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Question 183 - H12-261 discussion
Which of the following statements regarding IS-IS authentication are true?
A.
After area authentication is configured on a router, IIH PDUs, SNPs, and LSPs sent by the router must carry an authentication TLV.
B.
Interface authentication can authenticate Level-1 and Level-2 Hello PDUs.
C.
After interface authentication is configured on a router, IIH PDUs sent by the router must carry an authentication TLV.
D.
Two routers can establish a neighbor relationship when they are configured with area authentication and interface authentication, respectively, and are configured with the same authentication password.
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