CCNA 4 – Chapter 1 (100%)

May 23rd, 2009 | admin | 206 views | 0 Comments »

1. At which two layers of the OSI model does a WAN operate? (Choose two.)
• Physical Layer
• Data Link Layer
• Network Layer
• Transport Layer
• Presentation Layer
• Application Layer
2. Which three WAN devices can be found in the cloud? (Choose three.)
• ATM switches
• core routers
• CSU/DSU
• Ethernet switches
• Frame Relay switches
• repeaters
3. Which networking device is [...]