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Which of the following statements about digital certificates is false?
A digital certificate refers to a digital authentication that marks the identity information of the communication parties in the Internet communication, and people can use it to identify the identity of the other party on the Internet.
The CA center adopts the digital certificate authentication technology with digital encryption technology as the core. Through the digital certificate, the CA center can perform various processing such as encryption, decryption, digital signature and signature authentication for various information transmitted on the Internet.
Which of the following options use tunneling to communicate between IPv6 addresses?
Dual Stack: The dual-protocol stack technology refers to enabling both the IPv4 protocol stack and the IPv6 protocol stack on one device.
6to4: 6to4 is an IPv6 conversion transmission mechanism, which directly encapsulates IPv6 data packets in IPv4 data packets and embeds them in IPv6.The IPv4 address information of the address can be transmitted directly on the IPv4 network without explicitly configuring the tunnel. At the same time, a specially configured relay route allows it to communicate with the native IPv6 network.
ISATAP: ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) is an IPv6 translation transport mechanism that allows IPv6 packets to be transmitted through dual-stack nodes on an IPv4 network. Unlike 6over4, ISATAP regards the IPv4 network as the data link layer of a non-broadcast multi-access network, so it does not require the underlying IPv4 network infrastructure to support multicast.
NAT64: is a stateful network address and protocol conversion technology, generally only supports IPv6 network side user initiates connection to access IPv4sideInternet resources.
DHCP The protocol can assign some parameter information related to ICP/IP to the client. In this process, DHCP defines a variety of packets. The encapsulation protocol used by these packets at the transport layer is:
HW users are transferring a very large number of files via TFTP. What protocol does TFTP rely on for transmission?
TFTP (Trivial File Transfer Protocol, Simple File Transfer Protocol) is one of the TCP/IP protocol suite used between client and serverA protocol for simple file transfer between them, providing uncomplicated and inexpensive file transfer services. It is implemented based on the UDP protocol, and the port number is 69.
