What three major tasks are performed by a Designated Intermediate System in an ISIS pseudonodeenvironment？（）
- A、Updating the pseudonode LSP
- B、maintaining pseudonode link-state information
- C、creating the pseudonode
- D、flooding LSPs over the LAN
- E、election of the pseudonode
正确答案:A,C,E
答案解析:有
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