RJ-45 is the standard connector used for Ethernet networks. Here's why it's the correct answer: Compatibility: Ethernet ports on both laptops and Cisco switches use RJ-45 connectors. This makes RJ-45 cables ideal for direct connections between these devices. Appearance: RJ-45 ports are rectangular and slightly larger than typical phone jacks (RJ-11). They have eight metal pins inside. Why other options are incorrect: DVI: DVI ports are used for video connections between computers and displays. RJ-11: RJ-11 ports are primarily associated with analog phone lines and are smaller than RJ-45. DB-9: DB-9 connectors were traditionally used for serial connections on older computers and peripherals.
