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Chapter 6

BUS 237 Chapter Notes - Chapter 6: Optical Fiber Cable, Virtual Private Network, Optical Fiber


Department
Business Administration
Course Code
BUS 237
Professor
Bisher
Chapter
6

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Why Should I Care About Networks?
Networks and Collaboration
- Collaboration - occurs when two or more people work together to achieve a
common goal, result, or product
- The effectiveness of a collaborative effort is driven by four critical factors:
- Communication skills and culture
- The key to effective collaborative effort
- Communication systems
- Email, virtual private networks, instant messaging, and more
sophisticated communications systems, dependent on the network
technology available in an organization
- Content management
- Users need to manage content so that conflicts do not occur
- Databases and content management systems help ensure that
conflicts are handled correctly
- Workflow control
- A process or procedure by which content is created, edited, used, and
disposed
- Similar to business process
- Business process focuses on delivering a good or service
externally to a customer
- Workflow focuses on the internal delivery of a good or service
to other employees in the organization
Network Externalities
- Network externality - the larger the number of people using a network, the more
valuable that network becomes
What Is a Computer Network?
- Network - a collection of computers that communicate with one another over
transmission lines
- Transmission media - physical media, such as copper cable and optical fibre (glass
fibre) cable, or wireless media transmitting light or radio frequencies (including
cellular and satellite systems) which transmit electronic signals
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- Local area network (LAN) - a network that connects computers that reside in a
single geographical location on the premises of the company that operates the LAN
- The number of connected computers can range from two to several hundred
- Can place communication lines wherever it wants because all line sreside on
its premises
- Wide area network (WAN) - a network that connects computers located at different
geographical locations
- Must contract with a communications vendor that is licensed by the
government and already has capacity or the authority to install more
connections between two cities
- Internet - either a private network of networks or, more commonly, the public
network known as the internet
- Protocol - a standardized means for coordinating an activity between two or more
entities
What Are the Components of a Lan?
- A LAN is a group of computers connected together on a single site
- Switch - a special-purpose computer that receives and transmits data across a
network
- Network interface card (NIC) - a hardware component on each device on a network
that connects the device’s circuitry to the communications line
- Works together with programs in each device to implement Layers 1 and 2 of
the TCP/IP-OSI hybrid protocol
- MAC (media access control) address/physical address - a permanent address
given to each network interface card at the factory
- Enables the device to access the network via a Level-2 protocol
- Unshielded twisted pair (UTP) cable - a type of cable used to connect the
computers, printers, switches, and other devices on a LAN
- Has four pairs of twisted wire
- A device called an RJ-45 connector is used to connect the UTP cable into
NIC devices
- Optical fibre cable - a type of cable used to connect the computers, printers,
switches and other devices on a LAN
- The signals are light rays, and they are reflected inside the glass core of the
optical fibre cable
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find more resources at oneclass.com
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