The junior TestKing trainee Ellen asks you to describe what is specific for a global command.<br>What should you tell her?<br>A. A command that is available in every release of IOS, regardless of the version or deployment status.<br>B. A command that can be entered in any configuration mode.<br>C. A command that is universal in application that supports all protocols.<br>D. A command that is implemented in all foreign and domestic IOS versions.<br>E. A command that is set once and affects the entire router.<br>Answer: A<br>Explanation:<br>Global command is available an all releases of IOS .In every router one has to define minimum hostname . This<br>will be available in Global config mode in all versions of images.<br>老大说是影响全局的模式。那应该选E啊!