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Computer Networking

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

hub
None of these
passive hub
bridge
repeater

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Computer Networking
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?

None of these
100
150
80
30

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Computer Networking
What is the maximum data rate for the 802.11g standard?

6Mbps
11Mbps
22Mbps
54Mbps

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Computer Networking
You want to run the new 802.1w on your switches. Which of the following would enable this protocol?

Switch(config)# spanning-tree mode 802.1w
Switch(config)# spanning-tree mode rapid-pvst
Switch# spanning-tree mode rapid-pvst
Switch# spanning-tree mode 802.1w

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Computer Networking
Brad is in charge of a small network and wants to make it simple but secure. The users want to have full control over their data and still be able to share data with the rest of the office. The networking knowledge of the office staff is excellent. Which network(s) would be the best to set up?

Peer-to-peer
Server-based
Ethernet
Master domain
Share-level

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Computer Networking
What frequency range is used for microwave communications, satellite and radar?

Extremely High Frequency :30,000 MHz
None of these
Low Frequency : 30 kHz to 300 kHz
Medium Frequency : 300 kHz to 3 MHz
Super High Frequency : 3000 MHz to 30000 MHz

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