Correct answer: (D) Exponential backoff reduces collision probability on retransmission.
Explanation
CSMA/CD stations monitor for collisions during transmission, abort collided frames and send a jam signal. Random exponential backoff spreads repeated attempts over a growing contention interval, reducing repeated collisions. Thus D. Jamming indicates collision rather than padding short frames.
More Data Link Layer: Error Detection, Medium Access Control, Flow Control questions
GATE 2016 CS (CS2) Q63– A 20×10⁶ bit/s CSMA/CD network has maximum one-way propagation 40 μs. Find the minimum…
GATE 2016 CS (CS2) Q64– For IEEE 802.11 wireless MAC: I: At least three nonoverlapping channels are available. II:…
GATE 2016 CS (CS2) Q65– A 128×10³ bit/s satellite link has one-way propagation 150 ms. Selective-repeat ARQ sends…
GATE 2017 CS (CS2) Q44– A binary code has exactly four valid words: 00000,01011,10101,11110. Let p be minimum…
GATE 2013 CS (CS1) Q46– An Ethernet LAN sends 10000-bit frames at 500 Mb/s. Signals travel at 200000 km/s. Find…
GATE 2015 CS (CS3) Q35– A CSMA/CD network transmits at 100 Mbps over a 1 km cable without repeaters. Minimum frame…