Test CCNA 11

11. For security reasons, the network administrator needs to prevent ping into the corporate networks from hosts outside the internetwork. Which protocol should be blocked with access control lists?

A. IP

B. ICMP

C. TCP

D. UDP

*****************************
*****************************
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
Prev Next

Correct B
Explaination:
Ping packets use the ICMP protocol; therefore ICMP protocal should be blocked witch access control lists.