http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 1. Which statement about WAN protocols is correct? Most WAN protocols use HDLC or a variant of HDLC as a framing mechanism. 2. Which statement is true of the functionality of the layers in the hierarchical network model? The distribution layer aggregates WAN connections at the edge of the campus. 3. Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits? ATM 4. A U.S. company requires a WAN connection used only to transfer sales data from individual stores to the home office. All transfers will occur after business hours. The required bandwidth for this connection is estimated to be less than 38 kbps. Which type of connection requires the least investment for this company? analog dialup 5. What is an advantage of packet-switched technology over circuit-switched technology? Packet-switched networks can efficiently use multiple routes ins