2 WHAT ARE THE MAIN FEATURES OF IPV6 0?

Teach you to set up an IPv6 network, watch live TV at any time, and there are other features waiting for you to unlock.

Features (1) The length of the IPv6 address is 128 bits, and the address space is increased by 2 Schematic diagram of the IPv6 backbone node in China.

2] 6 power multiples;

2) Flexible IP packet header format. The variable-length option fields in IPv4 are replaced with a series of fixed-format extension headers. In IPv6, the options section also appears in a different way, so that routers can simply pass through the options without doing any processing, speeding up packet processing.

3) IPv6 simplifies the packet header format with only 8 fields, speeding up packets and improving throughput.

4) Improve security. Authentication and privacy are key features of IPv6;

6) allow the protocol to continue to evolve and add new features to adapt it to future technological developments;

An important application of the popularization of IPv6 is the Internet ID card VIEID under the network real-name system, the reason why it is difficult to realize the network real-name system based on IPv4 at present, an important reason is because of the sharing of IP resources, because IP resources are insufficient, so different people share an IP in different time periods, and IP and Internet users can not achieve one-to-one correspondence.

Under IPv4, it is more troublesome to check people according to IP, and the telecommunications bureau needs to keep a period of Internet logs, usually because of the large amount of data, operators only keep about three months of Internet logs, such as checking the user who posted a certain IP in the previous year can not be realized.

The emergence of IPv6 can solve the problem of real-name system once and for all technically, because at that time, IP resources will no longer be tight, and operators have enough IP resources.

When an Internet user's IP is fixed, everything you do at any time is bound to a unique IP, and everything you do on the network is documented and cannot be denied at any time.

The problem of insufficient IPv4 addresses can be completely solved.

The ability to quickly connect to the network without manual configuration enables true plug-and-play.

The integrity and confidentiality of end-to-end communication at the network layer are guaranteed. It can greatly reduce network latency.

IPv6 is an abbreviation for "Internetprotocol version 6", which is a next-generation IP protocol designed by the Internet Engineering Task Force (IETF) to replace IPv4.

IPv6 uses a length of 128 bits and can provide 2 128 addresses, which can be said to provide IP addresses without any restrictions, and its biggest and most practical advantage is that there are enough IP addresses.

IPv6 support means that this software or ** supports users to use IPv6 networks to access applications. The characteristics of IPv6 should be like this, and it is precisely this feature that enables IPv6 to gradually replace IPv4.

1. For IPv6 addresses, its length is 128 bits, and the corresponding address space has increased from the original number by 2 128-2 32.

2. IPv6 also has a very flexible format for IP packet headers. Typically, a series of fixed-format extension headers are used to replace some of the variable-length option fields in IPv4. There is also a corresponding change in the appearance mode of the option part in IPv6, so that the router can easily pass by this option and do not do any processing, which improves the packet processing speed by a large extent.

3. In terms of IPv6, it simplifies the format of the corresponding packet header, and the corresponding fields only contain 8, so that the corresponding packet ** will be very fast, and the corresponding throughput will be improved.

4. This IPv6 can also continuously improve security. Authentication and privacy are one of the most critical features of IPv6.

5. IPv6 can support many service types.

The R&D company for IPv6 is IETF:

The corresponding full name is Internet Engineering Task Force. The company designed IPv6 to replace the popular version of IPv4. But why replace?

This is mainly due to the increasing number of computers, tablets and other related electronic products.

Answers]: a, b, c, d

Textbook, pp. p14-17

IPv6 offers several advantages:

It has ample space for the town site Xinsui.

Use smaller routing tables.

Added enhanced multicast support and stream control to prevent chaos, and added support for auto-configuration.

With increased security.