Transcript ReverseJeopardy_2_1

CCNA2
REVERSE
JEOPARDY
Chapter 1
SW
Start-up
Routing
table
Router
parts
Choosing
a path
Addressing
Pot luck
►►► Final Jeopardy ◄◄◄
100
100
100
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100
200
200
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200
200
200
300
300
300
300
300
300
400
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400
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400
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500
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500
500
SW
100 Start-up
• What does a router do immediately after
running its POST?
• Loads and runs its bootstrap program
SW
200 Start-up
• Where does a router store its POST
instructions and bootstrap program ?
• In ROM
SW
300 Start-up
• What is the main task of the bootstrap
program ?
• Locate the IOS and load it into RAM
SW
400 Start-up
• After loading its IOS, what other file does
a router normally try to locate and load ?
• The startup configuration
SW
500 Start-up
• What are the two places where a router
will look for its IOS ?
• Flash memory and on a TFTP server
SW
100 Routing table
• Where does a router store its routing
table ?
• In RAM
SW
200 Routing table
• How does a static route get into the
routing table ?
• Configured by an administrator
SW
300 Routing table
• How does a directly connected route get
into the routing table ?
• From the router’s own interface
configuration
SW
400 Routing table
• How does a dynamic route get into the
routing table ?
• Learned from another router
SW
500 Routing table
• Which command will show the routing
table ?
• Show ip route
SW
100 Router parts
• Where does a router store its IOS in the
long term ?
• Flash memory
SW
200 Router parts
• Where does a router store its startup
configuration ?
• In NVRAM
SW
300 Router parts
• Which router interface is used for initial
configuration of the router ?
• Console port
SW
400 Router parts
• What is the purpose of the router’s AUX
interface ?
• It is used for configuration, often via a
modem
SW
500 Router parts
• Name three items that a router stores in
its ROM ?
• POST instructions. Bootstrap program.
Basic IOS for emergency use
SW
100 Choosing a path
• Which routing metric is used by the RIP
routing protocol ?
• Hop count
SW
200 Choosing a path
• What does the OSPF routing protocol
use to calculate its routing metric ?
• The bandwidth of the links
SW
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
SW
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.
SW
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
SW
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
SW
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 fa0/0
ip address 192.168.1.254 255.255.255.0
SW
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
SW
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
SW
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.
SW
100 Pot Luck
• Which mode is a router in when you first
make a console connection with it ?
• User exec mode
SW
200 Pot Luck
• Which router mode do you go to by
typing the enable command ?
• Privileged exec mode
SW
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
SW
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
SW
500 Pot Luck
• Which router command saves the
current configuration into NVRAM ?
• Copy running-config startup-config (copy
run start
SW
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
SW