Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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- The data link layer is responsible for delivering data units from one station to the next without errors. Why?
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- How does WDM function, in a nutshell?arrow_forwardA 8 bit data block with 1 start bit, 2 stop bit, and 1 parity bit using an asynchronous mode of transmission can be transmitted 960 times, What is the data rate of that communication link?arrow_forwardWhat is the difference between a circuit-switched network and a packet-switched network?What does TDM do better than FDM in a circuit-switched network?arrow_forward
- TDM, FDM, and CDM are all physical-layer multiplexing schemes.What are the benefits and drawbacks of each strategy?arrow_forwardDiscuss the functions of a switch in the OSI model and how it operates at the data link layer.arrow_forwardWhat does the acronym VLAN stand for, and why are VLANs used in network architecture?arrow_forward
- Explain the key distinctions between a circuit-switched network and a packet-switched one.Assuming both TDM and FDM are used in a circuit-switched network, which one provides more advantages?arrow_forwardHow does multilevel coding increase a channel’s effective data transfer rate?arrow_forwardHow is data transfer achieved using CATV channels?arrow_forward
- This kind of data transmission allows data to be delivered in both directions on a signal carrier at the same time. What exactly does "full-duplex" imply?arrow_forwardThe physical layer multiplexes using TDM, FDM, and CDM.Explain the advantages and disadvantages of each approach.arrow_forwardExplain in terms of data link control and physical layer concepts how error and flow control are accomplished in synchronous time division multiplexing.arrow_forward
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