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1. Assertion (A): Fault diagnosis and correction is easy in case of star topology.
Reasoning (R): In star topology, multiple nodes are directly connected to the central server.
2. Assertion (A): Extension of network is easy in case of bus topology.
Reasoning (R): In star topology, all nodes are connected to a central cable, called backbone.
3. Assertion (A): Large business, educational institutions connects their different branches in different locations across the
world through WAN.
Reasoning (R): WAN connects computers and other LANs and MANs spread across the world.
Case-based Questions
1. CareTaker is an NGO with its head office at Mumbai and branches located at Gurugram, Kolkata and Madurai. It is planned
to have an Operational Centre at Gurugram that will liaison with the head office and all the branch offices. The NGO has
received a grant from the central government for setting up the network. The physical distances between the branch
offices and the Operational Centre and the number of computers to be installed in each of these branch offices and the
head office are given below. As a network expert, suggest the best possible solutions for the queries raised by the NGO
(questions (a) to (d).
Mumbai Head
Office
Operational
Centre Gurugram
Branch Office
Branch Office Kolkata
Madurai
Distance between various locations in kilometres:
Location Approximate Distance ( in kms)
Mumbai HO to Gurugram Operational Centre 1450
Mumbai HO to Kolkata Branch Office 1690
Mumbai HO to Madurai Branch Office 2690
Gurugram Operational Centre to Kolkata Branch Office 1450
Gurugram Operational Centre to Madurai Branch Office 1810
Madurai Branch Office to Kolkata Branch Office 1720
Number of computers installed at various locations are as follows:
Mumbai HO 2000
Gurugram Operational Office 1200
Kolkata Branch Office 590
Madurai Branch Office 1100
244 Touchpad Informatics Practices-XII

