Cisco Certified Network Associate (CCNA) Practice Exam

What is the first step in configuring an extended numbered ACL?

1. (config)#access-list ACL NUMBER remark ACL DESCRIPTION

2. (config)#ip access-list extended ACL NUMBER

3. (config)#access-list ACL NUMBER

4. (config)#acl extended ACL NUMBER

The correct answer is: (config)#access-list ACL NUMBER remark ACL DESCRIPTION

The correct first step in configuring an extended numbered ACL is to begin with the command which establishes the access list and provides a description. This is crucial as it helps in managing and understanding the ACLs, especially in complex network environments where multiple access lists are configured. When using this command, you're not only creating the ACL but also providing a meaningful context through the remark, which enhances network documentation and clarity. This step is important because it sets the stage for the subsequent permit or deny statements that will be added to the access list, making it easier for network administrators to remember the purpose of specific rules later on. The other options represent different commands used in the configuration of access control lists, but they do not serve as the first step when creating an extended numbered ACL. Some may lead to creating the ACL or defining its nature, but they lack the integral component of providing a description associated with that ACL from the outset. This initial context improves network management and troubleshooting, reinforcing the importance of starting with a remark for clarity and organization.