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单选题
在可变分区存储管理方案中，在对一个分区进行回收时，若该分区的起始地址加长度等于空闲区表中某个登记项所表示空闲区的起始地址，则表示（）
A
该回收分区的上邻分区是空闲的
B
该回收分区的下邻分区是空闲的
C
该回收分区的上、下邻分区都是空闲的
D
该回收分区的上、下邻分区都不是空闲的
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更多 “单选题在可变分区存储管理方案中，在对一个分区进行回收时，若该分区的起始地址加长度等于空闲区表中某个登记项所表示空闲区的起始地址，则表示（）A 该回收分区的上邻分区是空闲的B 该回收分区的下邻分区是空闲的C 该回收分区的上、下邻分区都是空闲的D 该回收分区的上、下邻分区都不是空闲的” 相关考题
考题
单选题下面的选项中显示系统硬件和软件版本信息的命令是（）。A
showconfigurationsB
showenvironmentC
showversionsD
showplatform
考题
单选题以下关于网桥和交换机的区别的叙述中，正确的是（）A
交换机主要是基于软件实现，而网桥是基于硬件实现的B
交换机定义了广播域，而网桥定义了冲突域C
交换机根据IP地质转发，而网桥根据MAC地址转发D
交换机比网桥的端口多，转发速度速度更快
考题
单选题按照域名系统的定义，域名www.sales.microsoft.com包含4个标识符，其中（1）是顶级域名，（2）是注册给组织或个人的二级域名。空白（1）处应选择（）A
WWWB
salesC
microsoftD
com
考题
单选题VPN实现网络安全的主要措施是（7），L2TP与PPTP是VPN的两种代表性协议，其区别之一是（8）。空白处（8）应选择（）A
L2TP只适于IP网，传输PPP帧；PPTP既适于IP网，也适于非IP网，传输以太帧B
L2TP只适于IP网，传输以太帧；PPTP既适于IP网，也适于非IP网，传输PPP帧C
都传输PPP帧，但PPTP只适于IP网，L2TP既适于IP网，也适于非IP网D
都传输以太帧，但PPTP只适于IP网，L2TP既适于IP网，也适于非IP网
考题
单选题在网络中分配IP地址可以采用静态地址或动态地址方案。下面关于两种地址分配方案的论述中错误的是（）。A
采用动态地址分配方案可便面地址资源的浪费B
路由器、交换机等联网设备适合采用静态IP地址C
各种服务器设备适合采用动态IP地址分配方案D
学生客户机最好采用动态IP地址
考题
单选题在抑制计时器的时间内，路由器会如何行动？（）A
路由器将不接受一切路由更新B
路由器仅仅不接受对相应的毒化路由的一切更新C
路由器不接受相对应的毒化路由的更新，除非更新来自于原始通告这条路由的路由器D
路由器不接受对相应的毒化路由的更新。除非一样的路由信息被多次收到
考题
单选题Astute service providers realize that the continued support of legacy X.25 and asynchronous network element using separate operations network is cost(16).For example,the maintenance of multiple networks can require additional staff. Often, this staff must be trained on multiple vendor technologies, sometimes requiring parallel groups specializing in each (17) .Hence, additional maintenance procedures must be maintained and administrative records are (18) .The duplication of transport facilities to carry (19)network traffic is an inefficient use of resources. And not surprisingly, more technologies installed in a central office means the necessity for more physical space, and an increase in power connections and power consumption migration of these (20) network elements to IP-based DCns is alogical strategy.
空白处（17）应选择（）A
lineB
platformC
severD
switch
考题
单选题WLANs are increasingly popular because they enable cost-effective connections among people, applications and data that were not possible, or not cost-effective, in the past. For example, WLAN-based applications can enable fine-grained management of supply and distribution (1) to improve their efficienty and reduce (2) .WLANs can also enable entirely new business processes. To cite but one example, hospitals are using WLAN-enabled point-of-care applications to reduce errors and improve overall (3) care. WLAN management solutions provide a variety of other benefits that can be substantial but difficult to measure. For example, they can protect corporate data by preventing (4) through rogue access points. They help control salary costs, by allowing IT staffs to manage larger networks without adding staff. And they can improve overall network mananement by integrating with customers' existing systems, such as OpenView and UniCenter. Fortunately, it isn't necessary to measure these benefits to justify investing in WLAN management solutions, which can quickly pay for themselves simply by minimizing time-consuming(5) and administrative chores.
空白处（2）应选择（）A
personelB
expensesC
overheadD
hardware
考题
单选题下列关于网络攻击的说法中，错误的是（）。A
钓鱼网站通过窃取用户的账号、密码来进行网络攻击B
向多个邮箱群发同一封电子邮件是一种网络攻击行为C
采用DoS攻击使计算机或网络无法提供正常的服务D
利用Sniffer可以发起网络监听攻击
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