QUESTION: 245

The router ISIS interfaces and peers are as follow. Which of the following statements is true?

IS-IS IPv4 and IS-IS IPv6 are enabled on Eth0/0/1 of R3
The circuit-level of Eth0/0/1 on R3 is Level-1-2
R3 has established a L1 adjacency on GE0/0/0
R3 is the Level-1 DIS and Level-2 DIS for the link where Eth0/0/0 resides

Answer(s): B

As shown in the following figure, R1 can connect to the Internet through R2 or R3. EBGP connections are set up between R1 and R2 and between R1 and R3. R2 and R3 reside in the same AS and advertise default routes using BGP. Which of the following methods can be used to enable traffic from R1 to the Internet to be preferentially forwarded by R2?

On R2, set the Local_Pref value to 150 in the egress direction of R1
On R1, set the MED attribute value to 150 in the ingress direction of R3
On R1, set the Local_Pref attribute value to 150 in the ingress direction of R2
On R2, set the MED attribute value to 150 in the egress direction of R1

Answer(s): C

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QUESTION: 247

In the aggregate ipv4-address {mask | mask-length} [as-set | attribute-policy route-policy-name1 | detail- suppressed | origin-policy route-policy-name2 | suppress-policy route-policy-name3] command, multiple parameters can be used to affect the BGP summarized route and summarization result. Which of the following statements regarding this command are true?

If the origin-policy parameter is specified, only the specific routes matching route-policy are summarized.
If the attribute-policy parameter is specified, attributes of the summary route can be modified.
If the suppress-policy parameter is specified, a summary route is generated. The if-match clause of the route-policy can be used to filter specific routes to be suppressed. The specific routes matching route-policy are still advertised to other BGP peers.
If the as-set parameter is specified, the AS_Path attribute of the summary route contains AS path information about all specific routes to prevent loops.

Answer(s): A,B,D

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QUESTION: 248

To reduce the amount of OSPF data and routing information in some areas, OSPF has special area types. Which of the following statements regarding OSPF special areas is true?

The ASBR-summary-LSA can be advertised to an NSSA
The AS-external-LSA can be advertised to a stub area
Any OSPF area can be configured as a special area
A router in a special area cannot establish an OSPF neighbor relationship with a router in a common area

Answer(s): C

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QUESTION: 248