Q&A

1:	How many possible keys are there for an 8-bit key? 8 82 28 65,536
2:	Which type of cipher typically acts on small units of data? Block cipher Stream cipher
3:	What is the maximum key length available with 3DES? 56 bits 168 bits 160 bits 112 bits 128 bits
4:	The AES has a variable key length. True or False?
5:	The security of the Diffie-Hellman algorithm is based on which of the following? The secrecy of public values The extreme amount of time required to perform exponentiation The difficulty of factoring large primes The secrecy of g and p values
6:	What is the length of MD5 output (hash)? 64 bits 128 bits 160 bits 168 bits 256 bits
7:	What is the length of SHA-1 output (hash)? 64 bits 128 bits 160 bits 168 bits 256 bits
8:	What is eavesdropping? An intruder gains illegitimate access by posing as an individual who actually can access secured resources. An intruder "sniffs" the data transmission between two parties during communications over a public medium. An intruder interrupts a dialogue and modifies the data between the two parties. The intruder would take over the entire session in an extreme case.
9:	Which protocols can be layered on top of SSL? (Multiple answers are possible.) HTTP OSPF FTP Telnet TFTP
10:	Name the three primary security vulnerabilities for communication over a public network.