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What is CRC
The CRC is computed while transmission and appended to output stream as soon as last bit goes out onto wire. If the CRC were in header, it will be necessary to make a pass over frame to compute CRC before transmitting. This would need each byte to be handled twice-once for check summing and one time for transmitting. Using trailer cuts the work in half.
Q. Show the Flow characteristics? Flow characteristics Reliability - if lacking means that packets or ACKs are lost - more important with FTP, SMTP than with audio
Q. Modem stands for modulator - demodulator ? - Modulator are to creates an analog signal from binary data - Demodulator are to recovers the binary data from the modulated s
How LANs connected to Internet. Doubling every 18 months means factor of four gains in 3 years. In 9 years, gain is then 43 or 64, which leads to 6.4 billion hosts. My intuitio
what is logical ring maintenance and how does it work>?
802.11b HR DSSS a) High-rate DSSS using a 2.4 GHz band b) Similar to DSSS excluding for encoding method c) Uses complementary code keying (CCK), encoding 4 or 8 bits to
Q1. What advantages do you see in having a layered concept of computer networks? Which layers or OSI structure deals with identification of a host? Explain the proces
a) An Introduction/Overview of Network Security issues. b) A Risk Assessment analysis- to include: Assets T
What is IP spoofing and how can it be stopped?
What is uniform delivery time A uniform delivery time is required for voice, so amount of jitter in net- work is significant. This could be expressed as standard deviation of d
What is the major issue with hop count metric issue
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