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單項選擇題

A technician temporarily needs an additional network connection in their office to test a newworkstation. Which of the following is the BEST solution to add a temporary network connection?（）

A. Install a small network switch
B. Use port mirroring on the switch
C. Split the pairs of the existing jack
D. Install a CSU/DSU

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單項選擇題

A network at a small business utilizes a star topology and is experiencing frequent collisionsamong data packets. Which of the following devices is MOST likely being used?（）

A. Unmanaged switch
B. Hardware firewall
C. Hub
D. Managed switch

單項選擇題

Which of the following is the full range of address block 192.16876.0/23?（）

A.192.168.76.0-192.168.77.255
B.192.168.76.0-192.168.76.255
C.192.168.76.0-192.168.76.23
D.192.168.76.0-192.168.780

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