The following Cisco Catalyst Series switches fit in the access area. Which switches also utilize StackWise technology to address the needs of companies with growing networks by allowing themto connect？（） [" Cisco Express Catalyst 500 Series switches"," Cisco Catalyst 2900 Series switches"," Cisco Catalyst 3560 switches"," Cisco Catalyst 3700 Series switches"," Cisco Catalyst 4500 Series switches"," Cisco Catalyst 6500 Series switche"]
通信中仅仅使用数字签名技术，不能保证的服务是（）。 ["认证服务","完整性服务","保密性服务","防否认服务"]
During which phase of the steps to success methodology for Cisco SMB security solutions would the Network Readiness Assessment be used to assess the readiness of an existing network infrastructure and determine which， if any， modification should be made prior to implementation？（） ["Position","Prepare","Design","Perform","Pla"]
What is the maximum number of hexadecimal characters allowed when configuring the wpa or wpa2 passphrase in cisco adu？（） ["128","32","16","64"]
叙述采用二进制表示信息的主要原因。
试述商业银行负债业务的作用。
