In what two ways does the Cisco SR 520 Secure Router complement the Cisco Smart Business  Communications System？ （）

The Cisco Smart Business Communications System offers support of third-party applications. When using TimeCard View， what device is used by employees to clock in and clock out？（）  

Which three pre-sales Smart Design documents are available to help you implement and install a solution？（）

Wireless components must work together for interoperability and performance. Which standard has specifications that are 2.4 GHz， 54 Mb/s， and a range of 150 feet？（）  

A computer is connected to the network through a NIC， which has a unique assignment that is called the Ethernet MAC address. Which layer of the OSI model does the MAC address use to communicate with the network？（）

What three elements are included with Cisco Small Business Pro Service？（） 

Cisco Small Business Switches are specifically engineered for the small business customer. What are two characteristics common to Cisco Small Business Switches？（）

Layer 3 （the network layer） provides connectivity and path selection between two host systems that may be located on geographically separated networks. Which two devices operate at the network layer？（）

Bridges and switches are Layer 2 devices that provide the same basic functionality but that also have some differences. Which two traits apply to switches only？（）

Which two wireless devices acts as a communication connection between the client and WLAN（）