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Test Out Network + > Networking Facts > Flashcards

Networking Facts Flashcards

1
Q

What is a network?

A
  • A group of computers that can share information through their interconnections
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2
Q

Network is made up of the following components:

A
  • Computers (aka nodes or hosts)
  • Transmission media
  • Network interfaces
  • Protocols
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3
Q

Transmission Media

A
  • A path for electrical signals between devices
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4
Q

Network Interfaces

A
  • Devices that send and receive electrical signals
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5
Q

Protocols

A
  • Rules or standards that describe how hosts communicate and exchange data
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6
Q

Networks save organizations money by allowing them to:

A
  • Consolidate (centralize) data storage
  • Share peripheral devices like printers
  • Increase internal and external communications
  • Increase productivity and collaboration
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7
Q

Peer-to-Peer

Host Role

A
  • Each host can provide network resources to other hosts or access resources located on other hosts
  • Each host is in charge of controlling access to those resources
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8
Q

Advantages if Peer-to-Peer

A
  • Easy implementation

* Inexpensive

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9
Q

Disadvantages of Peer-to-Peer

A
  • Difficult to expand (not scalable)
  • Difficult to support
  • Lack centralized control
  • No centralized storage
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10
Q

Client-Server

Host Role

A
  • Host have specific roles
  • EX some hosts are assigned server roles which allow them to provide network resources to other host.
  • Other hosts are assigned client roles, which allow them to consume network resources.
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11
Q

Client-Server advangtages

A
  • Easy to expand (Scalable)
  • Easy to support
  • Centralized services
  • Easy to back up
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12
Q

Client -Server disadvangtages

A
  • Expensive server operating systems

* Extensive advanced planning required

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13
Q

Personal Area Network (PAN)

Geography

A
  • A very small network used for communicating between personal devices
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14
Q

PAN examples

A
  • Notebook computer
  • Wireless headset
  • Wireless printer
  • Smart Phone
  • *** Range is limited to only a few feet **
    • Created for Bluetooth
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15
Q

Local Area Network (LAN)

Geography

A
  • Small geographic area like an office

* Typically uses wires to connect systems together

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16
Q

Wireless Local Area Network (WLAN)

Geography

A
  • An Area that is roughly the same size as a standard LAN

* However it uses radio signals instead of wires to connect systems together

17
Q

Metropolitan Area Network (MAN)

Geography

A
  • A network that covers an area as small as a few city blocks to as large as an entire metropolitan city
  • MANs are typically owned and managed by a city as a public utility
  • *** Many IT professionals do not differentiate between a WAN and a MAN as they use essentially the same network technologies
18
Q

Wide Area Network (WAN)

Geography

A
  • A group of LANs that are geographically isolated but are connected to form a large internetwork
19
Q

Network

Management

A
  • Describes a computer system controlled by a single organization.
  • Could be a LAN at a single business or organization. If two companies connected their internal networks to share data you could call it one network
    ( In reality however it is two networks because each network is managed by a different company
20
Q

Subnet

Management

A
  • Portion of a network with a common network address
  • All devices on the subnet share the same network address, but have unique host addresses
  • Each subnet in a larger network has a unique subnet address
  • Devices connected through hubs or switches are on the same subnet. Routers are used to connect multiple subnets
21
Q

Internetwork

Management

A
  • A network with geographically disperse (WAN) connections that connect multiple LANs is often called an internetwork
  • Additionally connecting two networks under different management is a form of internetworking because dat must travel between two networks
22
Q

Internet

Participation

A
  • A large world wide public network. The network is public because virtually anyone can connect to it, and users or organizations make services freely available on the internet
  • Users and organizations connect to the internet through an internet service provider (ISP)
  • The internet uses a set of communication protocols (TCP/IP) for providing services
  • Individuals and organizations can make services (such as a website) available to other users on the internet
23
Q

Intranet

A
  • A private network that uses internet technologies
  • Services on an intranet are only available to hosts that are connected to the private network
  • For ex your company might have a website that only employees can access
24
Q

Extranet

A
  • A private network that uses internet technologies but its resources are made available to external (but trusted) users
  • For example you might create a website on a private network that only users from a partner company can access

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