Crucial Exams

CompTIA Server+ SK0-005 Practice Question

During maintenance, a new Linux backup server was attached to a Gigabit Ethernet port on the core switch. The link LEDs on both ends are green, but the server cannot ping any host-including the default gateway-on the same 10.120.0.0/24 subnet. A packet capture on the server shows ARP requests leaving the interface tagged for VLAN 120 (0x8100) and no replies returning. A review of the switch configuration reveals that the connected interface is set to switchport mode access and assigned to VLAN 120 (untagged). Other hosts on VLAN 120 that use the same switch can communicate normally.

Which condition is most likely causing the server's loss of network connectivity?

  • A speed/duplex mismatch exists between the NIC and the switch port.

  • The server is sending 802.1Q-tagged frames to an access port, causing the switch to drop the traffic.

  • The server's default gateway is misconfigured.

  • The primary DNS server configured on the host is unreachable.

CompTIA Server+ SK0-005
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