多项选择题
A. connection speed
B. number of remote sites
C. features to be supported
D. types of devices at the remote site
E. whether packets are encrypted using 3DES or AES
F. number of routes in the routing table at the remote site
单项选择题 Scalability is provided in the server farm module by which of the following design strategies?（）
单项选择题 Which roaming option will keep them on the same IP subnet when client traffic is being bridged through LAN interfaces on two WLCs?（）
单项选择题 Sun Stable is a global insurance company with headquarters located in Houston, Texas. The campus there is made up of a number of office buildings located within the same vicinity. In 2003, a new building, Building 331B was added. The additional building houses approximately 1000 employees. Rather than deploy a private branch exchange (PBX) in the new building, Sun Stable has decided to implement an IP telephony solution. External calls will be carried across a MAN link to another building, where a gateway connects into the worldwide PBX network of Sun Stable. Voice mail and unified messaging components are required and all IP phones and workstations should be on separate VLANs and IP subnets.Which IP telephony deployment best suits their need?（）