An alternative to LAN is simply a big timesharing system with terminals for all users. Give two advantages of a client-server system using a LAN.

Allied Group, Columbia College,

Data link protocols almost always put the CRC in a trailer rather than in a header. Why?

Many business computers have three distinct and world wide unique identifiers. What are they?

Can a machine with a single DNS name have multiple IP addresses? If so give a possible example. If not then explain why not?

Suppose an organization uses Kerberos for authentication. In terms of security and service availability, what is the effect if AS or TGS goes down?

Give two reasons why PGP compresses messages.

What is the relationship between Java script, J script and ECMA script?

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Sony,

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