第1題： Computer Network (1)(CND) refers to the strategies and efforts undertaken to secure data and information within a computer network.It involves implementing security measures and conducting security awareness and training programs to protect against potential(2).Many different cyber plagiarize is security solutions can contribute to your organization's CND DOG including(3),VPNs,access control systems,and more. CND involves protection, detection, and reaction.(4)provides a foundation for the program. It is the base of operation, from the base,and detected incidents,the(5)includes taking immediate steps to stop an incident in progress.
（1）A．Description
B．Defection
C．Detection
D．Defense
（2）A．Actions
B．Access
C．Operations
D．Attacks
（3）A．Firewalls
B．Gateways
C．Routers
D．Switches
（4）A．Defense
B．Protection
C．Reaction
D．Detection
（5）A．Attack
B．Protection
C．Detection
D．Reaction
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第2題：

某廣播型網(wǎng)絡的拓撲如下圖所示，所有路由器均運行OSPF路由協(xié)議，R1和R2的接口優(yōu)先級為0，R3的接口優(yōu)先級為100、R4的接口優(yōu)先級為101，則路由器()會被選舉為DR路由器，R1和R2的OSPF鄰居狀態(tài)為()。

（6）A．R2
B．R3
C．R4
D．R1
（7）A．2-Way
B．Full
C．Init
D．Exstart
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第4題： IPv4地址10.10.216.18/20的網(wǎng)絡地址是()。
A．10.10.216.0
B．10.10.210.0
C．10.10.210.32
D．10.10.208.0
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第5題： 把一部分磁盤空間充當內存使用，避免執(zhí)行的程序很大或很多導致內存消耗殆盡，該技術被稱為()。
A．虛擬內存
B．動態(tài)存儲
C．分級存儲
D．高速緩存
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第6題： RSA加密算法的安全性依賴于()問題的困難性。
A．大整數(shù)分解
B．子集合
C．合數(shù)剩余判定
D．離散對數(shù)
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