單項選擇題

Which of the following should be used to test an internal NIC without having to connect it to thenetwork?（）

A. Loopback cable
B. Crossover cable
C. Rollover cable
D. Straight cable

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單項選擇題

A stateless firewall requires a technician to:（）

A. Write more packet filters.
B. Write less packet filters.
C. Purchase a license for states.
D. Upgrade definitions manually

單項選擇題

How many bits are in an IPv6 address?（）

A.32
B.64
C.128
D.256