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Computer Networking

Computer Networking
What is the port number for NNTP?

79
80
119
70
None of these

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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

34000 bps
9600 bps
None of these
31000 bps
6200 bps

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Computer Networking
If you wanted to delete the configuration stored in NVRAM, what would you type?

erase startup
erase running
delete nvram
erase nvram

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Computer Networking
If an Ethernet port on a router were assigned an IP address of 172.16.112.1/25, what would be the valid subnet address of this host?

172.16.96.0
172.16.255.0
172.16.112.0
172.16.0.0

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Computer Networking
Select the wrong data communication system component:

Medium
Protocol
Transits
Receiver

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Computer Networking
End-to-end connectivity is provided from host-to-host in:

None of these
Network layer
Session layer
Transport layer
Data link layer

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