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A+ Computer Course > Chapter 6 Network Fundaments > Flashcards

Chapter 6 Network Fundaments Flashcards

1
Q

Network

Ch.6- pg.264

A
  • A network links two or more computers together to communicate and share resources
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2
Q

LANs (Local Area Networks)

Ch.6- pg.266

A
  • The linking of computers to share resources in a closed environment
  • Early LANs could only stretch across a single floor of the office and support only 30 people
  • The software on early LANs could only used by one user at a time (file locking)
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3
Q

WANs (Wide Area Networks)

Ch.6- pg.266

A
  • Could cover buildings, states, countries, and continents

- Use publically available communication lines

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4
Q

PANs (Personal Area Networks)

Ch.6- pg.266-268

A
  • A group called Bluetooth Special Interest Group (SIG) created the Bluetooth
  • PAN is a network that has been created for one person only
  • WPAN (Wireless personal area network)
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5
Q

MANs (Metropolitan area network)

Ch.6- pg.268

A
  • A type of network for a large campus or city

- Controlled by a central IT organization

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6
Q

Primary Network Components

Ch.6- pg.268

A
  • Server
  • Client or workstation
  • Resource
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7
Q

Servers

Ch.6- pg.269

A
  • Core component of a network
  • Provides a link to the resources necessary to preform any task
  • Preform several difficult critical roles on a network
    Ex: File servers provide files to the server
  • Centralized control
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8
Q

Dedicated sever

Ch.6- pg.269

A
  • A server that has one specific task

Ex: Web server- only task is to serve up web pages

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9
Q

Non-dedicated server

Ch.6- pg.270

A
  • Provide one or more services and local access
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10
Q

Workstations

Ch.6- pg.270

A
  • Where Network users do their work
  • Also known as client computers
  • Need lots of things to make a workstation a network client. You must install:
    • NIC, a special expansion card, connect it with the cabling system, and a special software called client software
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11
Q

Network Resources

Ch.6- pg.271-272

A
  • Printers and other peripherals
  • Disk storage and file access
  • Applications
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12
Q

Network Operating System (NOSs)

Ch.6- pg.272

A
  • Runs on the server

- Types include UNIX, Linux, Mircosoft’s Windows Server series

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13
Q

Peer-to-Peer Networks

Ch.6- pg.273-274

A
  • Also known as workgroups
  • The computers act as both service provider and service requestors
  • Small, inexpensive, great for small companies, and need little extra hardware
  • No central administration or control, not very secure, and not for large companies
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14
Q

Client -Server Resource Model

Ch.6- pg.274-275

A
  • Better for large companies
  • More secure, centralized control, easier to share resources, and easier to preform backups
  • Need more hardware, requires NOS
  • Only choice for large networks
  • Server-based networks known as domains
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15
Q

Network Topologies

Ch.6- pg.275

A
  • Is a way of laying out a network

- Types include: Bus, star, ring, mesh, and hybrid

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16
Q

Bus Topology

Ch.6- pg.276

A
  • Simplest, single cable runs to every workstation
  • Each computer shares the same data and address path
  • Easy to install
  • Difficult to add another workstation, if one cable breaks, the entire network is disrupted
  • Expensive to maintain
17
Q

Star Topology

Ch.6- pg.276

A
  • Branches each network device off a central device called a hub
  • Easy to add workstations, easy to install
  • If one workstation goes down it does not affect the network
  • If one central device goes down the whole network goes down with it
  • Expensive
  • Most common topology used today
18
Q

Ring Topology

Ch.6- pg.277

A
  • Each computer connects to two other computers, joining them into a circle
  • Each entity participating reads the message then regenerates it and hands it to its neighbor
  • Difficult to add new computers
  • One computer goes down, the whole network goes down
  • Token Ring
19
Q

Mesh Topology

Ch.6- pg.278

A
  • Each device is connected to every other device
  • to find out how many cables you do (x*(x-1))/2= how many cables (x # of computers)
  • Difficult to add another workstation
  • Complicated and expensive to install and maintain
20
Q

Hybrid Topology

Ch.6- pg.279

A
  • A mix of all the other topologies

- Most expensive

21
Q

OSI Model

Ch.6- pg.280-281

A
  • Open Systems Interconnection
  • 7 Layers called:
      1. Application Layer
      1. Presentation layer
      1. Session Layer
      1. Transport Layer
      1. Network Layer
      1. Data Link Layer
      1. Physical Layer
22
Q

IEEE 802

Ch.6- pg.281-283

A
  • Rules that govern who talks when and how
  • Ethernet (802.3 CSMA/CD
  • CSMA/CD- Carrier Sense Multiple access/Collision Detection
23
Q

Common Network Hardware

Ch.6- pg.283-297

A
  • NIC Cards
  • Cable
  • Connectors
  • Cabling Tools
24
Q

Cable

Ch.6- pg.286-294

A
  • Coaxial- contains a center conductor core, surrounded by a plastic jacket
  • Twisted Pair- several wires twisted together in an insulated jacket
  • Fiber Optic- Thin Flexible glass or plastic fiber surrounded by a rubber outer coating
25
Q

Connectors

Ch.6- pg.286-297

A
  • Coax Connectors- Thicknet and Vampire Taps, Thinnet and BNC
  • Twisted Pair Connectors- RJ-11 and RJ-45
  • Fiber Optic- ST (Straight Tip), SC (Subscriber Connector), LC (Local Connector)
26
Q

Cabling Tools

Ch.6- pg.294-297

A
  • Crimper- Strips, snips, and crimps the cable to the connector
  • Multimeter- Measures voltage, current, and resistance on a wire
  • Toner Probe- Tracks wires
  • Cable Tester- Test cable
  • Loopback Plug- Tests network adapter
  • Punch-down Tool- Connects wires
27
Q

Network Components

Ch.6- pg.297-300

A
  • Connectivity Tools

- Auxiliary Tools

28
Q

Connectivity Tools

Ch.6- pg.298-300

A
  • Modems
  • Access Points
  • Hubs
  • Bridges
  • Switches
  • Routers
29
Q

Auxiliary Tools

Ch.6- pg.300-301

A
  • NAS (Network-Attached Storage)
  • Firewall
  • VoIP Phones ( Voice over Internet Protocol
  • Internet Appliance

A+ Computer Course (15 decks)

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