with cable ties that you squeeze their outer covering, a practice that leads to difficult-to-diagnose data errors
backbone cabling
consists of the cables or wireless links that provide interconnection between the entrance facility and MDF, and between the MDF and IDFs. - on large, modern networks, they are composed of fiber-optic cable
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
termination
don't leave more than 1 inch of exposed (stripped) cable before a twisted-pair - doing so increases the possiblity of transmission interference between wires
A technician from your ISP has arrived to help you troubleshoot a weak WAN connection. To what location do you take her?
entrance facility
slack in cable runs
measure first, measure again, and always leave some slack in cable runs
installation
new software, must be installed on the relevant devices and incorporated with network resources
Which of these is considered a secure place to store a list of documented network passwords?
password manager
You need to connect a new network printer to a nearby wall jack. What kind of cable should you use?
patch cable
You need to highlight the location of physical servers and network devices mounted on standardized frames that are installed within a datacenter to a new colleague. Which of the following types of diagrams should you show?
rack diagram
If you're shopping for a rack switch, what component on the switch tells you it can be mounted to a rack?
rack ears
Which of the following devices are you likely to find in the MDF? Choose all that apply.
routers, switches, KVM switch
entrance facility
the location where an incoming network service enters a building and connects with the building's backbone cabling
work area
this area encompasses workstations, printer,s and other network devices, and ll the patch cables, wall jacks, and horizontal cabling necessary to connect these devices to a data room
VoIP endpoints
An end user device or application that gives the user access to VoIP services on a network.
protect cables
Avoid laying cables across the floor where it might sustain damage from rolling chairs or foot traffic
