CCNA Questions And Answers


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239. What command will you use to have your router load an IOS from a tftp host?
A. router(config)# boot system tftp ios-name tftp-address
B. router# boot system tftp ios-name tftp-address C. router(config)# boot system tftp tftp-address ios-name
D. router# boot system tftp tftp-address ios-name
Answer: A

From global configuration you can configure the router to load the IOS from another location.
Chapter: 5


240. What wildcard mask would be used with the following network address?
172.16.16.0 through 172.16.31.0
A. 0.0.31.255
B. 0.0.255.255 C. 0.255.255.255
D. 0.0.0.31
Answer: A

The block size for this network is 32.0 and the wildcard mask is one less than the block size.
Chapter: 5

241. What wildcard mask would you apply to mask the following networks?

172.16.8.0/21 through 172.16.23.255/21 A. 0.0.8.255
B. 0.0.255.255
C. 0.255.255.255 D. 0.0.7.255
Answer: D

The block size for this network is 8.0 (256.0 - 248.0) and the wildcard mask is one less than the block size.
Chapter: 5


242. What command is used to load a Cisco IOS from ROM?

A. router(config)# boot system tftp bootflash B. router# boot system bootflash
C. router(config)# boot system flash bootflash