多选题Which two statements are true about IS -IS routing?（）ABased on the default timers, OSPF d etects a failure faster than IS - IS does.BOSPF default timers permit more tuning than IS - IS does.CIS - IS is more efficient than OSPF in the use of CPU resources.DOSPF is more scalable than IS - IS because of its ability to identify normal, stub, an d NSSA areas.EIS - IS and OSPF are both Open Standard, link - state routing protocols which support VLSM.
多选题
Which two statements are true about IS -IS routing?（）
A
Based on the default timers, OSPF d etects a failure faster than IS - IS does.
B
OSPF default timers permit more tuning than IS - IS does.
C
IS - IS is more efficient than OSPF in the use of CPU resources.
D
OSPF is more scalable than IS - IS because of its ability to identify normal, stub, an d NSSA areas.
E
IS - IS and OSPF are both Open Standard, link - state routing protocols which support VLSM.
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