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CCC100 FINALS
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What is computer communications?
Computer communications describes a process in which two or more computers or devices transfer data, instructions, and information. It is the process of sharing data, programs, and information between two or more computers.
What are the elements of a communication system?
The elements of a communication system include sending and receiving devices, connection devices (interface between sending and receiving devices), and the communication channel (the actual connecting or transmission medium for messages).
What are wireless connections in computer communications?
Wireless connections do not use a solid substance to connect devices. They most often use radio waves for communication. Examples of wireless connections include WiMAX, Bluetooth, Wi-Fi, microwave, cellular, satellite, GPS, and infrared communication.
What is WiMAX?
WiMAX stands for Worldwide Interoperability for Microwave Access. It extends the range of Wi-Fi networks using microwave connections, allowing for broader wireless coverage.
What is Bluetooth?
Bluetooth is a wireless technology that transmits data over short distances. It is widely used for a variety of wireless devices, such as smartphones, headphones, and keyboards.
What is Wi-Fi?
Wi-Fi stands for wireless fidelity. It uses high-frequency radio signals to enable wireless networking. Most home and business wireless networks use Wi-Fi for internet connectivity.
What is microwave communication?
Microwave communication is a line-of-sight communication method used to send data between buildings. Longer distances require the use of microwave stations to relay the signals.
What is cellular communication?
Cellular communication uses cell towers to send and receive data within relatively small geographic regions or cells. It is the basis for mobile phone networks.
What is satellite communication?
Satellite communication uses microwave relay stations to transmit data over long distances. It leverages satellite technology to enable global connectivity.
What is GPS?
GPS stands for Global Positioning System. It is a navigation system that tracks geographic locations using signals from satellites. It is commonly used for location-based services and mapping.
What is infrared communication?
Infrared communication uses light waves to transmit data over short distances. It requires a direct line of sight between the communicating devices.
What are physical connections in computer communications?
Physical connections use a solid medium to connect sending and receiving devices. Examples include twisted pair cable, telephone lines, Ethernet cables, coaxial cable, and fiber optic cable.
What is the use of wireless instant messaging (IM) in computer communications?
Wireless instant messaging (IM) is a real-time internet communications service that allows wireless mobile devices to exchange messages. It enables users to connect with others wirelessly through various devices.
How do people connect to the Internet wirelessly at home, work, and in public locations?
People connect wirelessly to the Internet through a wireless internet access point using devices such as notebook computers, smartphones, handheld game consoles, or other wireless-enabled devices.
What is a Global Positioning System (GPS) and how is it used?
A Global Positioning System (GPS) is a navigation system that consists of earth-based receivers analyzing signals sent by satellites to determine geographic locations. It is commonly used for navigation and location tracking.
WIRELESS INTERNET ACCESS POINT
A device that allows notebook computers, smartphones, handheld game consoles, or other devices to connect to the internet wirelessly.
GLOBAL POSITIONING SYSTEM (GPS)
A navigation system that consists of one or more earth-based receivers that accept and analyze signals sent by satellites to determine the receiver's geographic location.
GROUPWARE
Software that helps groups of people work together on projects and share information over a network.
VOICE MAIL
Functions much like an answering machine and allows someone to leave a voice message for one or more people.
COLLABORATIVE SOFTWARE
Includes tools that enable users to share documents via online meetings and communicate with other connected users. Examples include Acrobat Connect, GoToMeeting, Microsoft Groove, Microsoft Office Live Meeting, Google Wave, and WebEx.
COLLABORATE VIA E-MAIL
Users collaborate via email by sending documents for review. Reviewers can add comments or changes to the document, and the originator can merge all comments and changes into a single document.
DOCUMENT MANAGEMENT SYSTEM
Provides storage and management for a company's documents such as word processing documents, presentations, and spreadsheets. Examples include Google Docs, a web-based document management system.
CONNECTION DEVICES
Many communication systems use standard telephone lines and analog signals, while computers use digital signals. Modems modulate and demodulate signals, and transfer rates are measured in megabits per second. Types include wireless, wireless wide area network (WWAN), DSL, and cable.
CONNECTION SERVICES
Support very high-speed, all-digital transmission for large corporations. Examples include T1, T3, DS3, and OC (optical carrier) lines. Cellular service providers support voice and data transmission using cellular networks, and other technologies include dial-up, DSL, cable, fiber optic service (FiOS), and satellite.
DATA TRANSMISSION
The process of sending digital or analog data over a communication medium such as a phone line or computer network.
2G technology
Analog radio signals
3G technology
Digital radio signals
4G technology
LTE Long Term Evolution
5G technology
The newest and fastest network
Dial-up
An affordable technology for internet access
