200-301 Question 67
Single answerA network engineer is tasked with connecting a new Cisco router to a Gigabit Ethernet switch located in the same rack. The engineer needs to ensure the connection supports full duplex and operates at the highest speed possible. Which type of cable should the engineer use?
- A
Straight-through Cat6 Ethernet cable
- B
Crossover Cat5 Ethernet cable
- C
Serial cable
- D
Fiber optic cable with LC connectors
Show answer and explanation
Correct answer: A
Explanation
To connect a router to a switch within the same rack and achieve Gigabit Ethernet speeds with full duplex, a Cat6 straight-through Ethernet cable is the most appropriate choice. It is designed for connecting devices of different types and supports the required speed and duplex settings. Crossover cables, serial cables, or fiber optic cables are either unsuitable or unnecessary for this specific scenario.
- A. Correct.
Straight-through Cat6 Ethernet cables are commonly used to connect devices of different types, such as a router to a switch. Cat6 cables support Gigabit Ethernet speeds and full duplex communication, making this the correct choice for the scenario.
- B. Incorrect.
Crossover cables are used for connecting similar devices, such as switch-to-switch or router-to-router connections. This is not suitable for connecting a router to a switch in this context.
- C. Incorrect.
Serial cables are used for WAN connections or console access. They do not support Gigabit Ethernet speeds and are not appropriate for connecting a router to a switch in the same rack.
- D. Incorrect.
Fiber optic cables can support high speeds, but they typically require fiber-optic transceivers and are not necessary for short distances within the same rack. Additionally, the scenario does not specify the use of fiber optics.