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A help desk technician is tasked with moving a user's computer to a makeshift office for renovations. Upon moving the computer, the technician notices the network card will not utilize anything beyond 10Mbps half- duplex. Which of the following is the most likely issue?
Correct Answer: D
Hubs operate in half-duplex mode and are limited to low speeds like 10Mbps, making them the most likely cause for the network card's performance issue. Why Not A (DSL): DSL relates to internet connectivity, not local network hardware. Why Not B (Unmanaged switch): Unmanaged switches typically support full-duplex and higher speeds than 10Mbps. Why Not C (NIC teaming): NIC teaming increases bandwidth and redundancy, and is not relevant to this issue. CompTIA A+ Exam Reference: Core 1 (220-1101), Section 2.2, networking hardware.