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Selective Repeat ARQ
- Processing at the receiver additionally complex
- The window size is reduced to 2(m-1) (2m/2 at most)
- Both the transmitter as well as the receiver have the same window size
- Receiver expects frames in the range of the sequence numbers
Sequence Number After the bytes have been numbered TCP assigns a sequence number to each segment that is being sent. These sequence number for each segment is the numb
What is the disadvantage of a star topology? One major drawbacks of star topology is that once the central hub or switch get damaged, the whole network becomes unusable.
802.11 DSSS a) Direct sequence spread spectrum in a 2.4 GHz band b) Each bit is replaced by a sequence of bits called a chip code, implemented at the physical layer c) Se
a) Used for sending e-mail. b) Uses port 25.
Circuit switching is a term used in communication where the communicating nodes will be connected through a dedicated channel before any communication may take place. The methodolo
One of the key roles of a System/Network Administrator is to monitor log files. This usually requires helper scripts (i.e. Perl programs) so a summary of large log files can be qui
Let's consider the network shown in Figure 1 where Snort is deployed. In Figure 1, why is Snort deployed in the DMZ instead of the Internal Network? In Figure 1, say True or
What is workstation? A workstation is a node in network that is more useful and can occur local information processing or graphics processing. A workstation generally has an in
explain history of internet?
What's the difference among distance vector and link-state protocol?
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