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Secure, reliable and adaptive network based on Cisco devices
Lefler, Přemysl ; Komosný, Dan (referee) ; Kubánková, Anna (advisor)
This bachelor thesis deals with design of secure, reliable and adaptive network using Cisco network devices. Thesis includes design of a network with description of each individual technology, that were used in the design to meet requirements for safety, reliability and adaptivity. The last chapter describes frequently occuring network attacks along with a description of their execution followed by implementation of defense against them.
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Design of remote area networking
Mikulský, Petr ; Mašek, Pavel (referee) ; Kubánková, Anna (advisor)
This bachelor thesis deals with creation of network for two villages near the russian city Izhevsk. The introductory part of the thesis describes single technologies, that can be used for creation of the network. In the successive part of the bachelor thesis a network design is created, that containts logical and physical network topology. Last part contains simulation of created network in an electromagnetic simulation tool Wireless InSite.
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Data transmission over distribution power networks
Vašíček, Filip ; Mišurec, Jiří (referee) ; Zeman, Václav (advisor)
This thesis brings together information about the data transmission over distribution power networks with a view to the broadband systems. The division of PLC systems is mentioned and the principle and characteristics of PLC technology are described. I was also interested in topology and a description of elements of PLC network. There are presented the two most frequently used systems: HomePlug and DS2. Next section contains an analysis of network architecture, especially the physical layer. The protection of data against errors and the OFDM method are described. There are also analyzed other layers of the network reference model, the mechanism of quality of services and the data encryption using AES. I was also focused on the issues of standardization of PLC, the electromagnetic compatibility and a description of the international project OPERA. In the practical part is processed the concept of the laboratory PLC network with elements of the system Defidev/DS2. Functionality of the network has been tested by measuring of the bit rate on the physical and application layer.
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Planning of UTMS access networks
Spěváček, Jiří ; Kapoun, Vladimír (referee) ; Novotný, Vít (advisor)
The master thesis is focused on the Universal Mobile Telecommunications System (UMTS) - the third-generation cell phone technology. The first part describes the development of mobile networks and the structure of the UMTS. The second part, the main part of the thesis, is focused on the planning procedure of the UMTS access network. It consists of an explanation of the general planning procedure and a specific project designing the coverage of Pelhřimov surroundings. The final part of the thesis contains a laboratory problem including instructions.
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Structured Cabling Design
Zemánek, Jakub ; Zálešák, Jiří (referee) ; Ondrák, Viktor (advisor)
This work is about creation computer network in a small company, which specialization is industrial automatization. Previous status of it is fully unsuitable and problem is also missing of any documentation. Purpose of this work is to create suggestion of the new computer network with universal cabling, which will meets all norms and speed request.
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Network design support software
Špidla, Aleš ; Jeřábek, Jan (referee) ; Pelka, Tomáš (advisor)
The bachelor thesis is aimed at supporting of designing of computer networks. The thesis describes the steps which follows to successful propose of computer network. Furthermore, it discusses errors which should be avoided, the various recommendations from the positioning of devices in the patch panel, to allocating the address space of IP addresses. There is also mentioned three level hierarchy of networks, QoS, problems of VLANs and switches cascade connection. A large part describes the benefits of stackable switches, their inclusion in the network, and then describes the advantages of different kinds of PoE (Power over Ethernet) devices. Also noteworthy is the chapter, which deals with IP networks. It points out how to allocate IP addresses and it also describing the most frequently used method for allocating subnets which is reverse binary method. The last part is devoted to the description of the application, which allows users to learn about different variants of switches, VoIP phones, find out the advantages and disadvantages of different transmission media, or the difference between software or hardware firewall. The output of this application is form, which can serve as network documentation.
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Optimal Design of a Low-Frequency Structural Wiring System
Balák, Dušan ; Slavata, Petr (referee) ; Kadlec, Radim (advisor)
This thesis is concerned with designing and optimizing of a low-frequency structural wiring system in office building. The thesis is divided into two parts, theoretical and practical. Theoretical part is describing factors of designing the low-frequency structural wiring system, with focusing on short-circuits and their consequences on wiring system. Mentioned are optimal economic diameter of electrical cables, purchase and running costs and other factors connected with the optimal designing and protection of electrical devices. In practical part is adjusted, CAD´s system program, assigned a site wiring diagram and allocation of switchboards in the office building. In programs by EATON Elektrotechnika company were developed another parts of project´s documentation. In the Spider program was drew the wiring diagram assigned building and suggested cables and circuit breakers by EATON for correct running in the whole building. In the M-Profil program are designed assigned switchboards and calculated their warming. The motion includes prepared projection documentation, means site wire diagram of the building, schema with evaluations of short-circuits and voltage loss, switchboards design and calculation of their warming.
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Optimization of Company Information Infrastructure.
Luska, Jiří ; Holub, Zdeněk (referee) ; Ondrák, Viktor (advisor)
The thesis discusses the problems of data infrastructure in the company Instalační materiál – Herman s.r.o., which dealing with sale and comlex services in plumbing. The current state of computer networks is generally poor, combines current and older technologies, resulting in problems with the functionality of the sale system. Therefore the company decided to invest in upgrading IT. The goal is to evaluate the current situation and propose a range of optimization to an extent that meets the criteria of the company as a customer
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Using artificial intelligence to monitor the state of the machine
Kubisz, Jan ; Kroupa, Jiří (referee) ; Kovář, Jiří (advisor)
Diploma thesis focus on creation of neural network’s internal structure with goal of creation Artificial Neural Network capable of machine state monitoring and predicting its remaining usefull life. Main goal is creation of algorithm’s and library for design and learning of Artificial Neural Network, and deeper understanding of the problematics in the process, then by utilising existing libraries. Selected method was forward-propagation network with multi-layered perceptron architecture, and backpropagation learning. Achieved results was, that the network was able to determine parts state from vibration measurement and on its basis predict remaining usefull life.
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