400-101题库答案更新

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asunasun

anyisu 发表于 2018-8-25 13:18
. m; R! n1 b3 i0 s1 rQUESTION NO. 22
Which router on an IS-IS network generates the IS-IS pseudonode?
# z9 L( W  L, U$ G  T+ b' B3 D5 HA. DIS

+ o8 D+ {2 o& N) y( k$ j1 _What is the DIS?
- }5 H% ]" w) y1 U. C6 y$ bOn broadcast multi-access networks, a single router is elected as the DIS. There is no backup DIS elected. The DIS is the router that creates the pseudonode and acts on behalf of the pseudonode.
  f2 H6 c8 H  q, r5 R$ T
; j) j, u' z6 bTwo major tasks are performed by the DIS:

! I5 l; C: Y5 `$ E# SCreating and updating pseudonode LSP for reporting links to all systems on the broadcast subnetwork. See the Pseudenode LSP section for more information.

Flooding LSPs over the LAN.

https://www.cisco.com/c/en/us/su ... 9627-DIS-LSP-1.html