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單項(xiàng)選擇題

Assuming that an IP packet is sent from a source address in VLAN1 to a destination address in VLAN2 through a layer-3 switch, which part of the packet will be changed?（）

A. Layer 2 TTL
B. Layer 3 TTL
C. Layer 3 source address
D. Layer 3 destination address

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單項(xiàng)選擇題

On a Cisco Catalyst 4500 Series, the fail LED is lit for one if its two power supplies. Which command would you use to check on this problem ?（）

A. Show module
B. Show errdisable detect
C. Show environment
D. Show diagnostic content

單項(xiàng)選擇題

A Catalyst switch has just been installed and configured, and is not working as expected. You have decided to capture multiple show command outputs to study.
Which one command could you use that includes the output of many other show commands, such as show version and show running-config?（）

A. show configuration
B. show memory
C. show stacks
D. show tech-support

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