Exam: cs634(7th Exam. testbank)
Name_A.Professor: Essam Hamed_
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers
Restoring the plaintext from the ciphertext is _ .
Cryptography and Network Security: Principles and Practice, 6 th Edition, by William
CHAPTER 2: CLASSICAL ENCRYPTION TECHNIQUES
TRUE OR FALSE
1. Symmetric encryption remains by far the most widely used of the
two types of encryption.
COMPUTER NETWORKS : 03-60-467-01
UNIVERSITY OF WINDSOR
The actual Midterm examination will be s
Internet vs Intranet
Student name : nedaa farag mosa
A means of
world via dedicated routers and servers. When two computers are connected over the Internet, they
can send and receive all
The article on this page was originally published in 1997 and is therefore outdated. The "Home and Business" section of the US-CERT
website offers more recent guidance about denial-of-service a
Denial of service (or DoS for short) attacks are a type of attacks against computers
connected to the Internet. Unlike a privacy attack, where an adversary is trying to get
access to resources to which it has no authorization, the goal of
Row Transposition Ciphers
Student name : Nedaa farag mosa
Q : Decrypt the ciphertext : tatackptpsoonentudiltamowxyz , using the key 3421567?
1)First we calculate the number of rows in the cipher matrix .
according to the key we have 7