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Computer Networking

Computer Networking
In a network with dozens of switches, how many root bridges would you have?

2
1
12
5

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Computer Networking
Which of the following device copies electrical signals from one Ethernet to another?

repeater
passive hub
None of these
bridge
hub

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

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

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Computer Networking
Which of the following is used for modulation and demodulation?

modem
multiplexer
None of these
gateway
protocols

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Computer Networking
When you connect to an online information service, you are asked to provide some kind of identification such as your name, an account number and a password. What is the name given to this brief dialogue between you and the information system?

Safeguard procedure
Security procedure
Log-on procedure
None of these
Identification procedure

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Computer Networking
How often are BPDUs sent from a layer 2 device?

Every 10 minutes
Every 2 seconds
Never
Every 30 seconds

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