Questions and Answers
What does digital communications describe?
A process in which two or more computers or devices transfer data, instructions, and information.
Which of the following is NOT a type of network?
A local area network (LAN) connects computers and devices in a __________ geographical area.
limited
A wireless LAN (WLAN) uses physical wires for connectivity.
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What is the purpose of TCP/IP?
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What is a token ring standard?
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Match the following network types with their descriptions:
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Client/server networks do not have a central control device.
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Communications software is designed to facilitate __________.
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What are some examples of network communications standards?
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Study Notes
Communication and Networks
- Digital communication involves the transfer of data, instructions, and information between two or more devices.
- Components of digital communication include sending devices, transmission media, and receiving devices.
Network Basics
- A network comprises interconnected computers and devices using communication devices and transmission media.
- Benefits of networks include improved communication, data sharing, hardware sharing, software sharing, and fund transfers.
Network Topologies
- Star Topology: All devices link to a central hub.
- Bus Topology: Devices connect to a single central cable.
- Ring Topology: Devices arranged in a circular configuration.
- Mesh Topology: Each device connects directly to every other device.
Network Classifications
- Local Area Network (LAN): Connects devices within a limited geographic area; a Wireless LAN (WLAN) operates without physical wiring.
- Metropolitan Area Network (MAN): Links multiple LANs within a metropolitan area.
- Wide Area Network (WAN): Covers extensive geographic areas, potentially connecting multiple cities or countries.
- Personal Area Network (PAN): Connects devices in an individual workspace, utilizing both wired and wireless technologies.
Network Architecture
- Defines the arrangement of computers, devices, and media in a network.
- Client/Server Network: Centralized architecture where clients request services from a server.
- Peer-to-Peer Network: Each device acts as both a client and server, sharing resources directly.
Communication Standards and Protocols
- Common standards include Ethernet, Token Ring, TCP/IP, and Wi-Fi.
- Ethernet: No central control over data transmission; all nodes share transmission privileges.
- Token Ring: Devices pass a special signal (token) to control communication.
- TCP/IP: Protocol used for routing messages across networks.
Data Communication Protocols
- HTTP (Hypertext Transfer Protocol): Fundamental protocol for sending web pages.
- HTTPS (Hypertext Transfer Protocol Secure): Secured version of HTTP.
- TCP (Transmission Control Protocol): Ensures reliable and error-checked delivery of data.
- IP (Internet Protocol): Provides unique addressing and routing for data packets.
Communication Software and Lines
- Communication software facilitates data transfer between devices.
- Different types of communication lines exist, including fiber optics, coaxial cables, and twisted pair cables.
Wireless Transmission Media
- Wireless communication methods include Bluetooth, infrared (IrDA), radio frequency identification (RFID), near-field communication (NFC), and various cellular technologies like LTE (Long-Term Evolution).
- Each method has unique capabilities for data transfer, reach, and applications.
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Description
This quiz focuses on the key components necessary for successful communication and networking. It covers various sending and receiving devices as well as the differences between client/server and peer-to-peer networks. Test your understanding of these essential concepts in communication technology.
