单选题On a newly installed router, the following access list is added to the HSSI interface for incoming traffic:Access-list 101 permit tcp any 10.18.10.0 0.0.0.255 eq tcp What is the effect of the "any" keyword in the above access list?（）A check any of the

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单选题

On a newly installed router, the following access list is added to the HSSI interface for incoming traffic:Access-list 101 permit tcp any 10.18.10.0 0.0.0.255 eq tcp What is the effect of the "any" keyword in the above access list?（）

check any of the bits in the source address

permit any wildcard mask for the address

accept any source address

check any bit in the destination address

permit 255.255.255.255 0.0.0.0

accept any destination

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相似问题和答案

第1题：

用标准访问控制列表配置212.33.127.0/24子网主机登录到路由表，虚拟的配置是

A．Router(config)#access-list 10 permit 212.33.127.0 255.255.255.0 Router(config)#line vty 0 5 Router(config-line)#access-class 10 in

B．Router(config)#access-list 20 permit 212.33.127.0 0.0.0.255 Router(config)#line vty 0 5 Router(config-line)#access-class 20 in

C．Router(config)#access-list 99 permit 212.33.127.0 0.0.0.255 Router(config)#line vty 0 5 Router(config-line)#access-class 99 in

D．Router(config)#access-list 100 permit 212.33.127.0 0.0.0.255 Router(config)#line vty 0 5 Router(config-line)#access-class 100 in

正确答案：D

第2题：

封禁ICMP协议，只转发212.78.170.166/27所在子网的所有站点的ICMP数据包，正确的access-list配置是______。

A) Router(config)#access-list 110 permit icmp 212.78.170.166 0.0.0.0 any

Router(config)#access-list 110 deny icmp any any

Router(config)#access-list 110 permit ip any any

B) Router(config)#access-list 110 permit icmp 212.78.170.0 255.255.255.224 any

Router(config)#access-list 110 permit ip any any

Router(config)#access-list 110 deny icmp any any

C) Router(config)#access-list 110 perimt iemp 212.78.170.0 0.0.0.255 any

Router(config)#access-list 110 deny icmp any any

Router(config)#access-list 110 permit ip any any

D) Router(config)#access-list 110 permit icmp 212.78.170.160 0.0.0.31 any

Router(config)#access-list 110 deny icmp any any

Router(config)#access-list 110 permit ip any any

A．

B．

C．

D．

正确答案：D

第3题：

拒绝转发所有IP地址进与出方向的、端口号为1434的UDP和端口号为4444的TCP数据包，下列正确的access-list配置是

A）Router (config)#access-list 30 deny udp any any eq 1434

Router (config)#access-list 30 deny tcp any any eq 4444

Router (config)#access-list 30 permit ip any any

B）Router (config)#access-list 130 deny udp any any eq 1434

Router (config)#access-list 130 deny tcp any any eq 4444

Router (config)#access-list 130 permit ip any any

C）Router (config)#access-list 110 deny any any udp eq 1434

Router (config)#access-list 110 deny any any tcp eq 4444

Router (config)#access-list 110 permit ip any any

D）Router (config)#access-list 150 deny udp ep 1434 any any

Router (config)#access-list 150 deny tcp ep 4444 any any

Router (config)#access-list 150 permit ip any any

正确答案：A
A
解析：标准控制列表命令格式如下：
Router(config)#access-list access-list-number {permit or deny} protocol soure {soure-wildcard} log
注：access-list-number是访问控制列表号。permit是语句匹配时允许通过，deny是语句不匹配时，拒绝通过。soure是源IP地址，protocol 是值得数据包遵守的协议，也就是数据类型。soure-wildcard是通配符，log是可选项，生成有关分组匹配情况的日志消息，发到控制台。
题中
拒绝转发所有IP地址进与出方向的、端口号为1434的UDP数据包: deny udp any any eq 1434
拒绝转发所有IP地址进与出方向的、端口号为4444的TCP数据包: deny tcp any any eq 4444
允许其他端口和其他类型的数据包：permit ip any any

第4题：

Which command is required to apply an access list on a virtual terminal line of a router?()

A. Router(config-line)# access-class 10 in

B. Router(config-if)# ip access-class 23 out

C. Router(config-line)# access-group 15 out

D. Router(config-if)# ip access-group 110 in

E. Router(config-line)# access-list 150 in

F. Router(config-if)# ip access-list 128 out

参考答案：A

第5题：

Look at the following configuration below and select the statements that are true.（）RD2(config)router ospf 100RD2(config - router) distance 180 10.1.10.1 0.0.0.0 match - meRD2(config -router)!RD2(config - router) ip access - list standard match - meRD2(config - std - nacl) permit host 172.16.0.0

