200-301 sample questions

200-301 sample questions.b. Consider using the (as fast as possible) operations described in ICND1, Chapter 22, "Basic IP Access Control Lists", to find the range of addresses matched by the ACL command: add the address and wildcard mask to find the end of the range of values.c. Note the direction between the packet and the server (sent to the server, sent from the server). When executed by an ACL enabled in a particular direction (inbound or outbound), make sure that the packet has specific values as its source IP address and port, or as its destination IP address and port.d.Remember that if the command needs to check port numbers, then the keywords tcp and udp must be used.e. Note that ICMP packets do not use UDP or TCPO ICMP is considered another protocol that can be matched with the keyword icmp (instead of tcp or udp).f. use an explicit configuration command (instead of using the vague deny any command) to deny all traffic at the end of each ACL. This way the counter for the show command will only increase when there is activity. If you suspect that an ACL is causing a problem, the first step in problem isolation is to find the location and direction of the ACL. The quickest way to accomplish this step is to look at the output of the showrunning-config command, and then look at the ipaccess-group command under each interface.However, in some cases, enabling mode access is not allowed and requires the show command. In this case, another way to find any IPACL interfaces and directions is with the show ip interfaces command, as shown in Example 5-8.Example 5-8 Example of the show ip interface CommandR1>show ip interface sO/O/lSerialO/O/1 is up, line protocol is up Internet addressis 10.1.2.1/24 Broadcast addressis 255.255.255.255 Addressdetermined bysetup command MTU is 1500 bytes Helper address is not set Directed broadcast forwarding isdisabled Multicast reserved groups joined: 224.0.0.9 Outgoing accesslist is not set set Inbound accesslist is 102Inbound accesslist is 102! roughly 26 more lines omitted for brevity