第57題： 下列（  ）接口不適用于SSD磁盤。
A. SATA
B. IDE
C. PCle
D. M.2
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第58題： 三層網(wǎng)絡(luò)設(shè)計(jì)方案中，（  ）是核心層的功能。
A.不同區(qū)域的高速數(shù)據(jù)轉(zhuǎn)發(fā)
B.用戶認(rèn)證、計(jì)費(fèi)管理
C.終端用戶接入網(wǎng)絡(luò)
D.實(shí)現(xiàn)網(wǎng)絡(luò)的訪問策略控制
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第59題： 五階段迭代周期模型把網(wǎng)絡(luò)開發(fā)過程分為需求分析、通信規(guī)范分析、邏輯網(wǎng)絡(luò)設(shè)計(jì)、物理網(wǎng)絡(luò)設(shè)計(jì)、安裝和維護(hù)等五個(gè)階段。以下敘述中正確的是（  ）。
A.需求分析階段應(yīng)盡量明確定義用戶需求，輸出需求規(guī)范、通信規(guī)范
B.邏輯網(wǎng)絡(luò)設(shè)計(jì)階段設(shè)計(jì)人員一般更加關(guān)注于網(wǎng)絡(luò)層的連接圖
C.物理網(wǎng)絡(luò)設(shè)計(jì)階段要輸出網(wǎng)絡(luò)物理結(jié)構(gòu)圖、布線方案、IP地址方案等
D.安裝和維護(hù)階段要確定設(shè)備和部件清單、安裝測試計(jì)劃，進(jìn)行安裝調(diào)試
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第61題： 網(wǎng)絡(luò)規(guī)劃與設(shè)計(jì)過程中應(yīng)遵循一些設(shè)計(jì)原則，保證網(wǎng)絡(luò)的先進(jìn)性、可靠性、容錯(cuò)性、安全性和性能等。以下原則中有誤的是（  ）。
A.應(yīng)用最新的技術(shù)，保證網(wǎng)絡(luò)設(shè)計(jì)技術(shù)的先進(jìn)性
B.提供充足的帶寬和先進(jìn)的流量控制及擁塞管理功能
C.采用基于通用標(biāo)準(zhǔn)和技術(shù)的統(tǒng)一網(wǎng)絡(luò)管理平臺(tái)
D.網(wǎng)絡(luò)設(shè)備的選擇應(yīng)考慮具有一定的可擴(kuò)展空間
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第62題： A virtual (  ) network, or VPN, is an encrypted connection over the Internet from a device to a network. The encrypted connection helps ensure that sensitive data is safely (  ). It prevents (  ) people from eavesdropping on the traffic and allows the user to conduct work remotely. Traffic on the virtual network is sent securely by establishing an encrypted connection across the Internet known as a (  ).A remote access VPN securely connects a device outside the corporate office. A site-to-site VPN connects the corporate office to branch offices over the Internet. Site-to-site VPNs are used when distance makes it impractical to have direct network connections between these offices. Think of site-to-site access as (  ) to network.
（1）A. public
B. private
C. personal
D. proper
（2）A. encoded
B. encrypted
C. stored
D. transmitted
（3）A. employed
B. authorized
C. unauthorized
D. criminal
（4）A. channel
B. path
C. tunnel
D. route
（5）A. network
B. device
C. computer
D. endpoin
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