SK0-004 · Question #194
A server technician is connecting a server to a switch in the server room. Both the server and the switch are equipped with 10 Gigabit Ethernet adapters. Which of the following cable choices would…
The correct answer is C. CAT6 straight-through cable. CAT6 straight-through cable is the correct choice to connect a server to a switch at 10 Gigabit Ethernet speeds.
Question
A server technician is connecting a server to a switch in the server room. Both the server and the switch are equipped with 10 Gigabit Ethernet adapters. Which of the following cable choices would produce the BEST throughput?
Options
- ACAT6 rollover cable
- BCAT5e straight-through cable
- CCAT6 straight-through cable
- DCAT5e crossover cable
How the community answered
(35 responses)- A6% (2)
- B3% (1)
- C91% (32)
Why each option
CAT6 straight-through cable is the correct choice to connect a server to a switch at 10 Gigabit Ethernet speeds.
A rollover cable is a console management cable with a full pin reversal used for CLI access to routers and switches, not for carrying Ethernet data traffic.
CAT5e is rated for a maximum of 1000BASE-T (1 Gbps) and does not meet the electrical specifications required for 10GBASE-T, capping throughput well below the adapter capability.
A straight-through cable is the proper wiring for connecting unlike devices - a server (DTE) to a switch (DCE) - because the transmit pair on one end connects directly to the receive pair on the other, as each device handles the crossing internally. CAT6 cable supports 10GBASE-T at distances up to 55 meters, making it compatible with the 10 Gigabit Ethernet adapters installed in both the server and the switch. Among the options listed, CAT6 straight-through is the only cable that provides both the correct pinout for a server-to-switch link and sufficient bandwidth for 10 GbE throughput.
CAT5e cannot support 10 Gbps speeds, and a crossover cable is incorrect for a server-to-switch connection where the switch port already performs the pair crossing internally.
Concept tested: Cable category and type selection for 10GbE server-switch link
Source: https://standards.ieee.org/ieee/802.3an/1127/
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