ccna 200 301 practice questions

ccna 200 301 practice questions.There are two types of group strings in SNMP version 2c.Read-only (RO): provides access to MIB variables, but does not allow them to be changed, only read. Because security is weak in version 2c, many organizations use SNMP only in read-only mode.Read-Write (RW): Provides read and write access to all objects in the MIB. Tip: SNMP security was not really available until version 3. This version will be described in a later section.Configuring SNMP version 2c on a Cisco router or switch requires only one configuration command: the snmp-server community global command. However, most SNMP configurations also contain some optional setting items. The following configuration checklist gives the steps for these. Common(required) Use the snmp-servercommunitystringRO|RW global command to configure the group string and access level (read-only orStep 2 read-write).Step 3 (Optional) Use the snmp-server location text-describing-location global configuration command to archive this device location.Step 4 Archive.(Optional) Use the snmp-server contact contact-name global configuration command to archive this device location.(Optional) Use the snmp-server communitystringacl-name-or-number global configuration command to define and reference ACLs to restrict SNMP access to NMS hosts strictly based on access control lists (ACLs). Example 19-2 uses that required command from the above list and other optional commands. It uses a hard-to-guess group string to allow access only from the NMS at address 10.10.10.101, and also defines the location and contact of that device (router R1)