Refer to the exhibit. A network technician enters the following lines into the router.
Tidmore1(config)# interface FastEthernet 0/0 Tidmore1(config-if)# no ip access-group 106 in
Tidmore1(config-if)# interface Serial 0/0 Tidmore1(config-if)# ip access-group 106 inWhat is the
effect of this configuration?
A.
No hosts in the 192.168.254.0 LAN except 192.168.254.7 can access web pages from the
Internet.
B.
Web pages from the Internet cannot be accessed by hosts in the 192.168.254.0 LAN.
C.
The change has no effect on the packets being filtered.
D.
All traffic from the 192.168.254.0 LAN to the Internet is permitted.
Explanation:
Traffic that comes into the router is compared to ACL entries based on the order that the entries
occur in the router. New statements are added to the end of the list. The router continues to look
until it has a match. If no matches are found when the router reaches the end of the list, the traffic
is denied. For this reason, you should have the frequently hit entries at the top of the list. There is
an “implied deny” for traffic that is not permitted. A single-entry ACL with only one “deny” entry has
the effect of denying all traffic. You must have at least one “permit” statement in an ACL or all
traffic is blocked. In this example, since the statement will be added to the end of the access list,
and since there is already an entry that permits all IP traffic, the www traffic will be allowed, all
traffic will never reach this access list entry.