100-150 Question 97
Select 2A network technician is tasked with setting up a local area network (LAN) for a small office. The setup requires connecting computers to a network switch and ensuring reliable connectivity. Which of the following cables and connectors are most suitable for this task?
- A
Cat5e Ethernet cable with RJ45 connectors
- B
Fiber optic cable with LC connectors
- C
Coaxial cable with BNC connectors
- D
Cat6 Ethernet cable with RJ45 connectors
- E
Serial cable with DB9 connectors
Show answer and explanation
Correct answers: A, D
Explanation
In most LAN setups, twisted-pair Ethernet cables like Cat5e and Cat6 are used with RJ45 connectors to connect devices such as computers, switches, and routers. These cables are cost-effective, support high-speed data transmission, and are widely compatible with modern networking equipment. While other cable types like fiber optic or coaxial have their use cases, they are not typically used for standard small office LAN connections.
- A. Correct.
Cat5e Ethernet cables with RJ45 connectors are commonly used in LANs for connecting devices like computers and switches. They support reliable data transmission for most office setups.
- B. Incorrect.
Fiber optic cables with LC connectors are typically used for long-distance connections or high-speed backbones, not for standard LAN connections in a small office.
- C. Incorrect.
Coaxial cables with BNC connectors are used for older technologies like analog video or cable internet, not for Ethernet-based LANs.
- D. Correct.
Cat6 Ethernet cables with RJ45 connectors are an improved version of Cat5e, providing higher performance and better crosstalk reduction, making them suitable for LANs.
- E. Incorrect.
Serial cables with DB9 connectors are used for legacy serial communication, not for modern Ethernet-based LAN networking.