A AND D. SW2 HAS EFFECTIVELY DISABLED IEEE STANDARD AUTONEGOTIATION...
4.
A and D. SW2 has effectively disabled IEEE standard autonegotiation by configuring
both speed and duplex. However, Cisco switches can detect the speed used by the
other device, even with autonegotiation turned off. Also, at 1 Gbps, the IEEE
autonegotiation standard says to use full duplex if the duplex setting cannot be
negotiated, so both ends use 1 Gbps, full duplex.