Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
A network engineer is installing an IPv6-only capable device (CCNA 200-301)
A network engineer is installing an IPv6-only capable device. The client has requested that the device IP address be reachable only from the internal network.
Which type of IPv6 address must the engineer assign?
A. IPv4-compatible IPv6 address
B. unique local address
C. link-local address
D. aggregatable global address
Solution
Correct answer: B. unique local address.
Unique local addresses (ULAs) are IPv6 addresses that are not routable on the internet and are intended for use within a single organization or site. They are not globally unique, but are unique within the organization. This makes them suitable for use on internal networks where the device does not need to be reachable from the internet.
IPv4-compatible IPv6 addresses (A) are used for dual-stacked networks, where both IPv4 and IPv6 are used. They are not suitable for an IPv6-only network.
Link-local addresses (C) are used for communication between devices on the same link (i.e., the same subnet). They are not routable and are not suitable for use as a device's primary IP address.
Aggregatable global addresses (D) are globally unique and routable on the internet, which is not what the client requested.
Category: IP Connectivity