日韩欧美亚洲 _ 欧美亚洲一区 _ 日本亚洲欧美 _ 亚洲精品欧美国产白袜脚足J棉袜在线观看_亚洲熟妇av一区二区三区_久久天天躁狠狠躁夜_精品众筹模特私拍在线

單項(xiàng)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

你可能感興趣的試題

單項(xiàng)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

單項(xiàng)選擇題

Which of the following improves wireless performance by allowing only one wireless transmissionon the network at a time?（）

A. CSMA/CA
B. CSMA/CD
C. Wireless encryption
D. Wireless bonding