Isaac Farias
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Isaac Farias
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Chapter 20

Pregunta 1 de 8

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1. Which of the following distance vector features prevents routing loops by causing the routing protocol to advertise only a subset of known routes, as opposed to the full routing table, under normal stable conditions?

Selecciona una de las siguientes respuestas posibles:

  • a. Route poisoning

  • b. Dijkstra SPF

  • c. Hello

  • d. Split horizon

Explicación

Pregunta 2 de 8

1

2. Which of the following distance vector features prevents routing loops by advertising an infinite metric route when a route fails?

Selecciona una de las siguientes respuestas posibles:

  • a. Dijkstra SPF

  • b. Hello

  • c. Split horizon

  • d. Route poisoning

Explicación

Pregunta 3 de 8

1

3. Which of the following is true about both RIPv1 and RIPv2? (Choose two answers.)

Selecciona una o más de las siguientes respuestas posibles:

  • a. Uses a hop-count metric

  • b. Sends update messages to multicast address 224.0.0.9

  • c. Supports authentication

  • d. Uses split horizon

Explicación

Pregunta 4 de 8

1

4. Router R1 uses RIPv1, and learns one possible route to reach subnet 10.1.1.0/24. That route would have a metric of 15 from R1’s perspective. Which of the following is true?

Selecciona una de las siguientes respuestas posibles:

  • a. R1 cannot use the route, because metric 15 is considered to be infinity

  • b. R1 will add the route to its routing table

  • c. The cumulative bandwidth between R1 and subnet 10.1.1.0/24 is 15 Mbps

  • d. The slowest bandwidth of the links between R1 and subnet 10.1.1.0/24 is 15 Kbps.

Explicación

Pregunta 5 de 8

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5. 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?

Selecciona una de las siguientes respuestas posibles:

  • 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.

Explicación

Pregunta 6 de 8

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6. Which of the following affect the calculation of EIGRP metrics when all possible default values are used? (Choose two answers.)

Selecciona una o más de las siguientes respuestas posibles:

  • a. Bandwidth

  • b. Delay

  • c. Load

  • d. Reliability

  • e. Hop count

Explicación

Pregunta 7 de 8

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7. Which of the following routing protocols are considered to use link-state logic?

Selecciona una de las siguientes respuestas posibles:

  • a. RIPv1

  • b. RIPv2

  • c. EIGRP

  • d. OSPF

Explicación

Pregunta 8 de 8

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8. Which of the following is true about how a router using a link-state routing protocol chooses the best route to reach a subnet?

Selecciona una de las siguientes respuestas posibles:

  • a. The router finds the best route in the link-state database.

  • b. The router calculates the best route by running the SPF algorithm against the information in the link-state database.

  • c. The router compares the metrics listed for that subnet in the updates received from each neighbor and picks the best (lowest) metric route.

  • d. The router uses the path that has the lowest hop count.

Explicación

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