_______ allows only internal employee access.

List four external factors that affect data networks

List three internal factors that affect data networks

Size of the message

Complexity of the message

Importance of the message

_____ or _______ (Protocols) ______ how the 

________ are ___, ______, ______, and __________.

Rules or agreements (Protocols) govern how the messages are sent, directed, recieved, and interpreted.

Name the four fundamental internet expectations.

Fault tolerance

Scalability

Quality of Service

Security

____________ means a unit or system will continue to function normally even when some of the components of the network fail.

Fault tolerance means a unit or system will continue to function normally even when some of the components of the network fail.

_________  the duplication of equipment and media. Is a key factor in fault tolerance.

Redundancy the duplication of equipment and media. Is a key factor in fault tolerance.

________ describes the network's ability to grow and react to future changes. Without having to start over on the design.

_____ are web-based collaboration tool.

Wiki's are web-based collaboration tool.

_____ are web pages where people can publish their personal opinions and thoughts about any conceivable topic.

Blog's are web pages where people can publish their personal opinions and thoughts about any conceivable topic.

devices from outside contact.

Securing the network content means

   protecting the data stored on devices and protection of packets.

Name the three elements of communication

 Message  Source

Message Reciever

Channel

__________ occurs when the segments of two or more messages can shuffle into each other and share the medium.

Multiplexing occurs when the segments of two or more messages can shuffle into each other and share the medium.

Segmentation has two primary benefits. What are they?

Multiplexing

Increased efficiency of network communications

How is Segmentation more efficent?

Because the message can be broken into pieces the pieces can be sent along differnt routes.

The downside to using segmentation and multiplexing to transmit messages is the level of __________ added to the process.

complexity

An ___ _____ refers to a piece of equipment that is either the source or the destination of a message on a network.

An end device refers to a piece of equipment that is either the source or the destination of a message on a network.

Another generic term for an end device that sends   and recieves messages is a _____.

Another generic term for an end device that sends and recieves messages is a host.

end

___________ devices connect the individual hosts to the network and can connect multiple individual networks to form an _____________.

Intermediary devices connect the individual hosts to the network and can connect multiple individual networks to form an internetwork.

Intermediary devices are not all the same. Some work inside the LAN performing ______ functions, and others help _____ messages between networks

Intermediary devices are not all the same. Some work inside the LAN performing switching functions, and others help route messages between networks

Intermediary Devices

_____ ______ ______  connect end users to their network. Examples are ____, swiches, and _______ access points.

Network access devices connect end users to their network. Examples are hubs, swiches, and wireless access points.

Intermediary Devices

  _______________  connect one network to one or more other networks. Routers are the main example.

Internetwork devices connect one network to one or more other networks. Routers are the main example.

Intermediary Devices

Route services such as IPTV and wireless broadband.

Communication servers

Intermediary Devices

Connect users to servers and networks through telephone or cable.

Modems

Intermediary Devices

Secure the network with devices such as firewalls tha analyze traffic exiting and entering networks.

 Security devices

Processes running on the intermediary network devices, perform these functions.

The three main types of media in use in a network are?

_______ messages refers to the way data is converted to patterns of electrical, light, or electromagnetic energy and carried on the medium.

Encoding messages refers to the way data is converted to patterns of electrical, light, or electromagnetic energy and carried on the medium.

Networking Media

Copper eg. Twisted-pair cable usually used as __ media

LAN

Network Media

 Fiber-optic - glass or plastic fibers in a vinyl coating usually used for long runs in a and as a ___.

Fiber-optic - glass or plastic fibers in a vinyl coating usually used for long runs in a LAN and as a trunk.

Wireless media uses ____ ____ to connect local users throught the air.

electromagnetic, waves

The differences in the media make each one ideal for different roles in networking situations. When choosing network media, administrators must consider the following:

A ___  is a group of end devices and users under the control of a common administration.

A LAN is a group of end devices and users under the control of a common administration.

A wide-area network is a network that is used to connect ____ that are located geographically far apart.

A wide-area network is a network that is used to connect LAN's that are located geographically far apart.

TSP

telecommunications service provider

An __________ is a collection of two or more LAN's connected by WAN's

An internetwork is a collection of two or more LAN's connected by WAN's

Internetworks are referred to interchangeably as ____

networks or simply ______.

data      networks

The most popular internetwork is the _______, which is open to public use.

Internet

A _________ is a private web of networks closed to the public but open for employees to browse.

A intranet is a private web of networks closed to the public but open for employees to browse.

The media connecting the PC to the networking device plugs directly into the ____.

The media connecting the PC to the networking device plugs directly into the NIC.

Each NIC has a unique _____ _________ that identifies it on the LAN.

Each NIC has a unique physical address that identifies it on the LAN.

The term _______ refers to how the device can allow two different networks to communicate.

The term interface refers to how the device can allow two different networks to communicate.

_______ connect to different networks, and the specialized NICs on ______ are simply called __________.

Routers connect to different networks, and the specialized NICs on routers are simply called interfaces.

 The interface on a router device has a a unique physical address and appears as a ____ on the local network.

The interface on a router device has a a unique physical address and appears as a host on the local network.

____ is a common protocol that governs the way that a web sever and a web client interact.

HTTP is a common protocol that governs the way that a web sever and a web client interact.

HTTP defines the ________ and __________ of the requests and responses exchanged between the client and server.

HTTP defines the content and formating of the requests and responses exchanged between the client and server.

 ___ is the protocol that manages the individual conversations between web servers and web clients.

TCP is the protocol that manages the individual conversations between web servers and web clients.

TCP divides the HTTP messages into smaller pieces, called ________, to be sent to the destination client.

TCP divides the HTTP messages into smaller pieces, called segments, to be sent to the destination client.

T

TCP is also responsible for controlling the ______ and ______ at which messages are exchanged between the server and client

 TCP is also responsible for controlling the size and rate at which messages are exchanged between the server and client

The most common internetwork protocol is ____ _____.

The most common internetwork protocol is internet protocol.

Network access protocols describe two primary functions: _______ ___________ and the _______ __________ of data on the media.

Network access protocols describe two primary functions: Data-link management and the Physical transmission of data on the media.

Data-link management protocols take the packets from IP and format them to be __________ ____ the ____.

Data-link management protocols take the packets from IP and format them to be transmitted over the media.

Name the two networking models

protocol models,   reference models

The process of adding control information as it passes through the layered model is called ____________

The process of adding control information as it passes through the layered model is called encapsulation

__________ is the process of removing the extra information and sending only the original application data up to the destination application layer.

Decapsulation is the process of removing the extra information and sending only the original application data up to the destination application layer.

The generic term for data at each level in the protocol stack is called _______________.

The generic term for data at each level in the protocol stack is called protocol data unit.