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Legal Aspects of Fighting Cybercrime
Dostál, Otto ; Vlček,, Martin (referee) ; Šárek, Milan (referee) ; Hajný, Jan (advisor)
The thesis deals with the topic of computer crime. Foremost, it demonstrates on an example of the operation of a medical image information processing system some selected aspects of this issue. It shows that it is always necessary to monitor the current state of the technical knowledge at the time, but also the need of addressing the issue within the corresponding legal limits. The thesis presents criminal law reality as a complex system. The links between different parts of the system are examined, and possible shortcomings are considered. The legal instruments and legal limits of the procedures that can be used against cybercrime are evaluated. The thesis focuses especially on the issue of obtaining evidence under the Czech Criminal Procedure Code. It presents a proposal on how to understand individual procedural legal institutes and for what purposes and how to use them. Consequently it suggests legal procedures for specific selected practical situations.
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Optical switching and traffic grooming
Foldyna, Petr ; Havliš, Ondřej (referee) ; Horváth, Tomáš (advisor)
This bachelor thesis is about problematics of optimalization wavelenght usage in optical networks. First part theoreticaly explains optical networks and problems when using them, switching in optical networks and traffic grooming. In second part mathematical equations of given problems are realized and also simulations using GLPK are realized. From results of simulation resolutions are given and usage of methods in real networks is explained.
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Media Converters and Optical Switches
Branč, Martin ; Reichert, Pavel (referee) ; Münster, Petr (advisor)
This Master´s thesis provides an overview of wired networks, its parameters, used standards and the deployment possibilities. Moreover, it includes the overall overview about optical networks, its parameters, maximum bandwidth, reachable distances as well as the advantages and disadvantages in comparition with wired networks. The project describes network elements which are used in the optical access network such as media convertors, optical switches etc. The practical part includes results of testing of the network devices in various scenarios. To get a comparable result, the real throughput, the power of each device and compatibility of devices from different producers were measured. At the end I have suggested few scenarios with the usage of optical switches and media convertors for extension of the current optical network. The calculation of costs for building and operation of the network is also included.
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Optical Amplifiers
Mlejnek, Zbyněk ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
Optical amplifiers has sparked a revolution in the telecommunications industry during th last ten years. Optical amplifiers are devices that amplifies an optical signal directly, without the need to first convert it to an electrical signal. Its ability to provide low-noise amplification over a range of wavelengths, fortuitously correspoding to the low-loss of silica fiber, has made optical networks economically attractive
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Resilient fiber optic infrastructure
Spurný, Vladimír ; Kubánková, Anna (referee) ; Münster, Petr (advisor)
Optical networks are often mistaken for being secure, but there are ways to eavesdrop on the signal in an optical fiber without the user noticing. Cryptography is used to protect data, but quantum computing may threaten current encryption methods in the future. Misuse of active and passive elements affect the security of the optical infrastructure. The monitoring ports of active devices and the physical properties of optical fibre s pose risks for data leakage and eavesdropping. This work focuses on information transmission in optical fibers, data leakage risk analysis, and testbed design for measuring data signal interference. And then verifies the functionality of the workstation on a high-speed coherent transmission system.
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Firmware for CzechLight optical measurement and calibration device
Oboňová, Ivona ; Kratochvíl, Miroslav (advisor) ; Aschenbrenner, Vojtěch (referee)
The goal of this thesis is to implement firmware for the Optical Mea- surement and Calibration Device, which was designed and constructed in CESNET. The purpose of the device is to simplify the calibration of various fiber-optical networking devices, used in CESNET infrastructure. The thesis includes an overview of the internal structure and communication interfaces within the device, which is then used for designing and implementing the firmware. The results are demonstrated on created unit tests, implemented simulator and then on realistic hardware, by running the measurement on an existing optical component. The produced firmware will serve as a basis for the development of more advanced devices in CESNET. 1
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Legal Aspects of Fighting Cybercrime
Dostál, Otto ; Vlček,, Martin (referee) ; Šárek, Milan (referee) ; Hajný, Jan (advisor)
The thesis deals with the topic of computer crime. Foremost, it demonstrates on an example of the operation of a medical image information processing system some selected aspects of this issue. It shows that it is always necessary to monitor the current state of the technical knowledge at the time, but also the need of addressing the issue within the corresponding legal limits. The thesis presents criminal law reality as a complex system. The links between different parts of the system are examined, and possible shortcomings are considered. The legal instruments and legal limits of the procedures that can be used against cybercrime are evaluated. The thesis focuses especially on the issue of obtaining evidence under the Czech Criminal Procedure Code. It presents a proposal on how to understand individual procedural legal institutes and for what purposes and how to use them. Consequently it suggests legal procedures for specific selected practical situations.
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Firmware for CzechLight optical measurement and calibration device
Oboňová, Ivona ; Kratochvíl, Miroslav (advisor) ; Aschenbrenner, Vojtěch (referee)
The goal of this thesis is to implement firmware for the Optical Measurement and Calibration Device, which was designed and constructed in CESNET. The purpose of the device is to simplify the calibration of various fibre-optical networking devices, used in CESNET infrastructure. The thesis includes an overview of the internal structure and communication interfaces within the device, which is than used for designing and implementing the firmware. The results are demonstrated on realistic hardware, by running the measurement on an existing optical component. The produced firmware will serve as a basis for the development of more advanced devices in CESNET.
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Portfolio of professional development of Filip Zajíček
Zajíček, Filip ; Duschinská, Karolina (advisor) ; Čapek Adamec, Martin (referee)
This bachelor work is concerned with motivation factors which have an influence on attractiveness of apprenticeship and in general a manual works and connect it with social, biological and economic factors. It place emphasis on the root of the trouble included social one, that resulted to an attractiveness decrease. It present overview of didactic methods with emphasis on their common characteristics and stability also. Another part of this work present a specific example of teaching result's dependency on teaching method's choice.
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Optical switching and traffic grooming
Foldyna, Petr ; Havliš, Ondřej (referee) ; Horváth, Tomáš (advisor)
This bachelor thesis is about problematics of optimalization wavelenght usage in optical networks. First part theoreticaly explains optical networks and problems when using them, switching in optical networks and traffic grooming. In second part mathematical equations of given problems are realized and also simulations using GLPK are realized. From results of simulation resolutions are given and usage of methods in real networks is explained.
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