Chapter 6 Network Fundaments

Question 1

Network

Ch.6- pg.264

Answer 1

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

Question 2

LANs (Local Area Networks)

Ch.6- pg.266

Answer 2

• 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)

Question 3

WANs (Wide Area Networks)

Ch.6- pg.266

Answer 3

• Could cover buildings, states, countries, and continents

- Use publically available communication lines

Question 4

PANs (Personal Area Networks)

Ch.6- pg.266-268

Answer 4

• 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)

Question 5

MANs (Metropolitan area network)

Ch.6- pg.268

Answer 5

• A type of network for a large campus or city

- Controlled by a central IT organization

Question 6

Primary Network Components

Ch.6- pg.268

Answer 6

• Server
• Client or workstation
• Resource

Question 7

Servers

Ch.6- pg.269

Answer 7

• 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

Question 8

Dedicated sever

Ch.6- pg.269

Answer 8

• A server that has one specific task

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

Question 9

Non-dedicated server

Ch.6- pg.270

Answer 9

• Provide one or more services and local access

Question 10

Workstations

Ch.6- pg.270

Answer 10

• 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

Question 11

Network Resources

Ch.6- pg.271-272

Answer 11

• Printers and other peripherals
• Disk storage and file access
• Applications

Question 12

Network Operating System (NOSs)

Ch.6- pg.272

Answer 12

• Runs on the server

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

Question 13

Peer-to-Peer Networks

Ch.6- pg.273-274

Answer 13

• 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

Question 14

Client -Server Resource Model

Ch.6- pg.274-275

Answer 14

• 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

Question 15

Network Topologies

Ch.6- pg.275

Answer 15

• Is a way of laying out a network

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

Question 16

Bus Topology

Ch.6- pg.276

Answer 16

• 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

Question 17

Star Topology

Ch.6- pg.276

Answer 17

• 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

Question 18

Ring Topology

Ch.6- pg.277

Answer 18

• 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

Question 19

Mesh Topology

Ch.6- pg.278

Answer 19

• 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

Question 20

Hybrid Topology

Ch.6- pg.279

Answer 20

• A mix of all the other topologies

- Most expensive

Question 21

OSI Model

Ch.6- pg.280-281

Answer 21

• Open Systems Interconnection
• 7 Layers called:
  
  • 7. Application Layer
  • 6. Presentation layer
  • 5. Session Layer
  • 4. Transport Layer
  • 3. Network Layer
  • 2. Data Link Layer
  • 1. Physical Layer

Question 22

IEEE 802

Ch.6- pg.281-283

Answer 22

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

Question 23

Common Network Hardware

Ch.6- pg.283-297

Answer 23

• NIC Cards
• Cable
• Connectors
• Cabling Tools

Question 24

Cable

Ch.6- pg.286-294

Answer 24

• 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

Question 25

Connectors Ch.6- pg.286-297

Answer 25

- 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)

Question 26

Cabling Tools Ch.6- pg.294-297

Answer 26

- 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

Question 27

Network Components Ch.6- pg.297-300

Answer 27

- Connectivity Tools | - Auxiliary Tools

Question 28

Connectivity Tools Ch.6- pg.298-300

Answer 28

- Modems - Access Points - Hubs - Bridges - Switches - Routers

Question 29

Auxiliary Tools Ch.6- pg.300-301

Answer 29

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