4A0-C02 Exam Certification

Query: 1 Click on the exhibit. An replace travels from AS 135000 to AS 137000, traversing each 32-bit and 16-bit AS paths. What is going to the AS Path be when the replace reaches AS 137000? A. 140000 200 135000 B. 137000 140000 200 135000 C. 140000 23456 135000 D. 135000 200 140000 Reply: A Query: 2 Which of the next is FALSE concerning the 16-bit public autonomous system numbers? A. They’re allotted to the RIRs by ICANN/IANA. B. They’re used when connecting ASs on the Web. C. They vary from 1 to 56319. D. They’re assigned by the ISPs for enterprise networks. Reply: D Query: 3 Click on the exhibit. Provided that ISP 1 and ISP 2 are Tier 2 suppliers, and that ISP Three and ISP Four are Tier 1 suppliers, what’s the almost definitely relationship between the ISPs? A. ISP 1 and ISP 2 have a public transit relationship, whereas ISP Three and ISP Four have a non-public transit relationship. B. ISP 1 and ISP 2 have a non-public transit relationship, whereas ISP Three and ISP Four have a public transit relationship. C. ISP 1 and ISP 2 have a non-public peering relationship, whereas ISP Three and ISP Four have a public peering relationship. D. ISP 1 and ISP 2 have a public peering relationship, whereas ISP Three and ISP Four have a non-public peering relationship. Reply: D Query: 4 Click on the exhibit. If router A originates an replace for prefix 192.168.0.1/27, what is going to the replace comprise when it reaches router B? A. AS Path of 65200, local-preference of 100. B. AS Path of 65200, local-preference of None. C. Null AS Path, local-preference of 100. D. Null AS Path, local-preference of None. Reply: C Query: 5 BGP is configured on two friends, routers A and B. Router A is configured with a Maintain Time timer of 60 seconds and a Keepalive timer of 25 seconds. Router B is configured with a Maintain Time timer of 90 seconds and a Keepalive timer of 70 seconds. What is going to the energetic Keepalive timer be on router B? A. 70 seconds B. 25 seconds C. 20 seconds D. 30 seconds Reply: C Query: 6 Which of the next statements concerning the Web is FALSE? A. It’s a world community counting on interconnections supplied by Web service suppliers. B. It’s a steady and interconnected set of public IP networks, marketed and shared throughout the globe. C. It’s a settlement-free world community that gives interconnection between Web service suppliers. D. It’s a community that enables any Web service supplier to achieve each different Web service supplier on the planet. Reply: C Query: 7 Which of the next is the minimal requirement for an AS to be thought of multi-homed? A. A single connection to a single service supplier. B. Two connections to a single service supplier. C. Two connections to 2 totally different service suppliers. D. A number of connections to totally different service suppliers. Reply: B Query: 8 What are the well-known necessary BGP attributes? A. Origin, Subsequent Hop and Native Choice. B. Native choice, AS Path and Subsequent Hop. C. Aggregator, Subsequent Hop and AS Path. D. AS Path, Subsequent Hop and Origin. Reply: D Query: 9 Which of the next greatest describes the connection between regionally configured insurance policies and the route of visitors? A. Import insurance policies have an effect on the way in which the native AS receives visitors, whereas export insurance policies have an effect on the way in which it sends visitors. B. Import insurance policies have an effect on the way in which the native AS sends visitors, whereas export insurance policies have an effect on the way in which it receives visitors. C. Each import and export insurance policies have an effect on the way in which the native AS receives visitors, however not the way in which it sends visitors. D. Each import and export insurance policies have an effect on the way in which the native AS sends visitors, however not the way in which it receives visitors. Reply: B Query: 10 What sort of BGP attribute is the Native Choice? A. Elective transitive attribute. B. Elective non-transitive attribute. C. Properly-known necessary attribute. D. Properly-known discretionary attribute. Reply: D Query: 11 Which of the next is TRUE? A. There can solely be one neighborhood related to a route. B. Neighborhood is an non-obligatory non-transitive attribute. C. Neighborhood is an non-obligatory transitive attribute. D. Neighborhood is a well known discretionary attribute. Reply: C Query: 12 Click on the exhibit. Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 deal with a BGP replace acquired from ISP 2? A. The replace is shipped to router R2 in ISP 1. B. The replace is shipped to routers R2 and R3 in ISP 1. C. The replace is shipped to all routers in ISP 1. D. The replace is shipped to routers R2 and R3 in ISP 1, and to router R3 in ISP 2. Reply: C Query: 13 Click on on the exhibit.

