Decrypt the message opehhistlwilkwpr which is the cyphertext produced by encrypting a plaintext message using the transposition cypher with blocks of four letters and the permutation σ of {1, 2, 3, 4} defined by
a) σ(1) = 4,
b) σ(2) = 1,
c) σ(3) = 2,
d) σ(4) = 3.

Your friend kayla is starting her own business and asks you whether she should set it up as a p2p network or as a client-server network. list three questions you might ask to kayla decide which network to use and how her answers to those questions would affect your recommendation.

What need most led to the creation of the advanced research projects agency network? darpa wanted scientists to be able to collaborate and share research easily. darpa wanted american and russian politicians to be able to communicate. darpa wanted astronauts to be able to contact nasa and the white house. darpa wanted factory owners to be able to coordinate supply chains.

Which of these devices is usually the default for most home network?