Authentication for user data traffic is important, but so is authentication for IP voice traffic. The Cisco 830 802.1 feature provides an easier method for allowing IP voice traffic through the VPN, because it（）. requires access lists to identify the voice traffic 。 can allow traffic from a device without 802.1X authentication, by MAC address。 can allow traffic from Cisco IP phones by listening to their CDP advertisements。 allows all packets marked with a ToS of 5 to bypass authentication。 allows all IP voice packets to bypass authentication via stateful inspectio。
以下哪个是ETL的实现方式（） 储存过程。 数据转换。 元数据服务。 全文目录。
Which of the following steps is incorrect in the following sequence of enabling the ARCHIVELOG mode of a database？（） Shut down the database.。 Set the appropriate parameters in init.ora file.。 Start the database in NOMOUNT state.。 Issue the ALTER DATABASE ARCHIVELOG command.。 Open the database.。 Take a full closed backup.。
What are two important considerations when using 2- or 4-channel 15216 OADMs？（） All "Add" channels require uniform power levels.。 The flexibility of wavelengths per OADM is limited.。 It is easier to balance "Pass-Through" and "Add" channels.。 There is lower pass-through loss using multi-channel OADMs.。 You can extract a single channel without dropping other channels.。
某患者，女性，55岁。右侧乳房外上象限无痛性肿块。质地较硬，与周围组织分界不清，不易推动，表面有“橘皮样”改变，右侧腋窝可触及多个散在肿大的淋巴结。该患者做哪种检查可确定诊断（） CT。 B超。 核素检查。 X线造影。 病理检查。
儿童多动症最主要的临床表现是（）
