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Zorluk: OrtaIP Addressing and Network Configuration

A desktop computer on an enterprise network is unable to access local intranet shares or remote internet sites. A technician runs the `ipconfig /all` utility on the client machine and obtains the following network configuration details:

- IPv4 Address: 169.254.88.19169.254.88.19
- Subnet Mask: 255.255.0.0255.255.0.0
- Default Gateway: [Blank]
- DNS Servers: [Blank]

Based on this output, which of the following statements correctly identify the cause of the problem and the appropriate troubleshooting steps? (Select TWO.)

  1. The host automatically assigned itself an Automatic Private IP Addressing (APIPA) address after failing to contact a DHCP server.Cevap
  2. The technician should verify physical network connectivity and check whether the DHCP service or relay agent is operational.Cevap
  3. C
    The local DNS server configured this IP address assignment because host name resolution requests timed out.
  4. D
    An unmanaged Layer 2 switch must be installed to route traffic between this workstation and external subnets.

Cevap

The client computer self-assigned an APIPA address because it could not communicate with a DHCP server, and the technician should troubleshoot physical connectivity and verify the operation of the DHCP server or relay agent.
When a Windows computer is configured for dynamic IP addressing (DHCP) but does not receive a response from a DHCP server, the operating system self-assigns an APIPA address in the range 169.254.0.1169.254.0.1 to 169.254.255.254169.254.255.254. Because APIPA does not configure a default gateway or DNS servers, external communication fails. Troubleshooting requires checking physical connection integrity and ensuring the DHCP service or relay agent is running and accessible.

Adım Adım Çözüm

1
Analyze the IP address output from `ipconfig /all`
The address 169.254.88.19169.254.88.19 falls within the 169.254.0.0/16169.254.0.0/16 range.
Addresses in this range are Automatic Private IP Addressing (APIPA) addresses assigned by the operating system when DHCP configuration fails.
2
Determine appropriate remediation actions for APIPA condition
Identify physical layer issues (cable disconnects, disabled port) or service failures on the DHCP server/relay.
Resolving DHCP lease acquisition restores standard network parameters including gateway and DNS server addresses.

Anahtar Kavram

APIPA identification and DHCP troubleshooting
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