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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.
Discuss how developers should apply the following countermeasures to improve the security of their code:
CRC can detect the following errors better than check sums. a) Vertical errors b) Burst errors a) VERTICAL ERRORS: This kind of error happens due to a hardware fai
(a) Explain the importance of the Euler Totient function in Cryptography. Calculate Euler Totient function value, φ(1280). (b) Explain the role of the Authentication Server (
Problem (a) Distinguish between passive and active attacks. (b) Give two reasons why it is important to organise security awareness programs for users. (c) Describe how
FRAGMENTATION Fragmentation information is kept in different extension header. Every fragment has base header and fragmentation header. Whole datagram including original hea
Websphere Administrator: Working as Websphere Administrator in the department called DART (Database Architecture Re-Engineering and Tuning). The major responsibilities are t
what is hacking
Problem (a) Below is a capture of an Ethernet II frame which contains an IPv4 packet and a TCP segment. The second screen capture is from the data portion of the frame.
every time i connect to WIFI the UC goes directly to 100% then i doesn''t want to come down. what shall i do ?
Question (a) Name 3 popular electronic mail access protocols? (b) i. What is DNS? ii. Briefly, describe what it does and how it works? iii. Why does DNS use a dist
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