Which of the following access lists will allow only HTTP traffic into network 196.15.7.0?
Options
A. access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www
B. access-list 10 deny tcp any 196.15.7.0 eq www
C. access-list 100 permit 196.15.7.0 0.0.0.255 eq www
D. access-list 110 permit ip any 196.15.7.0 0.0.0.255
E. access-list 110 permit www 196.15.7.0 0.0.0.255
Correct Answer
access-list 100 permit tcp any 196.15.7.0 0.0.0.255 eq www
Explanation
The first thing to check in a question like this is the access-list number. Right away, you can see that the second option is wrong because it is using a standard IP access-list number. The second thing to check is the protocol. If you are filtering by upper-layer protocol, then you must be using either UDP or TCP; this eliminates the fourth option. The third and last answers have the wrong syntax.
More questions
1. How many collision domains are created when you segment a network with a 12-port switch?
You need 5 subnets, each with at least 16 hosts. The mask 255.255.255.240 provides 16 subnets with 14 hosts-this will not work. The mask 255.255.255.224 provides 8 subnets, each with 30 hosts. This is the best answer.
5. Which command is required for connectivity in a Frame Relay network if Inverse ARP is not operational?
If you have a router in your Frame Relay network that does not support IARP, you must create Frame Relay maps on your router, which provide known DLCI-to-IP address mappings.
6. What VTP mode allows you to change VLAN information on the switch?
A CIDR address of /19 is 255.255.224.0. This is a Class B address, so that is only 3 subnet bits, but it provides 13 host bits, or 8 subnets, each with 8,190 hosts.
8. Which command will allow you to see real-time translations on your router?
Any secondary route to a remote network is considered a feasible successor, and those routes are only found in the topology table and used as backup routes in case of primary route failure. You can see the topology table with the
show ip eigrp topology command.