1. B. Companies can use a WAN connect remote locations, and a LAN can make a local connection in a building.
D. Only WANs require a CSU/DSU to be used on the ends of the cable.
2. A. IEFT, C. ISO, D.EAI, F.ITU
3. A. Routers enable different IP networks or IP subnets to communicate with each other C. Path selection is one of the main functions of a router. E. Routers have a central processing unit and memory.
4. A.ROM, B Flash Memory, E.RAM
5. C.RAM stores the current configuration information. E. RAM stores routing tables for the router.
6. C. DTE usually resides on the customer’s premises. D.DTE is an acronym for data circuit-terminating equipment.
7. B. DCE provides clocking to the DTE. C. DCE is an acronym for data circuit-terminating equipment.
8. B. Data link D. Physical
9. E. Serial port with DCE cable.
10.C. Ethernet interfaces usually use RJ-45 connectors. D. Interfaces can accept smart serial connectors.
11. B. Accessing the router to change configurations. D. Password recovery
12. A. Bits per second
13. A. Frame relay C. IETF
14. B. Router C. Modem
15. A Holds the Cisco IOS software images C. Keeps its contents when a router is rebooted
D. Can store multiple versions of Cisco IOS software
16. A. Can be performed using the console port with a rollover cable. D. Can allow troubleshooting when a link is down. E. Can be performed using dialup connection.
17. A. Item B contains serial interfaces B. Items C and D can be used for router management.
D. Item B can accept either DTE or DCE cables.
18. B. NVRAM stores the startup configuration file, and RAM stores the running