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Q1) Suppose nodes A and Bare on the same 10 Mbps Ethernet bus, and the propagation delay between the two nodes is 325 bit times. Suppose node A begins transmitting a frame and, before it finishes, node B begins transmitting a frame. Can A finish transmitting before it detects that B has transmitted? Why or why not? If the answer is yes, then A incorrectly believes that its frame was successfully transmitted without a collision. Hint: Suppose at time t = 0 bit times, A begins transmitting a frame. In the worst case, A transmits a minimum-sized frame of 512 + 64 bit times. So A would finish transmitting the frame at t = 512 + 64 bit times. Thus, the answer is no, if B 's signal reaches A before bit time t = 512 + 64 bits. In the worst case, when does B's signal reach A?
Access control is handled at ____ layer during routing processrouter consults a list of rules before forwarding incoming packet to determine whether a packet meeting certain criteria.
From RFC 1034, DNS domain names are composed of labels. Are there any labels which nodes are not allowed to allot to their data? If so, what are they?
Include the devices and type of network circuits you would use. You will need to make some assumptions, so be sure to document your assumptions and explain why you have designed the network in this way.
Users are familiar with some network services like HTTP (Hypertext Transport Protocol) - Web, NNTP (Network News Transport Protocol). How do they figure into organizational security?
It also help business to use the best features of cloud computing like, elastic scalability and outsourcing. what are your toughts on the above statement? Do you agree or disagree?
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.)
As security manager at XYZ Corporation, you are responsible for managing intrusion detection environment. If you were given the ability to build the environment from scratch, would you use network based IDS, host based IDS, or a combination?
Analyze the result we obtained regarding the HTTP page response time. Collect four other statistics, of your choice, and rerun the simulation of the Simple and the Busy network scenarios.
Assume that airliner carries 10,000 kg of those floppies at speed of 1000 km/h over distance of 5000 km. Compute data transmission rate in bits per second of this system?
A crypto device encrypts each message into 20 bits of ciphertext.What is the entropy of the plaintext message? What is the entropy of the ciphertext message?
You have been asked to sketch a LAN with operation over a distance of about 100m.
Suppose you are working for a small business that has outgrown its existing building. What technology will you recommend to internetwork the two buildings?
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