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7 (a) Arun opened his e-mail and found that his inbox was full of hundreds of (2)
unwanted mails. It took him around two hours to delete these unwanted
mails and find the relevant ones in his inbox. What may be the cause of his
receiving so many unsolicited mails? What can Arun do to prevent this
happening in future?

(b) Assume that 50 employees are working in an organization. Each employee (1)
has been allotted a separate workstation to work. In this way, all computers
are connected through the server and all these workstations are distributed
over two floors. In each floor, all the computers are connected to a switch.
Identify the type of network?

(c) Your friend wishes to install a wireless network in his office. Explain him (1)
the difference between guided and unguided media.

(d) Write the expanded names for the following abbreviated terms used in (2)
Networking and Communications:
(i) CDMA (ii) HTTP (iii) XML (iv) URL

(4)
(e) Multipurpose Public School, Bangluru is Setting up the network
between its Different Wings of school campus. There are 4
wings
namedasSENIOR(S),JUNIOR(J),ADMIN(A)andHOSTEL(H).

Multipurpose Public School, Bangluru

JUNIOR
SENIOR

ADMIN HOSTEL

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