Here you have the best Juniper JN0-347 practice exam questions
Which two statements describe aggregate routes? (Choose two.)
Aggregate routes help in summarizing multiple routes into a single route entry, which helps in reducing the size of routing tables. By combining several specific routes into one aggregate route, internal routing instabilities are hidden from external peers. This means that routing issues within a network do not propagate to external peers, promoting stability. Therefore, the correct answers are that internal routing instabilities can be hidden from external peers and groups of routes are combined into a single route entry.
You are configuring a new BGP service to your service provider. You want to ensure that BGP is fully established and has all the routes in the route table before allowing traffic to transit the router.
Which feature achieves this requirement?
To achieve the requirement of ensuring that BGP is fully established and has all the routes in the route table before allowing traffic to transit the router, the IS-IS overload bit is the correct feature. This feature can temporarily prevent the router from being used for transit traffic until it has fully synchronized its BGP routes. It tells other routers in the network to avoid using this router for transit traffic until it is ready, thereby ensuring the desired state is met before traffic is allowed to pass through.
Click the Exhibit button.
You are monitoring your IS-IS router and issue the command shown in the exhibit.
Which two statements are true in this scenario? (Choose two.)
The loopback address of the local router is 10.100.0.1, which is indicated by the IP address shown next to 'IP router id' and 'IP address'. The name of the local device is r1, which is stated next to 'Hostname'. The other address, 5.0.0.100, is identified as the IS-extended neighbor and not the loopback address of the local router.
Click the Exhibit button.
A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.
Referring to the exhibit, which route would be selected?
The selection of a BGP route follows several criteria in a specific order. Firstly, the route with the highest local preference is preferred. Both Route B and Route D have the same local preference of 150. Next, the origin code is considered, where 'I' (IGP) is more preferred over '?' (Incomplete). Since Route D has an origin code of 'I' and Route B has an undefined origin code, Route D is the preferred route.
Click the Exhibit button.
Referring to the exhibit, which path will traffic from R6 take to reach R1?
In the exhibit, the costs are labeled on the links between routers. To determine the path R6 will take to reach R1, we need to compare the total costs of each path. If R6 takes the path R6 > R4 > R2 > R1 (Option A), the total cost will be 5 (R6 to R4) + 10 (R4 to R2) + 5 (R2 to R1) = 20. Option D follows the path R6 > R5 > R3 > R2 > R1 with a total cost of 5 (R6 to R5) + 5 (R5 to R3) + 3 (R3 to R2) + 5 (R2 to R1) = 18. Since 18 is less than 20, the path with the lowest cost from R6 to R1 is via R6 > R5 > R3 > R2 > R1, making D the correct answer.