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Level 92

Network Fundamentals


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Data Network
A digital network used to send data between computers.
Internet
A global network connecting millions of computers, making it possible to exchange information.
Download
The process of transferring a copy of a file from a remote computer to a local computer's storage device.
Instant Messaging
Real-time communications between two or more people through text. The text is conveyed through computers connected over a network.
Real-Time
Events or signals that show output as fast as possible, or as they happen.
Blogs
A website where entries are made in journal style. A user creates a blog, makes changes to it through templates or altering HTML code. Visitors can leave posts of the blog.
Podcasts
Digital files that are distributed over the Internet using syndication feeds, for playback on portable media players and personal computers.
Wikis
A website where users are able to freely add new content and edit existing content.
Collaboration
Two or more people working together on a project.
Packet Tracer
A drag-and-drop network simulator developed by Cisco to design, configure and troubleshoot network equipment within a simulated environment.
intranet
a company's private data network that uses internet standards and technology
Source
The origin of the PDU. This can be a process, a host, or a node. This depends on the layer to which you are referring to.
router
A __________ forwards packets across computer networks.
Cloud
A symbol used to represent of part of the network whose details are being ignored.
Internet Protocol (IP)
Address A number that uniquely identifies each computer or device connected to the Internet.
Convergence
Term used to refer to the trend of manufacturers offering computers and devices with technologies that overlap.
Fault Tolerance
The design on networks that can continue to operate without interruption in the case of hardware, software or communications failures.
Scalability
The ability or a protocol, system or component to be modified to fit a new need.
Internetwork
A combination of many IP subnets and networks, as created by building a network using routers. It can include several IP networks.
PACKET
Data files are split up into these so that different parts of the same file can take different paths to get to the intended address
Quality of Service (QoS)
A control mechanism that can provide different priorities to different users or data flows, or guarantee a certain level of performance to a data flow in accordance with requests from the application program.
Bandwidth
A measure for the speed (amount of data) you can send through an Internet connection. The more __________, the faster the connection
Priority Queuing
A routing feature in which frames in an interface output queue are prioritized based on various characteristics such as packet size and interface type.
Authentication
__________ ensures that the individual is who they claim to be (the authentic or genuine person) and not an imposter.
Firewall
(computing) a security system consisting of a combination of hardware and software that limits the exposure of a computer or computer network to attack from crackers
Single Point of Failure
A system or network design characterized by one or more major components that are required to maintain operation.
Extranet
A network configuration that allows selected outside organizations to access internal information systems
Wireless Technology
Technology that allows communication without needing physical connectivity. Examples include cell phones, personal digital assistants (PDA) wireless access points and wireless NICs.
Standards
An internationally recognized definition of technical specifications that ensure worldwide consistency.
Bits
Binary Digit used in the binary number system. Each bit can either be a 1 or 0. Bits are units for information storage in computing.
Binary
A numbering system characterized by 1s and 0s.
Collaboration Tool
Something that helps people collaborate in a software context.
Redundancy
A network architecture designed to eliminate network downtime caused by a single point of failure.