[多选] A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device?（）

Which two servers support memory extension technology and give list？（）  B200。  C210。  B250。  C260。  C460。 一个基因或一个表型特征若在群体内有多于一种的形式，它就是多态的基因或多态的表型。 弹性成本预算编制方法中的图示法，其缺点是（） 比较麻烦。 准确性不高。 用编好的预算去考核实际发生的成本，显然是不合理的。 没有现成的预算金额。 人际吸引 零基预算的缺点是（） 比较麻烦。 成本较高。 准确性不高。 缺乏客观依据。 A company is installing IP phones. The phones and office computers connect to the same device. To ensure maximum throughput for the phone data, the company needs to make sure that the phone traffic is on a different network from that of the office computer data traffic. What is the best network device to which to directly connect the phones and computers, and what technology should be implemented on this device?（）