A. Even if the two entities are not in the same PRI CA, CA, the real system can complete the authentication as long as both parties can identify each other.

B. When the received body is within the validity period of the certificate, but the device itself is not valid, the device time error certificate is lost.

C. The integrity of the digital name guarantee number is signed.

D. The number contains the public information certificate key.

A. 300,200,100

B. 400,300,200,100

C. 100,200,300,400

D. 100,200,300

A. Type of Service and bandwidth usage

B. Source IP address and specific protocol (such as FTP and HTTP)

C. TTL and source IP address of packets

D. Source IP address and Layer 2 source address

A. NAT64

B. ISATAP

C. IPv6 over IPv4

D. Dual Stack

A. IS-IS authentication cannot be applied to IPv6 environments.

B. IS-IS SNP and LSP can be flooded normally only when the domain authentication mode and password of all routers in the same routing domain are MD5 and hello.

C. This command enables IS-IS Hello PDUs to carry authentication information.

D. Routing domain authentication enables Level-1 and Level-2 SNPs and LSPs to carry authentication information.