The diploma thesis deals with the universal mobile client-server application of Android and iOS devices solved in the native environment of the given operating systems. The work explores approaches to solving the problem in both environments. The application solution will display, store and process a variety of data sent to the server in a unified form as well as customize the look given the conditions addressed conditions and equipment. The aim of the thesis is to show and compare the native potential of the mobile device as well as to design a unified application of frequently asked issues - to view and access a large amount of stored data to the user.

This thesis deals with the design and the implementation of a client/server application for the administration of hosting services. Other solutions of hosting services administration are listed as well and they are contrasted and compared with the assigned solution. A description of the particular hosting services and their setting for the Ubuntu Linux distribution are provided. A communication protocol and a data store serving to save all the client accounts and servers were designed. Basic principles of working with C++ framework Qt and its usage for the implementation of both the server and the client application are demonstrated. The basic settings of the server application enabling it to be launched on the server as a service are mentioned as well. In the last part a description is stated of working with the client applications and administration of the client accounts.

This diploma thesis deals with design and implementation of a network application for monitoring of computers for a chosen company. The application allows administrators to automate the gathering of hardware and software information. The purpose of the application is also to monitor hardware values, such as processor temperature or harddisk free space. The design uses client-server architecture. Three applications were created: server, client and graphical management console.

<p>Innehåll: Peer-to-peer är idag en teknik som i de flesta fall förknippas med fildelning.</p><p>I detta arbete har vi försökt klargöra vilka andra möjligheter tekniken erbjuder för företag och i dessa möjligheter försökt hitta fördelar och nackdelar med tekniken. Klient-server är en vanlig teknik idag bland företag och i arbetet undersöks om peer-to-peer kan vara en möjlig konkurrent till denna teknik.</p><p>Syftet med rapporten är att se om det finns intresse bland företagen att använda sig av de möjligheter som peer-to-peer tekniken erbjuder samt att undersöka hur den skulle kunna användas.</p> / <p>Contents: Peer-to-peer is a technique that is most often associated with file sharing. In this thesis we try to examine what other possibilities the technique has to offer to companies, and in these possibilities, determine pros and cons. Client-server is a common technique today, especially amongst companies, and in this thesis we study if peer-to-peer can be a possible competitor to this technique. The purpose with the study is to see if companies are interested in using the possibilities offered in the peer-to-peer technique and how these possibilities could be used in a company.</p>

Innehåll: Peer-to-peer är idag en teknik som i de flesta fall förknippas med fildelning. I detta arbete har vi försökt klargöra vilka andra möjligheter tekniken erbjuder för företag och i dessa möjligheter försökt hitta fördelar och nackdelar med tekniken. Klient-server är en vanlig teknik idag bland företag och i arbetet undersöks om peer-to-peer kan vara en möjlig konkurrent till denna teknik. Syftet med rapporten är att se om det finns intresse bland företagen att använda sig av de möjligheter som peer-to-peer tekniken erbjuder samt att undersöka hur den skulle kunna användas. / Contents: Peer-to-peer is a technique that is most often associated with file sharing. In this thesis we try to examine what other possibilities the technique has to offer to companies, and in these possibilities, determine pros and cons. Client-server is a common technique today, especially amongst companies, and in this thesis we study if peer-to-peer can be a possible competitor to this technique. The purpose with the study is to see if companies are interested in using the possibilities offered in the peer-to-peer technique and how these possibilities could be used in a company.

This paper addresses the question formulation “Is it possible to implement automated testing in an existing client-server game in order to pinpoint faults and achieve credibility to tests?” The gaming industry’s goal, in most cases, is to release games that appeal to both their financial goals and the enjoyment factor of the players. In order to fulfill these goals, the game will need to function properly and the process to assure this is testing the game to find possible faults. This process is time and cost consuming in an exponential rate in accordance to game extensiveness, which makes this problem a very important decision in the process of development. The problem is most commonly tackled by using massive manual testing session, called alpha or beta sessions. In these session the game is at an early stage of development and gets released to a set player base to test and report issues encountered. We believe that the process of testing games could be more effective by utilizing automated testing. This thesis will investigate the possibilities to our claim. The result is a visual representation of the tests we managed to apply, while focusing on the client-server connectivity of Quake 3 and a graph of measurements for our improvised fault localization. This paper describes a solution in form of automated tests within a existing client-server game and a start to what could be early stages of a pattern obtained throughout this project.

This Master's thesis „Secure communication and data protection in the internet of things“ is dealing with crypthografy and crypthographic libraries, which are compared with eachother according to supporting algorithm and standard. For comparing therewere used following libraries: openSSL, wolfSSL, nanoSSL and matrixSSL. Practical part of the thesis is focused on testing the productivity of each ciphers and protocols of openSSL and wolfSSL libraries on RaspberryPi 2 device. Further, the thesis shows the design of communication scenario client-server in the Internet of Things (IoT). Simple authentication protocol client-server was implemented and simulated on RaspberryPi 2 device.

This thesis informs reader about main ways of client-server application design and technologies for building an Application Programming Interface (API). It compares mainly modern approaches - REST and GraphQL, which became recently popular. The final product of thesis is a web application for self-improvement of employees in software company. Application provides features like self-improvement activities management or planning of meetings. Employees management, user registration and log in are obvious. Application uses GraphQL technology as an application interface, Java programming language together with Spring Boot for server implementation and Angular for client implementation. Spring Security framework is used for authentication and authorization, MySQL was chosen for database part.

Thesis deals with device firmware design located in lorry, which provides remote access to vehicle digital tachograph data according to valid EU legislation. The result of this work is a system, which downloads digital data from digital tachograph and save them on remote server. The system for remote data downloading from automotive digital tachograph consists of three kinds of applications: server application, user application and firmware for communication device. Communication between applications uses encrypted TCP connection and own special designed messages.

The top of this thesis is design and implementation of software product for PDA's. It allows navigation with the support of internet maps, communication between participants and recording of expert information. The target platform is the Windows Mobile 6 with .NET Framework.