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Zorluk: KolayTroubleshooting IP Addressing and DHCP Services

A network administrator runs the `ipconfig` command on a user's workstation that is experiencing network connectivity issues. The command output displays an IPv4 address of 169.254.108.42169.254.108.42 with a subnet mask of 255.255.0.0255.255.0.0. Which of the following best explains the root cause of this configuration?

  1. The workstation failed to contact a DHCP server and automatically assigned itself an Automatic Private IP Addressing (APIPA) address.Cevap
  2. B
    The default gateway IP address was misconfigured on the workstation's network adapter.
  3. C
    The DHCP server's scope is configured with an incorrect CIDR subnet mask.
  4. D
    The workstation's network interface card is disabled in the operating system.

Cevap

The workstation failed to contact a DHCP server and automatically assigned itself an Automatic Private IP Addressing (APIPA) address.
When a network interface configured for dynamic addressing cannot reach a DHCP server, Windows client operating systems automatically assign a link-local IP address in the range of 169.254.0.1169.254.0.1 to 169.254.255.254169.254.255.254 using APIPA.

Adım Adım Çözüm

1
Analyze the IP address output from ipconfig
The IPv4 address is 169.254.108.42.
Addresses within the range 169.254.0.0/16 are reserved for Automatic Private IP Addressing (APIPA).
2
Identify the conditions under which APIPA is used
APIPA is invoked when a DHCP client requests an IP address lease but receives no response from any DHCP server on the local network or via DHCP relay.
This mechanism allows link-local communication when centralized network IP assignment fails.

Anahtar Kavram

APIPA Address Symptom Diagnosis
Tahmini Süre:45s
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