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a) determine the RTT (round trip time) between a client requesting a web page of 1024 bytes in size from an internal web server on a 100 Base-T Ethernet. Assume a one-way propagation delay of 10 s and that the request and header response messages are of negligible size and all other delays are zero.
b) Consider the arrangement of ‘self-learning' bridges shown in the figure below. Assuming all are initially empty, give the forwarding tables for each of the bridges W, X, Y and Z after the following transmissions: Host A sends to Host C, Host D sends to Host B, and Host C
c) Give an example of a transmitted byte-stream in Basic Encoding Rule (BER) by using the following data type declarations and its corresponding instances:
nickname ::= OCTET STRING {nickname, "King Kenny"} number ::= INTEGER {number, 7} active ::= BOOLEAN [0=NO, 1=YES] {inactive, 0}
d) i) Give the structure of typical SNMPv1 get and trap messages. ii) Which MODULE IDENTITY does this OBJECT ID belong to: 1.3.6.1.2.1.5.1
Normal 0 false false false EN-US X-NONE X-NONE
Guided Media These are those that give a conduit from one machine to another that add twisted-pair, fiber-optic cable and coaxial cable. A signal traveling along any of these
IP DATAGRAM Various options can be included to IP header, e.g., source route, record route and timestamp. Header with no function has H. LEN field value 5; data starts immedia
Identify Possible Controls For each threat and linked vulnerabilities which have residual risk, create primary list of control ideas. Residual risk is the risk which remains to
Internet Protocol IP Gives computer-to-computer communication. Host and receiver addresses are computers. This is also known machine-to-machine communication.
Question: (a) Describe how IPSec provides data source authentication. (b) Which protocol can be used to provide limited traffic analysis confidentiality? Why is it "limite
(a) Briefly explain the following security goals provided by cryptography: confidentiality, authentication, integrity and non-repudiation. (b) State Kerckhoff's Princip
Question : An aircraft manufacturing company is considering linking the network of one of its offices to the network of its Headquarter using either xDSL or ISDN. i. Compare
explaain it?
CYCLIC REDUNDANCY CHECK (CRC) To activate a network system to check move error without increasing the amount of information in every packet another most successful method is m
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