Computer Networking Who invented the modem? Digital Equipment Corpn. Wang Laboratories Ltd. Apple Computers Inc. None of these AT & T Information Systems, USA Digital Equipment Corpn. Wang Laboratories Ltd. Apple Computers Inc. None of these AT & T Information Systems, USA ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Which of the following signals is not standard RS - 232-C signal? DSR RTS CTS VDR None of these DSR RTS CTS VDR None of these ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Why does the data communication industry use the layered OSI reference model?1. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.2. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.3. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers.4. It encourages industry standardization by defining what functions occur at each layer of the model. 3 only 1 only 2 and 3 1 and 4 3 only 1 only 2 and 3 1 and 4 ANSWER DOWNLOAD EXAMIANS APP
Computer Networking Carrier is One or more conductors that serve as a common connection for a related group of devices None of these a collection of interconnected functional units that provides a data communications service among stations attached to the network the condition when two or more sections attempt to use the same channel at the same time a continuous frequency capable of being modulated or impressed with a second signal One or more conductors that serve as a common connection for a related group of devices None of these a collection of interconnected functional units that provides a data communications service among stations attached to the network the condition when two or more sections attempt to use the same channel at the same time a continuous frequency capable of being modulated or impressed with a second signal ANSWER DOWNLOAD EXAMIANS APP
Computer Networking A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose? Telecommunications Link access procedure (LAP) Error detecting protocols None of these Communications software Telecommunications Link access procedure (LAP) Error detecting protocols None of these Communications software ANSWER DOWNLOAD EXAMIANS APP
Computer Networking What is the minimum number of wires required for sending data over a serial communications links? 4 1 2 3 None of these 4 1 2 3 None of these ANSWER DOWNLOAD EXAMIANS APP
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