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QUESTION
(a) FTP is a protocol used for the delivery of files across networks. Explain how FTP works (support your answer with a diagram).
(b) How does TCP perform the given functions?
i. Flow Control. ii. Congestion Control. iii. Error/loss recovery
(c) Using state diagrams, illustrate the following:
i. Lost Data ii. Premature Timeout
(d) Explain the differences between IMAP and POP3 protocols used for the functioning of E-Mail systems.
(e) For the network shown, use the Distance Vector Routing Algorithm to determine the least cost route from A to all other nodes.
Write down the significance of the syntax conversion . Syntax Conversion is described below: Syntax conversion is a significant function carried out in the presentation layer. I
(a) An opponent is using RSA with the public key {e=53, n=77}. You intercept the ciphertext C=10. (All values on this problem, including the ciphertext and the cleartext, are nume
"Using the CNSS Model, examine each of the cells and write a brief statement on how you would address the components respesented in that cell"
Network security has become much more complex than ever before. New types and sources of network security threats, always-on high-speed Internet connections, wireless networking, a
(a) Mention the five main security services. (b) What is a passive attack? Give an example of passive attack? (c) What four types of active attacks and mention their respecti
FRAGMENTATION Fragmentation information is kept in different extension header. Every fragment has base header and fragmentation header. Whole datagram including original hea
Ethernet is a commonly used LAN technology. It was discovered at EXROX PARC(Palo Alto Research Center) in 1970s.Xerox, Intel and Digital described it in a standard so it is also kn
Deploying Host-Based IDSs -Proper implementation of HIDSs can be painstaking and time-consuming task .The process of deployment begins with implementing most critical systems fi
Enterprise Information Security Policy (EISP) EISP also known as security policy directly supports the mission of the organization and sets the strategic direction, scope, and t
Question : (a) What do you meant by the term "Bastion Host"? What is its use? (b) "Hostile" Java applets will do undesirable actions. Mention two problems caused by Hosti
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