Review Questions

1.	What are two criteria for evaluating network operating system software?
2.	How does multiprocessing improve NOS performance?
3.	How does the domain model in Windows 2000 Server help to reduce server management?
4.	What is one disadvantage of NT Server that results in server downtime?
5.	What significant improvement did Microsoft make to Windows Server 2003?
6.	True or False: Windows 2000 Active Directory services supports the NT domain model.
7.	What type of network model does NetWare 3.x use?
8.	What type of network model does NetWare 4.x use?
9.	What is the current version of NetWare?
10.	What does NLM stand for, and what is the purpose of an NLM?
11.	What change was made to NetWare 5.1 that improved network performance on an IP-based network?
12.	Why is Unix typically the first choice for Internet servers?
13.	What is a disadvantage of both Unix and Linux?
14.	Why might Linux be a poor selection for someone new to Linux and Unix?
15.	What is one major reason why Linux has become so popular?

Answers

1.	Reliability, scalability, performance, interoperability
2.	Two or more CPUs can be used to simultaneously process a single instruction.
3.	Servers in the domain share the same database of users and security-access levels.
4.	Configuration changes often require the server to be rebooted.
5.	Windows Server 2003 builds upon the features of Windows2000 Server and offers enhanced performance and reliability.
6.	True
7.	Client-server
8.	Directory services
9.	NetWare 5.1
10.	NetWare Loadable Module. An NLM loads and unloads server and network services dynamically.
11.	NetWare 5.1 adds completely pure IP protocol support.
12.	Unix is the most reliable, stable, and fastest NOS.
13.	Both can be difficult to learn because of the vast number of commands.
14.	Besides the effort involved in learning commands, there is very limited support for Linux.
15.	It has characteristics similar and in some cases, equal to Unix. And it is free.