A) The route 192.168.2.0/24 in the routing table of R4 has two next hops. (Correct) R3 and R6 import 192.168.2.0/24 into BGP. R2 and R5 (Route Reflectors) learn this route and reflect it to their clients (R1, R3, R4, R6). R4 receives two valid paths to 192.168.2.0/24 via R2 and R5 (both iBGP peers). Since both routes have the same BGP attributes and cost, they are installed as equal-cost paths in R4's routing table. Statement A is correct: The routing table of R4 has two next hops for 192.168.2.0/24. and D) The routing table of R1 contains the route 192.168.2.0/24. (Correct) R3 and R6 import 192.168.2.0/24 into BGP. R2 and R5 (Route Reflectors) reflect this route to their iBGP peers, including R1. Since R1 is an iBGP client of R2 and R5, it will receive 192.168.2.0/24 and install it in its routing table. Statement D is correct: The routing table of R1 contains the route 192.168.2.0/24. Final Conclusion: A. The route 192.168.2.0/24 in the routing table of R4 has two next hops. B. The routing table of R1 does not necessarily contain two equal-cost default routes. C. The routing table of R4 does not necessarily contain two equal-cost default routes. D. The routing table of R1 contains the route 192.168.2.0/24. Thus, the correct answers are: A, D.

B) The routing table of R1 contains two equal-cost default routes. (Incorrect) In an IS-IS Level-1-2 setup, default routes are usually provided to Level-1 routers from an ABR (like R2). However, the question does not mention that R1 is receiving two default routes or that it is in an equal-cost multipath (ECMP) scenario. R1 may have only one default route, depending on route preference and cost. Statement B is incorrect: The routing table of R1 does not necessarily contain two equal-cost default routes.

C) The routing table of R4 contains two equal-cost default routes. (Incorrect) Similar to R1, R4 is also a Level-1 router in IS-IS. If R4 were receiving default routes from multiple ABRs (R2 and R5), then it could have equal-cost paths. However, there is no indication that R4 is receiving two default routes in this scenario. Statement C is incorrect: The routing table of R4 does not necessarily contain two equal-cost default routes.