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Keeping the IV secret in OFB mode does not make an exhaustive key search more complex. Describe how we can perform a brute-force attack with unknown IV. What are the requirements regarding plaintext and ciphertext?
If IPSec gives security at network layer, why is it that security mechanisms are still require at layers above IP?
Assuming that switches user store-and-forward packet switching, what is the total end-to-end delay to send a packet of length L? (Ignore queuing, propagation delay, and processing delay.)
PCs connected to the two wall jacks work fine, but the three connected to the switch refuse to communicate with the network. What could be wrong and what should she try next?
Site networks are connected to form wide area network using frame relay technology. Webservers located at each site provide access to information resources.
Describe the effects of spyware and adware. How has spyware and adware influenced public's confidence in security of the Internet?
Explain each layer of OSI model and how it associates to network in 200 to 300 words. Your response should include answers to the following:o On which layers of OSI model do WAN protocols operate?
Explain the three instruction formats which are used in MIPS. What limitations do they put on form and kind of instruction which are used in te ISA?
Describe the concept of subnetting and concept of subnet masks. Why do we utilize subnetting? How do we know which bits are used to recognize network?
While working in an economy, it has a separate identity but cannot operate insolently.
A frame rate of 30 fps, and 8 bits for quantisation of each pixel. What is the required bandwidth for the transmission of the uncompressed video stream?
What kind of network crimes may use P2P networks? Find the most challenging crimes that could be based on P2P networks and write a report on how to do forensic investigations on these crimes.
You have been hired to give advice about use of cryptography to the developer of new two products within a company. Group A is developing a product which will encrypt each user's data before storing it on the hard disk,
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