- Virus Trap Door
A virus is a program that can “infect” other programs by modifying them. Modification includes a copy of the virus program, which may infect other programs. Computer virus has similarity with biological virus, a biological virus infects the machinery responsible for the living cell to work and a computer virus carries in its instructional code the recipe for making perfect copies of it.
- Software as a Service in Australia
This report provides insightful analysis of the SaaS market and its dynamics, the role of ISVs and detailed profiles of leading SaaS vendors. It offers data on market size and growth forecasts for SaaS applications in the enterprise market in ANZ. Besides extensive interviews with senior industry executives and secondary research, this report also brings the results of the survey of 103 CIOs and IT decision-makers in large and SMB enterprises about the level of awareness and adoption trends.
- Suspended Process
The three principal states that have been described (Ready, Running, Blocked) provide a systematic way of modeling the behavior processes and guide the implementation of the operating system. Many operating systems are constructed using these three states.
- Data Link Layer
The physical layer provides only a raw bit stream. The data link layer attempts to make the physical link reliable and provides the means to activate, maintain, and deactivate the link. The principle services provided by the data link layer to higher layers are those of error detection and error control. Thus, with a fully functional data link layer protocol, the next higher layer may assume error-free transmission over the link.
- Network Layer
The network layer provides for the transfer of information between computers across some sort of communication network. It relieves higher layers of the need to know anything about the underlying data transmission and switching technologies used to connect systems. The network service is responsible for establishing, maintaining, and terminating connections across the intervening network. At this layer, the computer system engages in a dialogue with the network to specify the destination address and to request certain network facilities, such as priority.
- Pointer Variables
Pointers are a very useful part of efficient C programming. They are variables that store the memory address of other variables.
- Classes of Client Server Applications
There is a spectrum of implementation that divides the work between client and server differently. Processing can be allocated in a number of ways. There are several major operations for database applications. They are host based processing, server based processing, client based processing, and Cooperative based processing.
- Client or Server Applications
The central feature of client/server architecture is the allocation of application tasks between clients and server. In both client and server the basic software is an operating system running on the hardware platform. The platforms and the operating systems of client and server may differ.
- Structure in a C Program
A structure in a C program can contain one, or more, variables of the same, or different data types. These are grouped together in a single structure and can conveniently reference using its name. Grouping related variables together in a structure is helpful in organizing complicated data, especially in larger programs. For instance, a structure might be created to describe a payroll record, with variables to store an employee`s name, address, salary, national Insurance number, etc.
- Function Arguments
Data can be passes as arguments to custom functions that can then use that data in the execution of their statements. The function prototype must include the name and data type of each argument.