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suppose the r-b link in the previous exercise changes from a bandwidth delay to a propagation delay so that two packets
for the situation given in the previous problem compute the effective throughput achieved by this connection assume
assume that tcp implements an extension that allows window sizes much larger than 64 kb suppose that you are using this
two users one using telnet and one sending files with ftp both send their traffic out via router r the outbound link
write a program to construct a dictionary of all words defined to be runs of consecutive non whitespace in a given text
the one-dimensional discrete cosine transform is similar to the two-dimensional transform except that we drop the
write a program that implements forward and backward dct using floatingpoint arithmetic run the program on a sample
compare the size of an all-white image in jpeg format with a typical photographic image of the same dimensions at what
create an 8 times 8 grayscale image consisting of a 64-character ascii text string use lowercase letters only with no
tcp uses a host-centric feedback based windows based resource allocation model how might tcp have been designed to use
suppose we have a video of two white points moving toward each other at a uniform rate against a black background we
the mpeg stat program can be used to display statistics for video streams use it to determine for several streamsa
suppose you want to implement fast-forward and reverse for mpeg streams what problems do you run into if you limit your
think about what functions might reasonably be expected from a video standard fast-forward editing capabilities random
it is possible to define flows on either a host-to-host basis or a process-to-process basisa discuss the implications
suppose two hosts a and b are connected via a router r the a-r link has infinite bandwidth the r-b link can send one
suppose a congestion-control scheme results in a collection of competing flows that achieve the following throughput
create a grayscale image consisting of an 8 times 8 grid with a vertical black line in the first column compress into
let p le 1 be the fraction of machines in a network that are big-endian the remaining 1 - p fraction are little-endian
suppose we have a compression function c which takes a bit string s to a compressed string csa show that for any
different architectures have different conventions on bit order as well as byte order-whether the least significant bit
suppose you have a machine with a 36-bit word size strings are represented as five packed 7-bit characters per word
xdr is used to encodedecode the header for the sunrpc protocol illustrated by figure 520 the xdr version is determined
write your own implementation of htonl using both your own htonl and if little-endian hardware is available the
use xdr and htonl to encode a 1000-element array of integers measure and compare the performance of each how do these