Computer Networking
Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?

192.168.168.128-192
192.168.168.129-191
192.168.168.128-190
192.168.168.129-190

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Computer Networking
Which of the following technique is used for fragment?

one of the pieces that results when an IP gateway divides an IP datagram into smaller pieces for transmission across a network that cannot handle the original datagram size
None of these
a technique used by protocols in which a lower level protocol accepts a message from a higher level protocol and places it in the data portion of the low level frame
All of these
a technique used in best-effort delivery systems to avoid endlessly looping packets

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Computer Networking
Modulation is the process of

converting digital signals to analog signals
performing data encryption.
Multiplexing various signals into high speed line signals
converting analog signals to digital signals

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