This chapter is from the book
This chapter is from the book
This chapter is from the book
Q&A
As mentioned in the Introduction, you have two choices for review questions: here in the book or the exam questions on the CD-ROM. The answers to these questions appear in Appendix A.
For more practice with exam format questions, use the exam engine on the CD-ROM.
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True or false: You use iBGP to exchange routes between different autonomous systems.
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True or false: BGP Version 4 includes support for CIDR.
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True or false: eBGP and iBGP redistribute automatically on a router if the BGP peers are configured with the same AS number.
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Use _______ to modify the next hop of packets based on source IP address.
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eBGP routes have an administrative distance of ____, and iBGP routes have an administrative distance of ____.
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True or false: IGMP snooping and CGMP are methods to reduce the multicast traffic at Layer 2.
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True or false: PIM has a 32 hop-count limit.
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True or false: PIM-SM routers use the multicast 224.0.0.13 address to request a multicast group to the RP.
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True or false: AS path is the only attribute BGP uses to determine the best path to the destination.
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List three IP routing protocols that use multicast addresses to communicate with their neighbors.
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What IPv6 multicast address does EIGRP use for IPv6?
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Match the IP multicast address with its description:
- 224.0.0.1
- 224.0.0.2
- 224.0.0.5
- 224.0.0.10
- All OSPF routers
- All routers
- EIGRP routers
- All hosts
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Match the BGP attribute with its description:
- Local preference
- MED
- AS path
- Next hop
- IP address
- Indicates the path used to exit the AS
- Tells external BGP peers the preferred path into the AS
- List of AS numbers
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Which Cisco feature can you use instead of local preference to influence the selected path to external BGP routers?
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What is the purpose of route reflectors?
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When BGP confederations are used, which number do external peers see?
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With ___________ all routers peer with each other within the private AS, and with __________ client routers peer only with the reflector.
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Which of the following shows the correct order that BGP uses to select a best path?
- Origin, lowest IP, AS path, weight, local preference, MED
- Weight, local preference, AS path, origin, MED, lowest IP
- Lowest IP, AS path, origin, weight, MED, local preference
- Weight, origin, local preference, AS path, MED, lowest IP
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What feature did BGPv4 implement to provide forwarding of packets based on IP prefixes?
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What route should be used to summarize the following networks?
10.150.80.0/23, 10.150.82.0/24, 10.150.83.0/24, 10.150.84.0/22
- 10.150.80.0/23, 10.150.82.0/23, and 10.150.84.0/22
- 10.150.80.0/22 and 10.150.84/22
- 10.150.80.0/21
- 10.150.80.0/20
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Match the IPv6 multicast address with its description:
- FF02::1
- FF02::2
- FF02::5
- FF02::9
- FF02::A
- OSPFv3 routers
- RIPng routers
- All routers
- EIGRP routers
- All nodes
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Route summarization and redistribution occur in which layer of the hierarchical model?
- Building access
- Distribution
- Core
- Server access
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Which of the following best describes route summarization?
- Grouping contiguous addresses to advertise a large Class A network
- Grouping noncontiguous addresses to advertise a larger network
- Grouping contiguous addresses to advertise a larger network
- Grouping Internet addresses
Refer to Figure 12-17 to answer the following questions.
Figure 12-17 Network Scenario
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Where should you configure BGP?
- Routers A and B
- Routers C and D
- Answers A and B
- Routers A and C
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On which router should you configure redistribution for OSPF and EIGRP?
- Router A only
- Router B only
- Routers A and B
- Redistribution occurs automatically.
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To announce the networks from AS 100 to AS 500, which routing protocols should you redistribute into BGP?
- OSPF only
- EIGRP only
- OSPF and EIGRP
- iBGP
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Where should you use filters?
- Routers A and B
- Routers C and D
- Routers A and C
- Answers A and B
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