AS 65540 is utilizing MPLS to offer BGP shortcuts for its iBGP routing. Which routers have to be configured with the “configure router bgp igp-shortcuts rsvp-te” command? A. Routers R6, R1, R4 and R5. B. Routers R1and R4. C. Routers R1, R2, R3 and R4. D. Routers R2 and R3. Reply: B Query: 14 Which of the next is TRUE if the state of 1 BGP neighbor reveals Energetic? A. The neighbor will ship a Keepalive message. B. The router is making an attempt to provoke a TCP connection to that neighbor. C. The router acquired an Open message with the right parameters. D. The router is actively exchanging updates with that neighbor. Reply: B Query: 15 Which of the next about default BGP habits is FALSE? A. Subsequent Hop is modified in iBGP updates. B. Origin Code is NOT modified in eBGP updates. C. AS Path is modified in eBGP updates. D. Native Choice is NOT modified in iBGP updates. Reply: A Query: 16 Why is a full mesh of iBGP friends required? A. To make sure correct route propagation inside a transit AS. B. To make sure that all routers are straight related. C. To make sure that all routers run iBGP inside a transit AS. D. To maximise management aircraft scalability. Reply: A Query: 17 Click on the exhibit. Assume all router-IDs are correctly configured. Which of the next configurations is required on the Alcatel-Lucent 7750 SR router A to determine an IPv6 BGP session to router D? A. Possibility A B. Possibility B C. Possibility C D. Possibility D Reply: C Query: 18 Take into account two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system deal with 10.10.10.1, and router R2 has system deal with 10.10.10.2. Which of the next configurations on router R2 can set up a BGP session with router R1? A. Possibility A B. Possibility B C. Possibility C D. Possibility D Reply: B Query: 19 A router in AS 65100 receives three routes for 138.120.0.0/16. The primary route has an AS Path of 65200 65400 65300 and a neighborhood choice of 150. The second route has an AS Path of 65200 65300 and a neighborhood choice of 100. The third route has an AS path of 65600 65300 and a neighborhood choice of 200. Which route will seem within the RIB-In? A. Solely the primary route will seem within the RIB-In. B. Solely the second route will seem within the RIB-In. C. Solely the third route will seem within the RIB-In. D. All routes will seem within the RIB-In. Reply: D Query: 20 The consumer of an Alcatel-Lucent 7750 SR needs to see the impact of fixing an import coverage instantly. What’s the greatest command to drive re-evaluation of the import coverage with minimal influence? A. Configure router bgp shutdown B. Clear router bgp neighbor delicate C. Clear router bgp neighbor soft-inbound D. Clear router bgp protocol Reply: C Query: 21 Click on the exhibit. Assume all router-IDs are correctly configured, and link-local IPv6 addresses are used to determine the eBGP classes. Which of the next is the MINIMAL configuration required on router A in order that router B can change visitors with router D? A. Possibility A B. Possibility B C. Possibility C D. Possibility D Reply: C Query: 22 A BGP router has loopback interfaces 192.168.1.1/27 and 192.168.2.1/27 marketed into BGP utilizing the next export coverage. The “aggregate 192.168.0.0/16” command is executed. What’s the impact of this configuration? A. A single route for 192.168.0.0/16 is marketed. B. BGP routes 192.168.1.0/27, 192.168.2.0/27, and 192.168.0.0/16 are marketed. C. BGP routes 192.168.1.0/27 and 192.168.2.0/27 are marketed, and 192.168.0.0/16 seems as a “Blackhole” route within the route desk solely. D. The given export coverage is invalid. Reply: C Query: 23 When an Alcatel-Lucent 7750 SR receives a BGP route with an AS Path loop, what motion is taken by default? A. The route is ignored. B. The route is flagged as invalid and positioned within the LOC-RIB. C. The route is flagged as invalid and positioned within the RIB-In. D. The route is flagged as invalid and positioned within the RIB-Out. Reply: C Query: 24 What occurs to a route that’s rejected by an import coverage on an Alcatel-Lucent 7750 SR? A. The route is discarded. B. The route is stored within the RIB-In, however marked as an invalid route. C. The route is moved to the LOC-RIB, however not marked as a used route. D. The route is moved to the route desk, however to not the FIB. Reply: B Query: 25 A router receives two routes from its neighbors: a route from OSPF for 10.0.0.0/24, and a route from BGP for 10.0.0.0/8. Each routes have reachable subsequent hops. Which of the next is TRUE? A. Solely the BGP route is within the route desk. B. Each routes are within the route desk. C. Not one of the routes is within the route desk. D. Solely the OSPF route is within the route desk. Reply: B

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