第58題： 定級備案為等級保護第三級的信息系統(tǒng)，應(yīng)當(dāng)每( )對系統(tǒng)進行一次等級測評。
A.半年
B.一年
C.兩年
D.三年
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第59題： 以下措施中，不能加強信息系統(tǒng)身份認(rèn)證安全的是( )。
A.信息系統(tǒng)采用 https 訪問
B.雙因子認(rèn)證
C.設(shè)置登錄密碼復(fù)雜度要求
D.設(shè)置登錄密碼有效期
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第60題： ( )存儲方式常使用NFS協(xié)議為Linux操作系統(tǒng)提供文件共享服務(wù)。
A.DAS
B.NAS
C.IP-SAN
D.FC-SAN
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第62題： 在結(jié)構(gòu)化布線系統(tǒng)設(shè)計時，配線間到工作區(qū)信息插座的雙絞線最大不超過90米，信息插座到終端電腦網(wǎng)卡的雙絞線最大不超過( )米。
A.90
B.60
C.30
D.10
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第63題： 下列關(guān)于項目收尾的說法中錯誤的是( )。
A.項目收尾應(yīng)收到客戶或買方的正式驗收確認(rèn)文件
B.項目收尾包括管理收尾和技術(shù)收尾
C.項目收尾應(yīng)向客戶或買方交付最終產(chǎn)品、項目成果、竣工文檔等
D.合同種植是項目收尾得一種特殊情況
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第64題：

Network Addres Translation(NAT) is an Internet standard that enbles a local-area network to use one set of IP addresses for internet traffic and another set of ( ) IP addresses for external traffic. The main use of NAT is to limit the number of public IP addresses that an organization or company must use, for both economy and ( ) purposes. NAT remaps an IP address space into another by modifying network address information in the ( ) header of packets while they are in transit across a traffic routing device. It has become an essential tool in conserving global address space in the face of ( ) address exhaustion. When a packet traverses outside the local network, NAT converts the private IP address to a public IP address. If NAT runs out of public addresses，the packets will be dropped and ( )"host unreachable"packets will be sent.
(1) A. local
B. private
C. public
D. dynamic
(2) A. political
B. fairness
C. efficiency
D. security
(3) A.MAC
B. IP
C.TCP
D. UDP
(4) A. IPv4
B. IPv6
C. MAC
D. logical
(5) A. BGP
B. IGMP
C. ICMP
D. SNMP

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