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Q. What is Retransmission timer?
Retransmission timer
- not fixed because paths that IP packets take may differ
- If too short - retransmissions -> waste of bandwidth
- If too large - delay for the application program
RTT = * previous RTT + (1- ?)*current RTT, usually 90 %
Karn's algorithm:
- don't consider the RTT of a retransmitted segment in the calculation of the new RTT
Define Character Stuffing? In byte stuffing (or character stuffing), a particular byte is added to the data section of the frame when there is a character with the same pattern
Q. Explain Silly window syndrome? When either sending application sends data gradually or receiving application consumes data slowly - Illustration when 1 byte sent 40 bytes
Question: (a) Explain the usage of the following parts of the IPv4 datagram format. i. VERS ii. HLEN iii. TOTAL LENGTH iv. SERVICE TYPE v. HEADER CHECKSUM (b) Na
what are the main problems of signal propagation?why do radio waves not always follow a straight line?why is reflection both useful and harmful?
Let us firstly illustrate the idea of merging two sorted sequences using a odd-even merging circuit. The functioning of a merging circuit is as follows: 1) Let there be two so
Get the network design for a company
There are many types of servers:- a) File servers b) Database servers c) Transaction servers d) Groupware servers e) Object servers Web servers.
DNS spoofing This process is generally refers to the process of responding a DNS request that was supposed to implement for another server. This can be in the case where the s
What are the basic LAN topologies? The three simple LAN topologies that are combined to shape any practical topology are called as basic LAN topologies. They are, Bus Topology
Q. Define the Distance Vector Routing? Distance Vector Routing Every router periodically shares its knowledge about the entire internet with its neighbours Sharing
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