WhatarethreebenefitsofusingIPv6?（）
A. IPv6supportsagreaterlevelofsecuritybyintegratingfeaturesthatwereoptionaladd-onsinIPv4.
B. IPv6reducesadministrativeoverheadusingstatelessaddressautoconfigurationforhosts.
C. IPv6eliminatestheneedforprivatetopublicNATusingalargeaddresspool.
D. IPv6providesbackwardcompatibilitywithIPv4usingtheNextHeaderfield.
E. IPv6representslargeIPaddressesusingdotteddecimalnotation.
在对单个总体的参数值做检验时，小样本量用（）。
A. t检验
B. z检验
C. p检验
D. 相关分析
狭义的刑法仅指（）。
A. 刑法典
B. 单行的刑事法律
C. 其他法律中有关的个别条文
D. 自治条例
Whichtwostatementsaccuratelydescribeabroadcastdomain?（）
A. Broadcastdomainsconsistofdevicesthatconnecttoacommonswitchorhub.
BroadcastdomainsconsistofagroupofdevicesthatcanbereachedbysendingaframeaddressedtotheLayer2broadcastaddress.
C. Broadcastdomainsrequireagatewaydevicesuchasarouter.
D. Broadcastdomainsconsistofdevicesthatresideonthesamesub-network.
微信支付 
支付宝支付