Question: 21
How do routers in an IS-IS Level-1 domain exit to reach other Level-1 domains? (Choose two.)
A. Level-1 routers use default routes announced by Level-2 routers in Level-1 domain
B. Level-1 routers use default routes installed based on ATT bit (Attach Bit) in announcements from Level-1-2 router
C. Level-1 routers use specific routes, for other Level-1 domain, announced by Level-1-2 router by route leaking feature of Cisco IOS
D. Level-1 routers use specific routes, for other Level-1 domain, announced by Level-2 router by route-leaking feature of Cisco IOS
Answer: B,C
How do routers in an IS-IS Level-1 domain exit to reach other Level-1 domains? (Choose two.)
A. Level-1 routers use default routes announced by Level-2 routers in Level-1 domain
B. Level-1 routers use default routes installed based on ATT bit (Attach Bit) in announcements from Level-1-2 router
C. Level-1 routers use specific routes, for other Level-1 domain, announced by Level-1-2 router by route leaking feature of Cisco IOS
D. Level-1 routers use specific routes, for other Level-1 domain, announced by Level-2 router by route-leaking feature of Cisco IOS
Answer: B,C
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