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助理工程师
 
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300-101 北京 960通过,选择全覆盖,没有17题,拖图题第是12题,实验题还是5题,ospf case ,ospf stub,ospf v3.route-map,redistribute.
) U5 O4 B/ m& N6 fQUESTION 406 @: z1 v8 h( [) Z. S
What does the following access list, which is applied on the external interface FastEthernet 1/0 of the
* z: p S/ \5 I! |5 yperimeter router, accomplish?' ^9 ] N8 k- O9 U
router(config)#access-list 101 deny ip 10.0.0.0 0.255.255.255 any log% j+ c- N" K0 {6 T& {5 V3 d5 a- z
router (config)#access-list 101 deny ip 192.168.0.0 0.0.255.255 any log
7 ^9 b9 o! y1 u; \router (config)#access-list 101 deny ip 172.16.0.0 0.15.255.255 any log9 ]) t; \: T8 {1 Q+ A9 s L
router (config)#access-list 101 permit ip any any' W% s; d$ [) E
router (config)#interface fastEthernet 1/03 y& v9 D) U3 q% `
router (config-if)#ip access-group 101 in
: Q" j+ y1 T( z' C8 ZA. It prevents incoming traffic from IP address ranges 10.0.0.0-10.0.0.255, 172.16.0.0-172.31.255.255, 192.168.0.0-192.168.255.255 and logs any intrusion attempts.. G/ w7 u6 T+ d3 Y
B. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet+ R! c* l s$ C0 P3 L. O8 @
C. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts.
& W8 n! l! N! d3 d- w7 h& QD. It prevents private internal addresses to be accessed directly from outside.8 O* V. g# Z) n3 f
Correct Answer: C" v' }5 U' u# o4 M2 @3 t( s) Y4 q7 ~
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我在背这题时候直接记关键字filter(答案C),但是考试的时候有两个选项里面都有filters,希望同考的人留心 " o( ?7 p" E9 T
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