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REVERSE JEOPARDY

Chapter 1

CCNA2

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Start-upStart-upRouting Routing

tabletableRouter Router

partspartsChoosing Choosing

a patha pathAddressingAddressing Pot luckPot luck

100 100 100 100 100 100

200 200 200 200 200 200

300 300 300 300 300 300

400 400 400 400 400 400

500 500 500 500 500 500

► ► ► F i n a l J e o p a r d y ◄ ◄ ◄

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100 Start-up

• What does a router do immediately after running its POST?

• Loads and runs its bootstrap program

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200 Start-up

• Where does a router store its POST instructions and bootstrap program ?

• In ROM

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300 Start-up

• What is the main task of the bootstrap program ?

• Locate the IOS and load it into RAM

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400 Start-up

• After loading its IOS, what other file does a router normally try to locate and load ?

• The startup configuration

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500 Start-up

• What are the two places where a router will look for its IOS ?

• Flash memory and on a TFTP server

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100 Routing table

• Where does a router store its routing table ?

• In RAM

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200 Routing table

• How does a static route get into the routing table ?

• Configured by an administrator

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300 Routing table

• How does a directly connected route get into the routing table ?

• From the router’s own interface configuration

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400 Routing table

• How does a dynamic route get into the routing table ?

• Learned from another router

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500 Routing table

• Which command will show the routing table ?

• Show ip route

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100 Router parts

• Where does a router store its IOS in the long term ?

• Flash memory

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200 Router parts

• Where does a router store its startup configuration ?

• In NVRAM

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300 Router parts

• Which router interface is used for initial configuration of the router ?

• Console port

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400 Router parts

• What is the purpose of the router’s AUX interface ?

• It is used for configuration, often via a modem

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500 Router parts

• Name three items that a router stores in its ROM ?

• POST instructions. Bootstrap program. Basic IOS for emergency use

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100 Choosing a path

• Which routing metric is used by the RIP routing protocol ?

• Hop count

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200 Choosing a path

• What does the OSPF routing protocol use to calculate its routing metric ?

• The bandwidth of the links

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300 Choosing a path

• If a routing protocol finds more than one path to a destination, which path goes into the routing table ?

• The path with the lowest metric

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400 Choosing a path

• What is equal cost load balancing ?

• If a routing protocol finds two different paths with the same cost then they can both be used.

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500 Choosing a path

• What is the disadvantage of using hop count as the only metric?

• The path with the fewest hops may not be the most efficient path. There may be a path with more hops but having links with higher bandwidth

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100 Addressing

• Which layer 2 destination address will a PC put in a frame when it encapsulates a packet for a remote network ?

• The layer 2 address of the default gateway

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200 Addressing

• How do you configure the IP address 192.168.1.254/24 on to the Fa0/0 port of a router starting at Global configuration mode ?

• Interface fa0/0ip address 192.168.1.254 255.255.255.0

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300 Addressing

• Which addresses stay the same and which addresses change as packets move across networks ?

• IP addresses stay the same (leaving out the effects of NAT). Layer 2 addresses change for each hop

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400 Addressing

• Ethernet frames include full layer 2 destination and source MAC addresses. Why do HDLC and PPP frames not include full layer 2 addressing ?

• HDLC and PPP are used on WAN point to point links where there is only one possible destination

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500 Addressing

• How does a PC know whether to put the destination host’s MAC address or the default gateway’s MAC address in a frame ?

• It does a logical AND on its own IP address and subnet mask to find its own network address. It does a logical AND on the destination IP address and its subnet mask. If the result is the same then the destination host is on the same network and the frame should be addressed directly to the destination host.

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100 Pot Luck

• Which mode is a router in when you first make a console connection with it ?

• User exec mode

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200 Pot Luck

• Which router mode do you go to by typing the enable command ?

• Privileged exec mode

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300 Pot Luck

• What is the purpose of the description command that you enter when configuring an interface ?

• It is for documentation, to describe the purpose and features of the interface. It does not affect router operation

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400 Pot Luck

• When you first configure an interface, what command do you have to give in addition to the ip address command ?

• No shutdown

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500 Pot Luck

• Which router command saves the current configuration into NVRAM ?

• Copy running-config startup-config (copy run start

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Final Jeopardy

• Two different routing protocols are running. They find different routes to the same network. Which routing protocol will get its route put into the routing table ?

• The one with the lower administrative distance