You are operating a multi-vendor network and are considering adding redundancy at the access level. Which routing redundancy solution should you implement?（） ["Both Gateway Load Balancing Protocoland Hot Stand by Router Protocol","Gateway Load Balancing Protocol","Virtual Router Redundancy Protocol","Hot Stand by Router Protocol"]
触电急救的基本原则是什么？
SMB network decision makers commonly site which of the following as typical network requirements?（） [" scalability, effectiveness, high availability, mobility"," cost effectiveness, high availability, hosting multiple protocols, hosting webservers"," QoS, multicast, cost effectiveness, redundancy"," centralization, security, highly available, scalability"]
Which two WAN access methods are specified for a simplified and cost-effective Cisco Single-Site Secure Network Foundation Deployment Design？（） ["Frame-Relay","Leased Line","MPLS","DSL","Cable","Wirele"]
临界形核功
写出完成下列功能的UNIX命令。显示当前目录jj.a文件的内容
