Client/Server Computing:

Q86. DES uses 64-bit data blocks. a. true b. false Q87. Cryptography is fundamental to security in distributed systems. a. true b. false Q88. In the Reduced Interfaces for Secure System Components (RISSC) approach, any security-critical server will be placed on a separate machine isolated from end-user systems using low-level secure network interfaces. a. true b. false Q89. A security policy describes precisely which actions the entities in a system are allowed to take and which ones are prohibited. a. true b. false Q90. A widely applied scheme for establishing a shared key across an insecure channel, is the Joe Diffie key exchange. a. true b. false