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We will send you a file size of L bytes from host A to host B. Suppose the MSS is 536 bytes:
(a) What is the maximum size of the set L such that TCP sequence number does not run out? Remember TCP sequence number field size is 4 bytes.
(b) For L obtained in (a), how long does it take to send the file? Assume that 66 bytes need to be added to each segment for the transport headers, network and data-link before the packet is sent through a link with a speed of 155 Mbps. Ignore flow and congestion host control and assume the sender can transmit data continuously.
If IPSec gives security at network layer, why is it that security mechanisms are still require at layers above IP?
You have taken job with a software user who has contracted previous employer to develop a system for them. You discover that your company's interpretation of requirements is different from interpretation.
Explain in detail how PKCS (Public-Key Cryptography Standard), when combined with the RSA algorithm, can thwart Eve's attempt at discovering the encrypted figure.
You have been hired to aid troubleshoot a network. Users in this customer site have being experiencing intermittent problems.
Illustrate how many protocols and protocol implementations are required to permit all nodes to communicate?
Let RTP session comprising of four users, all of which are sending and receiving packets to same multicast address. Find out RTCP bandwidth will each sender be allocated?
Should Iris have placed CD back at coffee station and forgotten entire thing? Describe why that action would have been ethical or unethical.
A consulting firm has narrowed the choice of programming language to Java and C#. Which language do you think would be more appropriate for this application and why?
Display it via a Web-based interface running on another server. What are security issues that could plague this solution if not attended to?
If you have a class B network and want to divide it into subnets, each with 126 hosts, which subnet mask should you use? What are the four addresses (broadcast and network number) for the network starting at 131.204.18?
Locate two such organizations. For each of the two, identify the need or opportunity that prompted the decision to have a physical presence.
Suppose users share a 1Mbps link. Also suppose each user requires 100Kbps when transmitting, but each user transmits only 20% of the time. When circuit switching is used, how many users can be supported?
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