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Question (a) A CRC is constructed to generate a 4-bit FCS for an 11-bit message. The divisor polynomial is X4 + X3 + 1
(i) Encode the data bit sequence 00111011001 using polynomial division and give the code word.
(ii) Assume that 7th MSB in the data bit sequence above gets corrupted during transmission, show how the detection algorithm detects the error.
Question (b) What is the difference between Synchronous TDM and Statistical TDM?
(c) In respect to HDLC:
(i) State the three data transfer modes of operation.(ii) Give the structure of generic HDLC frame.(iii) Explain why HDLC uses 'bit stuffing'.
Question (d) With the aid of sketches, explain the difference between the following two transmission modes used with optical fibre:
(i) Graded-index Multi-mode and
(ii) Mono-mode.
Question (a) In relation to a TCP segment structure, provide the fields responsible for: i. Connection Management ii. Flow Control iii. Error Control iv. Reliable, in-order
RING topology all computers are connected in loop. A ring topology is a network topology in which every node connects to exactly two other devices, forming a single continuous pa
Symmetric Encryption This encryption method makes use of same “secret key” to encipher and decipher the message and it is termed as private key encryption. This type of encrypti
Describe the important features of application layer. The features of the application layer are as follows. 1. Efficient User Interface Design is explained below: Appli
(a) Which PKI (Public Key Infrastructure) model is typically favored by business organization? (b) Give one possible use of the "extensions" field of an X.509 certificate
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
explaain it?
implementing password policy in organisation
QUESTION 1: a) Differentiate between a routing protocol and a routed protocol. b) Describe any three design goals of Routing protocols. c) Lists some of the features shared
Explain TCP congestion control.
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