單項選擇題

A Cisco router is booting and has just completed the POST process. It is now ready to find and load an IOS image. What function does the router perform next?（）

A.It checks the configuration register.
B.It attempts to boot from a TFTP server.
C.It loads the first image file in flash memory.
D.It inspects the configuration file in NVRAM for boot instructions.

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多項選擇題

What functions do routers perform in a network? (Choose two.)（）

A.packet switching
B.access layer security
C.path selection
D.VLAN membership assignment
E.bridging between LAN segments
F.microsegmentation of broadcast domains

單項選擇題

At which OSI layer is a logical path created between two host systems?（）

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