What is a criteria of the enterprise composite network model？（） includes all modules needed to meet any network design。 defines flexible boundaries between modules for scalability requirements。 clearly defines module boundaries and demarcation points to identify where traffic is。 requires specific core， distribution， and access layer requirements to match the model。
教师职务与工资待遇挂钩，没有数额限制。（）
简述校风对儿童心理发展的影响。
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?（） single-site.。 multisite with centralized call processing。 multisite with distributed call processing。 clustering over the WAN。
根据《建筑工程施工质量验收统一验收标准》，下列工程中，属于分项工程的是（）。 电气工程。 钢筋工程。 屋面工程。 桩基工程。
以下事故类别属于按伤亡事故原因分类的有（）
