640-821 試験問題を無料オンラインアクセス

Refer to the exhibit. A person is trying to send a file from a host on Network A of the JAX
Company to a server on Network Z of the XYZ Company. The file transfer fails. The host on Network A can communicate with other hosts on Network A.
Which command, issued
from router RTA, would be the most useful for troubleshooting this problem?

• A.show flash:
• B.show history
• C.show controllers serial
• D.show version
• E.show interfaces

DRAG DROP
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正解：

Which of the following commands enables a network administrator to verify the application layer connectivity between source and destination?

• A.telnet
• B.traceroute
• C.verify
• D.ping
• E.trace

DRAG DROP
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正解：

Which OSI layer header contains the address of a destination host that is on another network?

• A.data link
• B.session
• C.application
• D.physical
• E.network
• F.transport