思科考试是随报随考，在复习的过程中中还是不够全面，为了帮助广大考生系统全面的复习好《思科认证：CCNA认证学科》，我们考吧网整理了思科认证模拟试题，本次汇编的模拟试题希望对你的考试有所帮助，预祝你考试顺利。

1. which type of switching is considered to be ’wire speed?’

a.) inverted b.) layer 4 c.) cut-through d.) multiplexed e.) layer 3 f.) store and forward

2. which command will copy the routers configuration script from ram to nvram?

a.) copy running-config startup-config b.) nvram is read-only, so this is not possible. c.) save ram nvram d.) save ram e.) copy all

f

3. which of the following are valid host id’s for 157.89.9.50 /28 (12 bits of subnetting)?

a.) 157.89.9.49 - 157.89.9.64 b.) 157.89.0.0 - 157.89.255.255 c.) 157.89.9.0 - 157.89.9.255 d.) 157.89.9.32 - 157.89.9.63 e.) 157.89.9.49 - 157.89.9.62

e below is a very easy to use shortcut that requires no binary math: figure out the mask: /28 = 255.255.255.240 figure out the subnet multiple: 256-240=16 subnets are 16,32,48,64,80, etc this is subnet 48, next subnet is 64, so the broadcast address is 63! everything between the subnet (48) and broadcast (63) are the valid hosts. in this example, based on the given mask, the valid host ranges are 49-62.

4. which command will start the process for creating a cisco ios file image backup to a network file server?

a.) copy ios tftp b.) copy ios network c.) copy tftp flash d.) copy flash tftp e.) copy ios flash

d the ios is stored in flash. the command format is: copy 学生大 [destination]

编辑推荐：

思科认证：CCNA认证考前精选模拟试题汇总三

思科认证：CCNA认证考前精选模拟试题汇总四