Cisco CCNP-Old Certification Exam 642-801

What is the minimum cable rating required for a 1000BASE-TX network?

A. Cat3.
B. Cat5.
C. Cat5e.
D. Cat6.
Answer: C
Explanation:
A 1000BASE-TX network operates at up to 10000 Mbps. The minimum cable rating that
can support this speed is Cat5e 642-811 cable, which is rated at up to 1000 Mbps while Cat5 cable
is rated at up to 100 Mbps only.

Incorrect Answers:
A: A 1000BASE-TX network operates at 350-021 up to 10000 Mbps while Cat3 cable is rated at
up to 16 Mbps only.
B: A 1000BASE-TX network operates at up to 10000 Mbps while Cat5 cable is rated at
up to 100 Mbps only.
D: A 1000BASE-TX network operates at up to 1000 Mbps. Cat5e cable is rated at up to
1000 Mbps, while Cat6 cable is 642-801 rated at over 1000 Mbps. Thus Cat5e is the minimum
cable rating required to fully support a 1000BASE-TX network.

References:
David Groth and Dan Newland, A+ Complete Study Guide (2nd Edition), Sybex,
Alameda CA, 2002, pp. 325,327.
David Groth and Toby Skandier, 642-053 Network+ Study Guide (4th Edition), Sybex, Alameda
CA, 2005, pp. 20-21, 23, 144