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Computer Networking

Computer Networking
Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

Layer 4
Layer 2
Layer 3
Layer 7

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Computer Networking
The network address of 172.16.0.0/19 provides how many subnets and hosts?

7 subnets, 30 hosts each
7 subnets, 2,046 hosts each
8 subnets, 8,190 hosts each
8 subnets, 2,046 hosts each

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Computer Networking
Now-a-days computers all over the world can talk to each other. Which is one of the special accessories essential for this purpose?

Modem
Scanner
Fax
None of these
Keyboard

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Computer Networking
If digital data rate of 9600 bps is encoded using 8-level phase shift keying (PSK) method, the modulation rate is

None of these
9600 bands
1200 bands
3200 bands
4800 bands

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Computer Networking
With an IP address starting at 200, you currently have 10 subnets. What subnet mask should you use to maximize the number of available hosts?

252
224
192
248
240

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Computer Networking
Which of the following protocols uses both TCP and UDP?

SMTP
Telnet
DNS
FTP

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