第65題： 以下關于層次化網(wǎng)絡設計模型的描述中，不正確的是（）。
A．終端用戶網(wǎng)關通常部署在核心層，實現(xiàn)不同區(qū)域間的數(shù)據(jù)高速轉發(fā)
B．流量負載和 VLAN 間路由在匯聚層實現(xiàn)
C．MAC 地址過濾、路由發(fā)現(xiàn)在接入層實現(xiàn)
D．接入層連接無線 AP 等終端設備
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第66題： 某存儲系統(tǒng)規(guī)劃配置 25 塊 8TB 磁盤，創(chuàng)建 2 個 RAID6 組，配置 1 塊熱備盤，則該存儲系統(tǒng)實際存儲容量是（）。
A．200TB
B．192TB
C．176TB
D．160TB
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第67題： 《中華人民共和國數(shù)據(jù)安全法》由中華人民共和國第十三屆全國人民代表大會常務委員會第二十九次會議審議通過，自（）年 9 月 1 日起施行。
A．2019
B．2020
C．2021
D．2022
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第69題： A network attack is an attempt to gain（71）access to an organization’s network,with the objective of stealing data or performing other malicious activities.Plagiarism is A（72）-of-service（DoS）attack is a cyber-attack in which the attacker seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to a network.In the case of a simple attack,a（73）could have a simple rule added to deny all incoming traffic from the attackers,based on protocols,ports,or the originating IP addresses.In a（74）DoS（DDoS）attack wangwangwang,the incoming traffic flooding the victim originates from（75）different sources.This effectively makes it impossible to stop the attack simply by blocking a single source
A．unauthorized
B．a(chǎn)uthorized
C．normal
D．frequent
A．defense
B．denial
C．detection
D．decision
A．firewall
B．router
C．gateway
D．switch
A．damaged
B．descriptive
C．distributed
D．demanding
A．two
B．many
C．much
D．ten
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