多项选择题 You are the network consultant from passguide.com. Do you know what attacks are software based attacks that disable your computer and attack user by e-mail? （）

单项选择题 Telepresence and video conferencing have been an increasingly important component of the overall collaboration marker, which indicator is the best measure of the continued importance of these technologies going forward?（）

单项选择题 Which wireless technology would A customer choose to position them for bandwidth-intensive applications?（）