← IPV6 Test
6 Written Questions
6 Multiple Choice Questions
- IPv6 uses a 128 bit address space
That is about 340,282,366,920,938,000,000,000,000,000,000,000,000 addresses
- IPv6 has the ability for entire subnets to move from one router to another router without needing address re-assignment
- An Anycast address is an address that is applied to more than one interface.
When a packet is routed to an Anycast address it is delivered to the first interface discovered configured with that Anycast address
- When a packet is sent to a multicast address the packet is delivered to all hosts that are assigned that multicast address
- TTL is now a hop count rather than time based for simpler calculation
- Routers do not fragment IPv6 Packets
Maximum packet size must be established prior to transmission
5 True/False Questions
Global Multicast Support → When a packet is sent to a multicast address the packet is delivered to all hosts that are assigned that multicast address
Link-Local → Unique local address are similar in nature to IPv4 private Addresses in that they are not assigned by a numbering authority, however they are probably globally unique and are routable within participating sites
Unique Local → Link local address are addresses that are automatically configured using the interfaces hardware address.
These addresses are not routable!
Link local address use the prefix fe80::/10
MTU → Maximum transmit unit:
Path MTU Discovery
-Packet is sent using routers MTU, any router along the way that can not handle the packet sends an ICMPv6 packet to big message back with its MTU
Benefits of IPV6 → Address Exhaustion