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Computer Networking

Computer Networking
What is the maximum distance with maximum data rate for 802.11b?

About 90-100 feet
About 150 feet
About 65-75 feet
Over 200 feet

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Computer Networking
A smart modem can dial, hang up and answer incoming calls automatically. Can you tell who provides the appropriate instruction to the modem for this purpose?

Error detecting protocols
None of these
Link access procedure (LAP)
Communications software
Telecommunications

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Computer Networking
Which of the followings is used in communications is referred to as unshielded twisted-pair (UTP)?

Coaxial cable
None of these
Twisted-pair cable
Fiber-optic cable

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Computer Networking
Who invented the modem?

None of these
Wang Laboratories Ltd.
Apple Computers Inc.
Digital Equipment Corpn.
AT & T Information Systems, USA

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Computer Networking
Which configuration command must be in effect to allow the use of 8 subnets if the Class C subnet mask is 255.255.255.224?

Router (config) #ip subnet-zero
Router (config) #ip classless
Router (config) #ip unnumbered
Router (config) #no ip classful

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Computer Networking
Which three commands can be used to check LAN connectivity problems on a router?1. show interfaces2. show ip route3. tracert4. ping5. dns lookups

None of these
2 and 5
1 ,2 and 4
3 and 5

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