空间距离语
某公司每年购买原材料300万元，卖方提供的信用条款为“2/10，N/30”，公司总是在折扣期内付款，设一年有360天，问商业信用的成本是多少？若公司将其付款期延长到40天，放弃现金折扣的成本又为多少？
Which tools on Cisco.com could you use to plan for correct Cisco lOS images to support a customer’s security design and requirements？ （Choose two.）（） Cisco lOS Matrix Navigator。 Cisco Feature Navigator。 Cisco lOS Package Planner。 Cisco lOS Security Planner。 Cisco Dynamic Configuration Tool。
Which one of the following potential issues is eliminated by using split horizon？（） Joined horizons。 Packet forwarding loops。 cisco Express Forwarding load-balancing inconsistency。 Asymmetric routing throughout the network。
C220的PON口的发射光波长是（） 1310nm。 1490nm。 990nm。 1530nm。
the network administrator has been asked to give reasons for moving from ipv4 to ipv6. what are two valid reasons for adopting ipv6 over ipv4?（）
