100-140 Question 198
Single answerA network administrator is troubleshooting an IPv6 network and notices that a device is using a link-local address instead of a global address. The administrator suspects that DHCPv6 might not be functioning correctly. What is the primary purpose of DHCPv6 in this scenario?
- A
To assign a unique global IPv6 address to the device
- B
To ensure the device uses a link-local address for communication within the local network
- C
To enable the device to communicate with other devices on different networks
- D
To provide DNS server information to the device
Show answer and explanation
Correct answer: A
Explanation
The purpose of DHCPv6 is to dynamically assign global IPv6 addresses to devices, allowing them to communicate beyond the local network. When a device only has a link-local address, it cannot communicate across different networks. This issue indicates that DHCPv6 is not functioning correctly, as its role includes assigning global addresses to devices.
- A. Correct.
Correct: DHCPv6 is used to dynamically assign global IPv6 addresses to devices, ensuring they can communicate beyond the local link.
- B. Incorrect.
Incorrect: Link-local addresses are automatically generated by the device and are not assigned by DHCPv6. These addresses are used for communication within the local network only.
- C. Incorrect.
Incorrect: While having a global address enables communication across different networks, assigning such an address is the specific role of DHCPv6.
- D. Incorrect.
Incorrect: Although DHCPv6 can provide DNS server information, its primary purpose is to assign global IPv6 addresses, which is the key focus in this scenario.