cisco 200 301 exam objectives

cisco 200 301 exam objectives.. Strict: the traceroute can only contain the specified router.. Record: specifies how many hops to reserve space for in the trace packet.. Timestamp: Specifies how much space is reserved in the trace packet for storing time information.. Verbose: This option is automatically selected whenever you select any of the options in this question; it specifies that the entire contents of the trace packet be printed.One important point to note about the traceroute command is that if there are multiple paths to the destination, this command will test each path, which may take longer. As with the extended ping command, it can be executed without a script, and the command and all arguments can be entered on a single command line.The ping command uses ICMP to check for Layer 3 connectivity to the device, while the traceroute command lists each routing device (Layer 3 hop list) passed on the way to the destination device, and is typically used to troubleshoot routing problems. On Windows devices, the command tracert can be used to perform route tracing.16.5.4 Checking Layer 7 ConnectivityThe commands ping and traceroute only check Layer 3 connectivity; if you can reach the target device using either of these commands, Layer 3 and the layers below it are functioning properly. You can use other tools (such as Telnet) to check application layer connectivity. If you can Telnet to the target device, all seven layers of the OSI reference model are functioning properly. For example, if you can Telnet to a device but cannot send e-mail to it, the problem is not with the network, but with the application (the e-mail program is faulty). Of course, it could also be the culprit if the access control list that will be discussed in Chapter 21 is used to filter traffic.Chapter 16 Managing IOS Devices 411The command telnet is used to check Layer 7 (application layer) connectivity. To use Telnet for inspection, the remote target device must have Telnet configured and enabled o If the remote device is an IOS device, the commands login and password must be configured on at least the VTY (see Chapter 10).