A field technician is troubleshooting a Windows 11 workstation on a corporate network. The… — CompTIA A+ (Core 1 & Core 2)

A field technician is troubleshooting a Windows 11 workstation on a corporate network. The workstation can access public websites on the Internet, but it fails to connect to internal network shares using their hostnames (for example, `\\fileserver.corp.local`). Running `ipconfig /all` shows that the network adapter received a valid IPv4 address of $10.1.20.105$ and subnet mask $255.255.255.0$ via DHCP, but its DNS servers are manually specified as $1.1.1.1$ and $1.0.0.1$ . Pinging internal resources by their local IP address ( $10.1.20.10$ ) succeeds. Which of the following actions should the technician take to resolve the internal name resolution issue?

A
Change the static DNS server configuration on the IPv4 network adapter properties to use the default gateway address of $10.1.20.1$ .
B
Open Credential Manager in Control Panel and clear stored Windows Credentials associated with the network adapter.
Configure the TCP/IPv4 properties on the Ethernet adapter to obtain DNS server addresses automatically.Answer
D
Execute `ipconfig /registerdns` in Command Prompt to push local hostnames to the public DNS servers.

Answer

Configure the TCP/IPv4 properties on the Ethernet adapter to obtain DNS server addresses automatically from DHCP.

Configuring TCP/IPv4 properties to 'Obtain DNS server address automatically' allows the client workstation to receive internal corporate DNS server IP addresses via DHCP options. Internal DNS servers maintain the zone records required to resolve local domain names like `fileserver.corp.local`, while still forwarding external requests to public DNS servers.

Step-by-Step Solution

Analyze the reported symptoms and diagnostic output.

External connectivity and IP pinging work (

10.1.20.10

), confirming physical and IP layer connectivity. Internal hostname resolution fails because the DNS servers are statically set to public addresses (

1.1.1.1

and

1.0.0.1

) that do not hold records for `corp.local`.

Public DNS servers cannot resolve private corporate Active Directory domain names.

Identify the proper client network configuration fix.

Reverting the IPv4 DNS setting to 'Obtain DNS server address automatically' allows the adapter to retrieve internal DNS server IP addresses provided by the local DHCP server.

Internal DHCP servers deliver the IP addresses of local DNS servers that host the internal domain zone files.

Key Concept

Windows TCP/IPv4 Client Properties & DHCP DNS Assignment

Question

Answer

Step-by-Step Solution

Key Concept

Common Mistakes

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