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642-901 Exam
Building Scalable Cisco Internetworks
科目编号：642-901
科目名称：Building Scalable Cisco Internetworks
考题数目：247 Q&As
更新日期：2010-1-27

Exam : Cisco 642-901
Title : BSCI – Building Scaleable Cisco Internetworks

1. Into which two types of areas would an area border router (ABR)

inject a default route? (Choose two.)
A. the autonomous system of a different interior gateway protocol

(IGP)
B. area 0
C. totally stubby
D. NSSA
E. stub
F. the autonomous system of an exterior gateway protocol (EGP)
Answer: CE

2. If no metric is specified for the routes being redistributed into

IS-IS, what metric value is assigned to the routes?
A. 0
B. 1
C. 10
D. 20
Answer: A

3. Which three restrictions apply to OSPF stub areas? (Choose three.)
A. No virtual links are allowed.
B. The area cannot be a backbone area.
C. Redistribution is not allowed unless the packet is changed to a

type 7 packet.
D. The area has no more than 10 routers.
E. No autonomous system border routers are allowed.
F. Interarea routes are suppressed.
Answer: ABE

4. Refer to the exhibit. Which statement is true about the 6.6.6.0/24

prefix?
A. If another path advertises the 6.6.6.0/24 path and has the default

local preference, that path is more preferred.
B. The command neighbor send-community is configured on BGP neighbor

10.10.23.3.
C. The route 10.10.23.3 is not being advertised to other BGP

neighbors.
D. Route 6.6.6.0/24 is learned by an IBGP peer.
Answer: B

5. If a metric is not specified for routes that are redistributed

into OSPF, the default metric that is assigned to the routes is 20,

except for redistributed BGP routes. What is the metric that is

assigned to redistributed BGP routes?
A. 0
B. 1
C. 10
D. 200
Answer: B

6. Refer to the exhibit. Which three statements accurately describe

the result of applying the exhibited route map? (Choose three.)
A. The map prohibits the redistribution of all type 2 external OSPF

routes with tag 6 set.
B. The map prohibits the redistribution of all type 2 external OSPF

routes.
C. The map redistributes into EIGRP all routes that match the pfx

prefix list and the five metric values40000, 1000, 255, 1, and 1500.
D. The map prohibits the redistribution of all external OSPF routes

with tag 6 set.
E. All routes that do no match clauses 10 and 20 of the route map are

redistributed with their tags set to 8.
F. The map permits the redistribution of all type 1 external OSPF

routes.
Answer: AEF

7. Refer to the exhibit. EIGRP has been configured on all routers in

the network. What additional configuration statement should be

included on router R4 to advertise a default route to its neighbors?
A. R4(config)# ip default-network 10.0.0.0
B. R4(config)# ip route 0.0.0.0 0.0.0.0 10.1.1.1
C. R4(config)# ip route 10.0.0.0 255.0.0.0 10.1.1.1
D. R4(config-router)# default-information originate
Answer: A

8. What are the two reasons for the appearance of 0.0.0.0 as the next

hop for a network in the show ip bgp command output? (Choose two.)
A. The network was originated via redistribution of an interior

gateway protocol into BGP.
B. The network was defined by a static route.
C. The network was originated via a network or aggregate command.
D. The network was learned via EBGP.
E. The network was learned via IBGP.
Answer: AC

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