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Computer Networking

Computer Networking
The slowest transmission speeds are those of

coaxial cable
microwaves
twisted-pair wire
fiber-optic cable

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Computer Networking
The communication mode that supports two-way traffic but only one direction at a time is

multiplex
half duplex
None of these
simplex
duplex

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Computer Networking
What is the name of the device that converts computer output into a form that can be transmitted over a telephone line?

None of these
Modem
Teleport
Multiplexer
Concentrator

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Computer Networking
Which of the following is not a disadvantage of wireless LAN?

All of these
higher error rate
interference of transmissions from different computers
Slower data transmission

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Computer Networking
With an IP address set starting with 150, you currently have six offices that you are treating as subnets. Plans are in place to open 10 more offices before the end of the year. What subnet mask should you use to satisfy the needed number of subnets and maximize the number of hosts available at each site?

224
240
248
192
252

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Computer Networking
What is the minimum number of wires required for sending data over a serial communications links?

3
2
None of these
4
1

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