Your R&D team is comparing baseband and broadband networking. Which statement correctly contrasts baseband and broadband on a single cable?
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ABroadband networks carry several channels on a single cable, whereas in a baseband network several cables carry one channel
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BBaseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
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CBaseband refers to local area networks, and broadband refers to wide area networks
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DBaseband operates at a standard bit rate, whereas broadband may operate at different rates as needed
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EBroadband and baseband refer only to infrared frequencies under special conditions
Answer
Correct Answer: Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable
Explanation
Introduction / Context: Baseband and broadband describe how signals share a medium. Understanding the difference guides technology selection for LANs, MANs, and access networks.
Given Data / Assumptions:
- We compare how many channels share one physical cable.
- We assume traditional definitions used in networking texts.
- Physical details like modulation are abstracted.
Concept / Approach: Baseband transmits a single digital signal over the entire bandwidth of the medium (one channel per cable). Broadband uses frequency-division techniques to carry multiple independent channels simultaneously on the same cable.
Step-by-Step Solution: 1) Baseband: entire medium bandwidth devoted to one channel; signaling is typically digital.2) Broadband: divide medium bandwidth into sub-bands; modulate carriers so several channels coexist.3) Therefore, the correct contrast is: baseband = single channel per cable; broadband = several channels per cable.
Verification / Alternative check: Historical examples: Ethernet on coax (baseband) vs CATV coax (broadband) carrying TV channels and data simultaneously.
Why Other Options Are Wrong: Several cables carry one channel: Impractical and not the definition of baseband.
LAN vs WAN distinction: Scope (LAN/WAN) is not inherent to baseband/broadband. Fixed vs variable bit rates: Not the defining property. Infrared-only: Incorrect; terms apply across many media and frequencies.Common Pitfalls: Assuming “broadband” simply means “fast.” It specifically implies multiple channels via frequency division.
Final Answer: Baseband networks carry a single channel on a single cable, whereas broadband networks carry several channels on a single cable