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- CCNA Routing and Switching 200-105
46.
Routers A and B use EIGRP. How does router A watch for the status of router B so
that router A can react if router B fails?
- A.By using EIGRP Hello messages, with A needing to receive periodic Hello messages to believe B is still working.
- B.By using EIGRP update messages, with A needing to receive periodic update messages to believe B is still working.
- C.Using a periodic ping of B's IP address based on the EIGRP neighbor timer.
- D.None of the other answers are correct.
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| EIGRP separates the function of monitoring neighbor state into the Hello message process, relying on the receipt of a Hello message. If a router does not receive an EIGRP Hello within the configured EIGRP hold time, the local router believes the neighbor has failed. |
47.
Which of the following affect the calculation of EIGRP metrics when all possible
default values are used? (Choose two answers.)
- A.Bandwidth
- B.Delay
- C.Load
- D.Reliability
- E.MTU
- F.Hop count
- Answer & Explanation
- Report
Answer : [A and B]
Explanation :
Explanation :
| EIGRP uses bandwidth and delay by default. Load and reliability can be added to the mix with configuration, but Cisco recommends against adding these to the metric calculation. |
48.
Which of the following is true about the concept of EIGRP feasible distance?
- A.A route's feasible distance is the calculated metric of a feasible successor route.
- B.A route's feasible distance is the calculated metric of the successor route.
- C.The feasible distance is the metric of a route from a neighboring router's perspective.
- D.The feasible distance is the EIGRP metric associated with each possible route to reach a subnet.
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The feasible distance (FD) is, for all known routes to reach a subnet, the metric for the best of those routes. The best route is called the successor route, and it is added to the IP routing table. |
49.
Which of the following is true about the concept of EIGRP reported distance?
- A.A route's reported distance is the calculated metric of a feasible successor route.
- B.A route's reported distance is the calculated metric of the successor route.
- C.A route's reported distance is the metric of a route from a neighboring router's perspective.
- D.The reported distance is the EIGRP metric associated with each possible route to reach a subnet.
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| A route's reported distance (RD) is the metric used by the neighbor that advertised the route. A router uses it to determine which routes meet the feasibility condition for whether the route can be a feasible successor route. |
50.
Which of the following network commands, following the command router eigrp
1, tells this router to start using EIGRP on interfaces whose IP addresses are 10.1.1.1,
10.1.100.1, and 10.1.120.1? (Choose two answers.)
- A.network 10.0.0.0
- B.network 10.1.1x.0
- C.network 10.0.0.0 0.255.255.255
- D.network 10.0.0.0 255.255.255.0
- Answer & Explanation
- Report
Answer : [A][C]
Explanation :
Explanation :
| The EIGRP network command supports a parameter of a classful network, enabling EIGRP on all interfaces in that classful network or an address and wildcard mask. In the latter case, interface IP addresses that match the configured address, when applying ACL-like logic with the wildcard mask, match the command. |
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