2.5 IPv6 Flashcards
What is the primary reason IPv6 was developed?
To solve IPv4 address exhaustion.
How many bits are in an IPv6 address?
128 bits.
Approximately how many unique addresses does IPv6 support?
340 undecillion (3.4 × 10³⁸).
How does IPv6 improve network efficiency compared to IPv4?
No broadcast traffic, no fragmentation, and better routing efficiency.
What addressing technique allows IPv6 to operate alongside IPv4?
Dual-stack implementation.
What method allows IPv6 packets to be transmitted over IPv4 networks?
Tunneling.
What notation does IPv6 use?
Hexadecimal with colons (e.g., 2001:db8::1).
What are the three types of IPv6 addresses?
Unicast, Multicast, Anycast.
What is the prefix for IPv6 Global Unicast addresses?
2000::/3.
What is the prefix for IPv6 Link-Local addresses?
FE80::/10.
What is the prefix for IPv6 Multicast addresses?
FF00::/8.
What type of IPv6 address is used to communicate with multiple hosts at once?
Multicast.
What type of IPv6 address is used to communicate with the nearest service instance?
Anycast.
What does SLAAC stand for in IPv6?
Stateless Address Auto-Configuration.
How does SLAAC help IPv6 devices?
It allows devices to assign themselves an IPv6 address without DHCP.
What is EUI-64 in IPv6?
A method that generates an IPv6 host address based on a device’s MAC address.
Why is DHCP often unnecessary in IPv6 networks?
SLAAC and Neighbor Discovery Protocol (NDP) provide automatic IP assignment.
What protocol replaces ARP in IPv6?
Neighbor Discovery Protocol (NDP).
What are two methods used to transition from IPv4 to IPv6?
Dual-stack and tunneling.
What is a key advantage of IPv6 over IPv4?
Nearly unlimited address space and built-in security features.
What is the shorthand notation for IPv6 addresses?
Removing leading zeros and compressing consecutive zero blocks (e.g., 2001:db8::1).
What is the primary purpose of an IPv6 Link-Local address?
To allow devices to communicate within a local network without a router.
What is the difference between an IPv6 Unicast and Anycast address?
Unicast is assigned to a single device, while Anycast is assigned to multiple devices but routes to the nearest one.
