The document contains a series of questions related to cryptographic algorithms and security protocols. It covers the applications of DES, RC4, AES, and RSA, as well as detailed discussions on SSH, IPSec, HTTP authentication, HTTPS, secure FTP, and PGP. Each question requests concise answers, including figures where applicable.

1. Questions-1 Provide short answers (i.e., no more than five lines on average 1. Discuss the
applications of the DES, RC4, AES, and RSA Algorithms. 2. Using a figure, state the operations
and the usages of the SSH Protocol. 3. Specify the computations of the IPSEC Protocol, its status
in the Network Stack, and possible interactions with its router. 4. Explain and show (in a figure)
the operations of the HTTP Authentication and the HTTPS Protocol (HTTP over SSL). 5.
Mention the usages, advantages, and disadvantages of Secure FTP and PGP.