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Computer Networking

Computer Networking
Segmentation of a data stream happens at which layer of the OSI model?

Physical
Network
Transport
Data Link

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Computer Networking
You are unsuccessful in telnetting into a remote device. What could the problem be?1. IP addresses are incorrect.2. Access control list is filtering Telnet.3. There is a defective serial cable.4. The VTY password is missing.

3 only
All of these
2 and 4 only
1 only

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Computer Networking
Which of the following frequency ranges is used for AM radio transmission?

Very Low Frequency : 3 kHz to 30 kHz
Very High Frequency : 30 MHz to 300 MHz
Medium Frequency : 300 kHz to 3 MHz
None of these
High Frequency : 3 MHz to 30 MHz

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Computer Networking
Business meeting and conferences can be held by linking distantly located people through a computer network. Not only the participants exchange information but are able to see each other. What is it called?

Telemeeting
Telemailing
None of these
Teleconferencing
Teletalking

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Computer Networking
The signal to noise ratio for a voice grade line is 30.1 dB (decibels) or a power ratio of 1023:1. The maximum achievable data rate on this line whose spectrum ranges from 300 Hz to 4300 Hz is

9600 bps
None of these
6200 bps
31000 bps
34000 bps

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Computer Networking
If one link fails, only that link is affected. All other links remain active. Which topology does this?

Physical topology
Mesh topology
Bus topology
Star topology

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