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

Which of the following technologies was designed to provide the FASTEST data rates over analog phone lines?（）

A.RADSL
B.SONET
C.ADSL
D.MPLS

你可能感興趣的試題

單項(xiàng)選擇題

Which of the following protocols defaults to port 161?（）

A.SFTP
B.SNMP
C.SMTP
D.SNTP

單項(xiàng)選擇題

Which of the following monitors a server to see which protocols might be in use?（）

A. Ping sweep
B. Intrusion detection software
C. Port scanner
D. Wireless packet sniffer