SK0-004 · Question #635
A server technician has just replaced an Ethernet card in a server. Per company policy, all servers' network settings must be manually configured. The technician verified that the server can ping…
The correct answer is B. The default gateway is misconfigured. A server that can communicate within its subnet but not across subnets has a routing problem, specifically a missing or incorrect default gateway.
Question
A server technician has just replaced an Ethernet card in a server. Per company policy, all servers' network settings must be manually configured. The technician verified that the server can ping other servers on its subnet, but it cannot ping any servers that are on subnets other than its own. Which of the following is MOST likely the cause of this issue?
Options
- AThe server is not joined to the domain
- BThe default gateway is misconfigured
- CThe subnet mask is misconfigured
- DThe WINS is misconfigured
How the community answered
(53 responses)- A6% (3)
- B89% (47)
- C2% (1)
- D4% (2)
Why each option
A server that can communicate within its subnet but not across subnets has a routing problem, specifically a missing or incorrect default gateway.
Domain membership is a logical authentication concern and has no effect on IP-layer routing between subnets.
The default gateway is the IP address of the router that forwards traffic destined for remote subnets. When it is misconfigured or missing, the server has no path to send packets beyond its local subnet, which exactly matches the described symptom of successful local pings but failed cross-subnet pings.
A misconfigured subnet mask would more likely prevent communication with hosts on the same subnet or incorrectly classify remote hosts as local, not cleanly block only cross-subnet traffic.
WINS provides NetBIOS name resolution and has no role in IP routing or subnet reachability.
Concept tested: Default gateway role in inter-subnet routing
Source: https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/default-gateway-configuration
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