# Shared Flashcard Set

## Details

Chapter 3 Book
Notes
96
Computer Networking
Not Applicable
05/06/2013

Term
 What were the first two generation topologies?
Definition
 Bus and Ring
Term
 Which topology needs terminiation at each end of the cable to prevent a signal sent form one computer from reflecting at the ends of the cable?
Definition
 Bus
Term
 Which topology moves data traffic in a circle fron one computer to the next in the same direction?
Definition
 Ring
Term
 This network topology allows all comptuers in the network to connect to a central wiring point like hub or switch and offers fault tolerance.
Definition
 Star
Term
 The capability of any system to continue functioning after some part of the system has failed.
Definition
 Fault Tolerance
Term
 When dealing with hybrids, a _____ is the bus cable to which the computers on an Ethernet network connect.
Definition
 Segment
Term
 The manner in which the physical comonents of a network are arranged.
Definition
 Physical Topology
Term
 A network topology defined by signal paths as opposed to the physical layout of the cables.
Definition
 Logical Topology
Term
 A mix or blend of two different topologies. A star-bus topology is one type of hybrid topology.
Definition
 Hybrid Topology
Term
 A hybrid of the Token Ring topology and the Physical star.
Definition
 Star-Ring Topology
Term
 Topology in which each computer has a direct or indirect connection toi every other computer in a network. Any node on the network can forward traffic to other nodes.
Definition
 Mesh Topology
Term
 A mesh topology connects _____ or more routes.
Definition
 Two
Term
 What are the two types of meshed topologies?
Definition
 Partially Meshed and Fully Meshed
Term
 A Mesh toplogy in which not all of the nodes are directly connected.
Definition
 Partial Mesh
Term
 A Mesh network where every node is directly connected to every other node.
Definition
 Full Mesh
Term
 What is the formula of a Mest Topology?
Definition
 y = number of computers and Number of connections = y(y-1)/2
Term
 Topology in which one device communicates with more than one other device on a network.
Definition
 Point-to-Multipoint Topology
Term
 A network of two single devices communiacting with each other.
Definition
 Point-to-Point Topology
Term
 A practical application of a topology and other critical technologies that provides a method to get data from one comptuer to anotherh on a network.
Definition
 Network Technology
Term
 What are the three bases of the Network Technology?
Definition
 10BaseT, 1000BaseF, and 10GBaseLX
Term
 What are the three groups of cabling?
Definition
 Coaxial, Twisted Pair, and Fiber-Optic
Term
 This type of cable contains a central conductor wire surrounded by an insulating material, which in turn is surrounded by a braded metal shield.
Definition
 Coaxial Cable
Term
 Coaxial cables are shielded from _____.
Definition
 EMI
Term
 Interference from one device to another resulting in poor perfornace in the devices capabilities.
Definition
 Electromagnetic Interference
Term
 What are four devices that generates EMI?
Definition
 Lights, Fans, Copy Machines, and Refridgerators
Term
 Early bus topology netowrks used coaxial cable to connect computers together using _____ connectors.
Definition
 BNC
Term
 All BNC Connectors used for 10Base2 coaxial cables, have to be locked into place by turning the locking right _____ degrees.
Definition
 90
Term
 Even earlier bus networks used thick cable that required _____ which literally piernced the cable.
Definition
 Vampire Taps
Term
 ISP companies use _____ connectors that scrws on, making for asecure connection.
Definition
 F
Term
 Cable modems connect using either _____ or _____.
Definition
 RG-6; RG-59
Term
 _____ was used primarily for cable television.
Definition
 RG-59
Term
 All coaxial cables have a _____ rating.
Definition
Term
 Ratings developed by the U.S. Military to provide a quick referance for the different types of coaxial cables.
Definition
Term
 The only important measure of coax cabling is its _____ rating.
Definition
 Ohm
Term
 Electronic measurement of a cable's or an electronic components impedance.
Definition
 Ohm Rating
Term
 Cable companies use _____ to split coaxial cable to different devices.
Definition
 Coaxial Splitters
Term
 Twisted pair of cables, the most overwhelming common type of cabling used in networks.
Definition
 Twisted Pair
Term
 ______ networks is composed of multiple pairs of wires, twisted around each other at specific intervals.
Definition
 Twisted Pair
Term
 The twists in UTP cables reduce interference called _____.
Definition
 Crosstalk
Term
 Electrical signal interference between two cables that are in close proximity ot each other.
Definition
 Crosstalk
Term
 What are the two types of twisted-pair cabling used in Networks?
Definition
 STP and UTP
Term
 A popular cabling for telephone a nd networks composed of pairs of wires twisted around each other at specific intervals. No shielding for EMI and provides an inexpensive and flexible means to cable networks.
Definition
 UTP
Term
 A grade assigned to cable to help network installers get the right cable for the right network technology.
Definition
 Category Ratings
Term
 What are the four International groups that set the standards for cabliing and networking in general?
