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ISTM 610 - Exam 1 Terms with Correct Definitions
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ISTM 610 - Exam 1 Terms with Correct Definitions Data Communications - Ans:-The movement of computer information from one point to another by means of electrical or optical transmission systems. Telecommunications - Ans:-A broader term than data communications and includes the transmission of v...

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  • October 22, 2024
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  • 2024/2025
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©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




ISTM 610 - Exam 1 Terms with Correct Definitions


Data Communications - Ans:✔✔-The movement of computer information from one point to another by

means of electrical or optical transmission systems.


Telecommunications - Ans:✔✔-A broader term than data communications and includes the transmission

of voice and video (images and graphics) as well as data and usually implies longer distances.


Client - Ans:✔✔-A user device to access a network and receive data from a server. (e.g., web server, mail

server, laptops, tablets, cell phones, etc.)


Server - Ans:✔✔-A device that stores and transmits data to a client. (e.g., web server, mail server, file

server)


Circuit - Ans:✔✔-A pathway or connection between client and server. (e.g., copper wire, fiber optic

cable, wireless)


Local Area Network (LAN) - Ans:✔✔-Covers a small, clearly defined area. Might contain a single floor or

work area or single building. When this uses a wireless circuit, it is called a Wireless [term] (W___)


Backbone Network (BN) - Ans:✔✔-A high-speed network connecting other networks together. May span

hundreds of feet to several miles.



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Wide Area Network (WAN) - Ans:✔✔-Has the largest geographic scope of networks. Often composed of

leased circuits. May span hundreds or thousands of miles.


Intranet - Ans:✔✔-A network (often a LAN) that uses the Internet technologies to share information

within an organization.


Open only to those inside the organization.


(e.g., employees accessing budgets, calendars, and payroll information available through the

organization's [term])


Extranet - Ans:✔✔-A network that uses the Internet technologies to share information between

organizations.


Open only to those invited users outside the organization.


Accessible through the Internet.


(e.g., suppliers and customers accessing the inventory information of a company over an [term])


Network Models - Ans:✔✔-Divide communication functions into layers.


Two types: Open System Interconnection Reference Model (OSI model) and Internet Model (or TCP/IP

model)


Protocol - Ans:✔✔-Defines the language of transmission.


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It specifies the rules, functionality, and messages for communication at the layer.


Protocol Data Unit (PDU) - Ans:✔✔-Contains layer-specific information necessary for a message to be

transmitted through a network.


Each layer adds a [term]


[term]s act like nested envelopes


Encapsulation - Ans:✔✔-Occurs when a higher level Protocol Data Unit is placed inside of a lower level

Protocol Data Unit.


Application - Ans:✔✔-Network Layer


-Purpose: user's access to network, software to perform work.


-Example of Protocols/Standards: HTTP, SMTP, DNS, FTP, DHCP, IMAP, POP, SSL


-Protocol Data Unit (PDU): Packet (or Data)


Transport - Ans:✔✔-Network Layer


-Purpose: end-to-end management: 1) link application layer to network 2)segmenting and tracking

3)flow control


-Example of Protocols/Standards: TCP, UDP



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