Technology Questions

Security features are very essential in the system as it provides an overall security of the system by applying the patches and the services that keeps the unwanted access away. 

The security features included are as follows:

- Use of algorithms in relation to, the security and the system to, solve the problem of the security. 

- Use of SSL or any encryption method to, protect the system from intrusion or any other attack. 

- Use of SSL in the SimpleWebServer that doesn’t provides the protection against the DoS attack and doesn’t allow the accessing to, be done using the /etc/shadow.

iOS Simulator can be used to test mobile applications. Xcode tool that comes along with iOS SDK includes Xcode IDE as well as the iOS Simulator. Xcode also includes all required tools and frameworks for building iOS apps.  However, it is strongly recommended to test the app on the real device before publishing it.

- Class selector can be given to an overall block. This is sometimes termed as block element as well, whereas ID selector identifies a unique name and a style for a specific element. 

- ID selector declares the style for only one particular element which can be differentiated from other element, whereas Class selector is being given for the whole complete block.

- Web hosting services provide internet hosting and its services that provide organization to build the websites. 

- The web hosting services also allow the individuals to access the websites through the World Wide Web. 

- Web hosting provides the space to put their content and allow the clients to provide the Internet connectivity. 

- It provides the data center that allows the use of higher space and connectivity properties for the Internet users. 

- It provides tools to allow the website to run on the servers and easily accessible from the outside world using the browser.

There are different types of hosting provided to upload and share their files using the web or Internet. 

- Free web hosting service: It provides limited services and offers it to companies in that it offers advertisements and other services with limitations. 

- Shared web hosting service: where a server shares many websites all placed at one place having the range from few to hundred. 

* The domains are most probably remains shared with a common pool of resources that is based on the server like RAM and CPU.

- Reseller web hosting: This is the web hosting that allows clients to provide web hosting to others. This includes individual domains that are listed using the affiliated with a reseller. 

- Virtual Dedicated Server: This is also known as also known as a Virtual Private Server (VPS). This provided the divided server resources in the virtual servers and the method that doesn’t relate directly to the hardware. 

- Home server: This is a single machine server that can be thought as a personal server that is used to host one or more web sites using the connection.

- The principle of least privilege is used to provide more security to the computer programs. 

- The principle allows the designing of the program such that any unauthorized access is not allowed and only the person who owns the program will be able to access it. 

- The services provided should be able to access only those products that need the services. 

- Web servers that are involved in responding the queries of the web users provide only accessing to the HTML files that will serve the purpose of the programs. 

- Computer programs should be made such that it provides secure features of logging into the program with proper authentication.

- A web page with large number of images takes a longer time to load. This is because each image separately sends out a http request.

- The concept of CSS sprite helps in reducing this loading time for a web page by combining various small images into one image. This reduces the numbers of http request and hence the loading time.

:: is the scope resolution operator. When local variable and global variable are having same name, local variable gets the priority. C++ allows flexibility of accessing both the variables through a scope resolution operator