![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
对于这样几个网段:172.128.12.0,172.128.17.0,172.128.18.0,172.128.19.0,最好用下列哪项网段实现路由汇总?()
A.172.128.0.0/21
B.172.128.17.0/21
C.172.128.12.0/22
D.172.128.20.0/20
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)
A.172.128.0.0/21
B.172.128.17.0/21
C.172.128.12.0/22
D.172.128.20.0/20
第1题
A.172.128.0.0/21
B.172.128.0.0/19
C.172.128.12.0/22
D.172.128.20.0/20
第2题
(34)A. 255. 255. 64.O
B. 255. 255. 128.0
C. 255. 255. 224.0
D. 255. 255. 252.0
第3题
A. 255.255.0.0
B. 255.255.224.0
C. 255.255.24.0
D. 依赖于地址类型
第4题
A.172.25.15.201
B.172.25.16.15
C.172.16.25.16
D.172.25.201.15
第5题
FTP 服务”的是(42) 。
(42)
A. access-list 101 deny tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
B. access-list 101 permit tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
C. access-list 101 deny tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
D. access-list 101 permit tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
第6题
FTP 服务”的是(42) 。
(42)
A. access-list 101 deny tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
B. access-list 101 permit tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
C. access-list 101 deny tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
D. access-list 101 permit tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
第7题
FTP 服务”的是(42) 。
(42)
A. access-list 101 deny tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
B. access-list 101 permit tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
C. access-list 101 deny tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
D. access-list 101 permit tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
第9题
A.access-list 101 deny tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
B.access-list 101 permit tcp 172.168.0.0 0.0.0.255 host 10.1.0.10 eq ftp
C.access-list 101 deny tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
D.access-list 101 permit tcp host 10.1.0.10 172.168.0.0 0.0.0.255 eq ftp
第10题
A、Router(config)#access-list 10 permit 172.16.0.0 0.0.255.255 Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 out
B、Router (config)#access-group 10 permit 172.16.0.0 255.255.0.0 Router(config)#interface s0 Router (config-int-s0)#ip access-list 10 out
C、Router (config)#access-list 10 permit 172.16.0.0 0.0.255.255 Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 in
D、Router (config)#access-list 10 permit 172.16.0.0 .255.255.0.0 ’ Router(config)#interface s0 Router (config-int-s0)#ip access-group 10 in
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