Command Line Interface Command line operating systems were the original ____ that all computers used, until the invention of graphical user interfaces. The consist of text only screens and graphics could only ____ using a technique known as ASCII Art. Advantages of CLIs • Quick and easy to program • Fast to use when you are ____ in the system • Very Reliable • Distraction free • Low ____ usage – good for battery powered devices like UAVs and weather stations Disadvantages of CLIs • Very difficult / un-intuitive for beginners ( you have to know the commands) • Can’t display ____ • Not good for multi-tasking • Not pretty looking Command line interfaces are still widely used today in a number of specialist and technical areas, including: • Coding • Hacking • System restore interfaces • Micro-controller controlled ____ • Servers Graphical User Interface Graphical user interfaces were invented much later than ____ but are now the most widely used type of interface. Users ____ with the system with the combination of a keyboard and a mouse/point (or a touch screen). Advantages of GUI • Can display images, videos and graphics • Because of the use of a pointer or touch screen they are far more ____ friendly • Pretty looking • Can have multiple windows open for multi-tasking Disadvantages of GUI • Take longer to ____ • More prone to ____ • More resource ____ • ____ clutter can be distracting. • Can take l____ to perform tasks than a CLI. Batch Operating System This type of operating system does not ____ with the computer ____. There is an operator which takes similar____ having the same requirements and groups them into batches. It is the responsibility of the operator to sort jobs with similar needs. Batch Operating System is ____ to manage and execute a large number of jobs efficiently by processing them in groups. ____ of Batch Operating System • Multiple users can ____ the batch systems. • The idle time for the batch system is very less. • It is easy to manage ____repeatedly in batch systems. ____of Batch Operating System • Batch systems are hard to debug. • It is sometimes costly. • The other jobs will have to wait for an ____ if any job fails. • In batch operating system the processing time for jobs is commonly difficult to accurately predict while they are in the queue. • It is difficult to accurately____the exact time required for a job to complete while it is in the queue. Examples of Batch Operating Systems: Payroll Systems, Bank Statements, etc. Network Operating System These systems run on a____ and provide the capability to ____ data, users, groups, security, applications, and other networking functions. These types of operating systems allow shared ____ to files, printers, security, applications, andother networking functions over a small private network. One more important aspect of Network Operating Systems is that all the users are well aware of the underlying configuration, of all other users within the network, their individual connections, etc. and that’s why these computers are popularly known as tightly coupled systems . Advantages of Network Operating System • Highly stable ____. • Security____ are handled through servers. • New technologies and ____ are easily integrated into the system. • Server access is possible____ from different locations and types of systems. Disadvantages of Network Operating System • Servers are costly. • User has to ____ on a central location for most operations. • ____ and updates are required regularly. Examples of Network Operating Systems are Microsoft Windows Server 2003, Microsoft Windows Server 2008, UNIX, Linux, Mac OS X, ____ NetWare, BSD, etc.

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