A. OSPF will have an AD of 180 for routes from 10.1.10.1 in the 172.16.0.0/16 range.

B. The neighbor RID is 10.1.10.1

C. OSPF will have an AD of 180 for all routes.

D. The local RID is 10.1.10.1

参考答案：A, B

第6题：

用标准访问控制列表配置只允许212.33.127.0/24子网主机登录到路由表，正确的配置是______。

A．Router(config) #access-list 10 permit 212.33.127.0 255.255.255.0 Router(config) #line vty 0 5 Router(config-line) #access-class 10 in

B．Router(config) #access-list 20 permit 212.33.127.0 0.0.0.255 Router(config) #line vty 0 5 Router(config-line) #access-class 20 out

C．Router(config) #access-list 99 permit 212.33.127.0 0.0.0.255 Router(config) #line vty 0 5 Router(config-line) #access-class 99 in

D．Router(config) #access-list 100 permit 212.33.127.0 0.0.0.255 Router(config) #line vty 0 5 Router(config-line) #access-class 100 in

正确答案：C
解析：表号1～99用于标准访问控制列表，扩展访问控制列表的表号范围为100～199和2000～2699，D项不符合，并且通配符用32位二进制数表示，表示形式与IP地址和子网掩码相同，实际上就是子网掩码的反码，212.33.127.0/24的子网掩码为255.255.255.0，反码为0.0.0.255。因此选C。

第7题：

Cisco路由器执行show access-list命令显示如下一组控制列表信息：

Standard IP acceSS list 30

deny 127.0.0.0，wildcard bits 0.255.255.255

deny 172.16.0.0，wiidcard bits 0.15.255.255

permft any

根据上述信息，正确的access-list配置是______。

A) Router(config)#access-list 30 deny 127.0.0.0 255.255.255.0

Router(config)#access-list 30 deny 172.16.0.0 255.240.0.0

Router(config)#access-list 30 permit any

B) Router(config-std-nacl)#access-list 30 deny 127.0.0.0 0.255.255.255

Router(config-std-nael)#access-list 30 deny 172.16.0.0 0.15.255.255

Router(config-std-nacl)#access-list 30 permit any

C) Router(config)#access-list 30 deny 127.0.0.0 0.255.255.255

Router(config)#access-list 30 deny 172.16.0.0 0.15.255.255

Router(config)#access-list 30 permit any

D) Router(config)#access-list 30 deny 127.0.0.0 0.255.255.255

Router(config)#access-list 30 permit any

Router(config)#access-list 30 deny 172.16.0.0 0.15.255.255

A．

B．

C．

D．

正确答案：C

第8题：

Cisco路由器执行show access-list命令显示如下一组信息 Standard IP access list block deny 10.0.0.0, wildcardbits 0.255.255.255 log deny 172.16.0.0, wildcard bits 0.15.255.255 permit any 根据上述信息，正确的access-list配置是

A．Router (config) #access-list standard block Router (config-std-nacl) #deny 10.0.0.0 255.0.0.0 log Router (config-std-nacl) #deny 172.16.0.0 255.240.0.0 Router (config-std-nacl) #permit any

B．Router (config) #ip access-list standard block Router (config-std-nacl) #permit any Router (config-std-nacl) #deny 10.0.0.0 0.255.255.255 log Router (config-std-nacl) #deny 172.16.0.0 0.15.255.255

C．Router (config) #ip access-list standard block Router (config-std-nacl) #deny 10.0.0.0 255.0.0.0 log Router (config-std-nacl) #deny 172.16.0.0 255.240.0.0 Router (config-std-nacl) #permit any

D．Router (config) #ip access-list standard block Router (config-std-nacl) #deny 10.0.0.0 0.255.255.255 log Router (config-std-nacl) #deny 172.16.0.0 0.15.255.255 Router (config-std-nacl) #permit any

正确答案：D

第9题：

Refer to the exhibits. Router B should advertise the network co nnected to the E0/0/0 interface to router A and block all other network advertisements. The IP routing table on router A indicates that it is not receiving this prefix from router B. What is the probable cause of the problem?（）

A. An access list on router B is causing the 192.168.3.16/28 network to be denied

B. An access list on router B is causing the 192.168.3.32/28 network to be denied

C. The distribute list on router B is referencing a numbered access list that does not exist on router B

D. The d istribute list on router B is referencing the wrong interface

参考答案：A

第10题：

On a newly installed router, the following access list is added to the HSSI interface for incoming traffic:Access-list 101 permit tcp any 10.18.10.0 0.0.0.255 eq tcpWhat is the effect of the "any" keyword in the above access list?（）

A. check any of the bits in the source address

B. permit any wildcard mask for the address

C. accept any source address

D. check any bit in the destination address

E. permit 255.255.255.255 0.0.0.0

F. accept any destination

参考答案：C

On a newly installed router, the following access list is ad

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