350-029 Sample Question

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

350-029 Sample Question

Question: 20

In optical channel transport unit overhead (OTU OH), what are general communication channels 1 and 2 (GCC1/GCC2) used for?

A. for trail trace identification
B. as the backward defect indicator
C. to transmit information between OTU termination points
D. to extend command and management functions over several frames
E. General communication channels 1 and 2 (GCC1/GCC2) do not belong to OTU OH.

Answer: E

Explanation:

OTU overhead: The OTU overhead consists of three bytes for section monitoring (SM), a two-byte general communications channel (GCC0), and two bytes reserved for future international standardization.