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Related Flashcards
Cards In This Set
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1. Which three statements accurately describe WANs? (Choose three.)
The companies in which WANs are implemented usually own them.
WANs connect devices that are separated by wide geographic areas.
WANs use the services of carriers such as telephone companies, cable companies, satellite systems, and network providers.
WANs generally carry limited types of data at high speeds.
WANs use serial connections of various types to provide access to bandwidth.
WANs connect devices that are in a small geographic area.
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.WANs connect devices that are separated by wide geographic areas.
WANs use the services of carriers such as telephone companies, cable companies, satellite systems, and network providers. WANs use serial connections of various types to provide access to bandwidth. |
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2. Which three communications needs do WANs address? (Choose three.)
Workers in a small business need to be able to communicate and share data with each other.
Administrative staff within a school needs to share schedule information with the teachers.
Organizations often want to share information with other organizations across large distances.
A department needs to share data files with a remote department
Students need to do research for classes by accessing library indexes and publications located in other parts of their country and in other parts of the world.
Workers within a branch of a large company need to share project data with each other.
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Organizations often want to share information with other organizations across large distances.
A department needs to share data files with a remote department Students need to do research for classes by accessing library indexes and publications located in other parts of their country and in other parts of the world. |
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3. Which two statements accurately describe the difference between LANs and WANs? (Choose two.)
A WAN transmits data faster than a LAN.
A LAN transmits data faster than a WAN.
While a LAN connects computers, peripherals, and other devices in a single building or other small geographic area, a WAN transmits data across broad geographic distances.
A company or organization usually owns the hardware and software required for WANs. LANs span large geographic areas if a LAN administrator configures them correctly.
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A LAN transmits data faster than a WAN.
While a LAN connects computers, peripherals, and other devices in a single building or other small geographic area, a WAN transmits data across broad geographic distances. |
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4. At which OSI level do WAN protocols describe how to provide electrical, mechanical, operational, and functional connections to the services of a communications service provider?
Layer 1
Layer 2
Layer 3
Layer 4
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Layer 1 |
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5. At which OSI level do WAN protocols define encapsulation of data for transmission toward a remote location and the mechanisms for transferring the resulting frames?
Layer 1
Layer 2
Layer 3
Layer 4
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Layer 2 |
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6a. In analog lines, they convert the digital signal of the sending device into analog format for transmission over an analog line and then convert the signal back to digital form so that the receiving device can receive and process the network signal.
Routers
Communication servers
Modems (DSU/CSU)
Other networking devices
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Modems (DSU/CSU) |
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6b. They concentrate dial-in and dial-out user communications.
Routers
Communication servers
Modems (DSU/CSU)
Other networking devices
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Communication servers |
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6c. They provide internetworking and WAN access interface ports.
Routers
Communication servers
Modems (DSU/CSU)
Other networking devices
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Routers |
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6d. WANs use these to provide access.
Routers
Communication servers
Modems (DSU/CSU)
Other networking devices
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Other networking devices |
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7a. Allow the router to connect to the LAN media through Ethernet or some other LAN technology such as Token Ring or ATM
Management ports
LAN interfaces
WAN interfaces
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LAN interfaces |
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7b. Are made through a WAN interface on a router to a service provider to a distant site or to the Internet
Management ports
LAN interfaces
WAN interfaces
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WAN interfaces |
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7c. Provide a text-based connection for the configuration and troubleshooting of the router
Management ports
LAN interfaces
WAN interfaces
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Management ports |
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8. Which two statements accurately describe data-link protocols in a WAN? (Choose two.)
Many data link layer protocols use a framing mechanism similar to HDLC.
Data link layer protocols determine the cable type to be used in the WAN.
Data link layer protocols define how data is encapsulated for transmission to remote sites, and also the mechanisms for transferring the resulting frames to establish the connection across the communication line from the sending to the receiving device.
RIP is an example of a data-link protocol.
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Many data link layer protocols use a framing mechanism similar to HDLC.
Data link layer protocols define how data is encapsulated for transmission to remote sites, and also the mechanisms for transferring the resulting frames to establish the connection across the communication line from the sending to the receiving device. |
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9a. Creates and combines multiple channels on a single line. Bandwidth is allocated for information from each data channel based on the signal frequency of the traffic.
Time-division multiplexing
Frequency-division multiplexing
Statistical multiplexing
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Frequency-division multiplexing |
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9b. Information from each data channel is allocated bandwidth based on short, preassigned time slots, regardless of whether there is data to transmit.
Time-division multiplexing
Frequency-division multiplexing
Statistical multiplexing
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Time-division multiplexing |
