A technician is troubleshooting network connectivity on a desktop computer connected to an enterprise local area network. The host can successfully ping other computers on the local subnet (), but users cannot access resources on remote subnets or reach internet services. Pinging an external address such as results in a "Destination host unreachable" error message.
Executing `ipconfig /all` on the workstation displays the following network configuration parameters:
| Parameter | Configured Value |
|---|---|
| IPv4 Address | |
| Subnet Mask | |
| Default Gateway | |
| DNS Server |
Which of the following configuration errors is the primary cause of the external connectivity issue?
- The default gateway IP address resides on a different IP subnet than the workstation.Cevap
- BThe workstation failed to acquire a DHCP lease and automatically assigned itself an APIPA address.
- CThe DNS server address is acting as a DHCP server and refusing to resolve default gateway hostnames.
- DThe local unmanaged Layer 2 switch is improperly configured to route packets between subnets.
Cevap
The default gateway IP address resides on a different IP subnet than the workstation.
With a subnet mask of , all devices on the local subnet must have IP addresses starting with . The gateway address is on a different subnet (), making it unreachable directly by the workstation. Without a valid local default gateway, traffic targeting outside IP addresses (such as ) cannot be routed off the local network.
Adım Adım Çözüm
Anahtar Kavram
IP Subnetting and Default Gateway Assignment
Tahmini Süre:1m 15s