Definition
 ISO, ANSI, TIA, and EIA
Term
 The maximum amount of data that goes through the cable per second is called the _____.
Definition
 Bandwidth
Term
 The capacity of a network to transmit a given amount of data during a given period.
Definition
 Bandwidth
Term
 For current networks, developers have implemented _____, chich means they can squeeze mor ebits ito the same signal as long as the cable can handle it.
Definition
 Bandwidth-Efficient Encoding Schemes.
Term
 Which kind of Catetgory Cabling does most neworks use?
Definition
 CAT 5e
Term
 What two ways can someone find the CAT rating?
Definition
 Manufacturers box and on the cable itself
Term
 Connectors used for UTP cable on both telephone and network connections.
Definition
 Registered Jack (RJ) Connectors
Term
 Telephones use _____ connectors, designed to support up to two pairs of wires.
Definition
 RJ-11
Term
 Networks use _____ connectors.
Definition
 RJ-45
Term
 A high speed physical medium for transmitting data that uses light rather than electricity to transmit data and is made of high-purity glass fibers sealed within a flexible opaque tube.
Definition
 Fiber-Optic
Term
 What four components make up a fiber optic cable?
Definition
 Glass fiber, cladding, buffer, and insulating jacket.
Term
 What is known as the fore of a fiber optic cable?
Definition
 Glass Fiber
Term
 The part of the fiber optic cable that makes the light reflect down the fiber.
Definition
Term
 Type of material to give the fiber optic cable strength.
Definition
 Buffer
Term
 The external plastic covering of a fiber-optic cable.
Definition
 Insulating Jacket
Term
 The most common fiber optica cable size is _____ and _____.
Definition
 62.5 and 125
Term
 Most networks require how many fibers to run a fiber optic network?
Definition
 Two
Term
 Most manufactureres connect two fibers together with a _____.
Definition
 Lamp Cord
Term
 The funny looking μ shape in the mesurements stands for _____.
Definition
 Micro
Term
 What are the two types of light used in fiber optic cables?
Definition
 Regular and Laser
Term
 Most network technologies that use fiber optics use ______ to send light signals.
Definition
 LED's
Term
 A fiber optic cable that uses LED's is known as _____.
Definition
 Multimode Fiber (MMF)
Term
 A fiber optic cable that uses Laser's is known as _____.
Definition
 Single-Mode Fiber (SMF)
Term
 Using SMF optic cables prevents a problem unique to MMF called _____.
Definition
 Modal Distortion
Term
 Fiber optics are measured in _____.
Definition
 Nanometers (NM)
Term
 Almost all multimode cables transmit _____-nm wavelengths.
Definition
 850
Term
 Single mode cables transmit either _____ or _____ -nm, depending on the laser.
Definition
 1310 or 1550
Term
 What are the three main fiber optica cable types?
Definition
 ST, SC, and LC
Term
 This type of cabling predates both neworking and the person computer.
Definition
 Serial
Term
 _____, known as the recommended standard upon, which all serial communication takes place on your PC, dates from 1969 and hasn’t substantially charged in around 40 years.
Definition
 RS-232
Term
 _____ created 9-pin, Male D-Subminiature connector.
Definition
 IBM
Term
 _____ only offered data rates up to 56,000 bps and only point-to-point connections.
Definition
 DB-9
Term
 This type of cabling can run to 2 Mbps, is limited to point-to-point topology, and uses a 25-pin female connector.
Definition
 Parallel
Term
 This type of cabling is IEEE 1394, is restriced to Point-to-Point topology, and has a Data Speed up to 800 Mbps.
Definition
 FireWire
Term
 ______ and up are the operating systems that FireWire cannot be used to network.
Definition
 Vista
Term
 Ratings developed by _____ and _____ to define the risk of network cables burning and creating noxious fumes and smoke.
Definition
 UL and NEC
Term
 What are the three types of Fire Ratings?
Definition
 PVC, Plenum, and Riser
Term
 This type of fire rating does not offer any significant fire protection.
Definition
 PVC
Term
 _____ costs to 5 times as much but not as dangerous as PVC.
Definition
 Plenum
Term
 IEEE _____ sets standards for parallel communication.
Definition
 1284
Term
 IEEE _____ controls the FireWire standard.
Definition
 1394
Term
 IEEE _____ committee sets the standards for networking.
Definition
 802
Term
 The 802 committee split into smaller subcommittees such as _____ and _____.
Definition
 IEEE 802.3 and IEEE 802.5k
Term
 Each sub committee is called a _____.
Definition
 Working Group
Term
 IEEE _____ is for Ethernet
Definition
 802.3
Term
 IEEE _____ is for Wireless.
Definition
 802.11
Term
 What is the frequency and Bandwidth of a CAT 1 cable?
Definition
 < 1; Analog Phones Only
Term
 What is the Frequency and Bandwidth of a CAT 2 cable?
Definition
 4; 4
Term
 What is the Frequency and Bandwidth of a CAT 3 cable?
Definition
 16; 16
Term
 What is the Frequency and Bandwidth of a CAT 4 cable?
Definition
 20; 20
Term
 What is the Frequency and Bandwidth of a CAT 5 cable?
Definition
 100; 100
Term
 What is the Frequency and Bandwidth of a CAT 5e cable?
Definition
 100; 1000
Term
 What is the Frequency and Bandwidth of a CAT 6 cable?
Definition
 250; 10000
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