IPv6

An IPv6 address consists of how many bits?​

128 bits

In IPv6, an anycast address defines a group of computers with addresses that have the same prefix.

True, An anycast address is an address that is assigned to a set of interfaces that typically belong to different nodes. A packet sent to an anycast address is delivered to the closest interface (as defined by the routing protocols in use) identified by the anycast address.

The hop limit controls the lifetime of an IPv6 datagram.

True, lifetime on the network all IP packets have an 8 bit Time to Live (IPv4) or Hop ... If a router (or any IPv6 host) receives an IPv6 packet with a Hop Limit of zero or ... When discarding a packet with a TTL or Hop Limit of one or zero the router in ... command and control and remote access exploits and more.

IPv6 Anycast provides an any-to-many communication model.

True, three of the characteristics of an IPv6 anycast address are delivery of packets to the group interface that is closest to the sending device, the same address for multiple devices (not hosts), and a one-to-many communication model.

The dual-stack approach refers to a network node having both IPv4 and IPv6 support.

True, you should use both IPv4 and IPv6 addresses. Nearly everyone on the Internet currently has an IPv4 address, or is behind a NAT of some kind, and can access IPv4 resources. ... If you want your site to be reliable for these users, you must serve it via IPv6 (and the ISP must have deployed IPv6).

IPv6 doesn't support unicast addressing.

Yes, Global unicast addresses (GUAs), also known as aggregatable global unicast addresses, are globally routable and reachable in the IPv6 Internet. They are equivalent to public IPv4 addresses. They play a significant role in the IPv6 addressing architecture.

What is the prefix for an IPv6 link-local address?

fe80

What is the term for an IPv6 address that is used by a host to test its own connectioin without going onto its network?

Loopback address Unicast addresses identify a single interface. Anycast addresses identify a set of interfaces in such a way that a packet sent to an anycast address is delivered to a member of the set.

In an IPv6 address, two colons (::) are used to represent successive hexadecimal fields of zeros.

True

In IPv6 addresses, addresses start with eight 0s are called multicast addresses.

True, A network prefix in IPv6 is given by a CIDR format-liked number at the end of the address. Explanation: In IPv6 address format, the starting bits are specified with eight 0s to represent reserved addresses.(0000 0000)