Course Code : BCS-011
Course Title : Computer Basics and PC Software
Assignment Number : BCA(1)-011/Assignment/14-15
Maximum Marks : 100
Weightage : 25%
Last Date of Submission : 15th October, 2014/15th April, 2015
This assignment has three questions of 80 marks (each section of a question carries same marks).Answer all the questions. Rest 20 marks are for viva voce. You may use illustrations and diagrams to enhance explanations. Please go through the guidelines regarding assignments given in the Programme Guide for the format of presentation. Please give precise answers. The word limit for each part is 200 words.
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Question 1: (Covers Block 1) (7×4=28 Marks)
a) Explain the terms: transistor, integrated circuit and von Neumann Architecture in the context of a Computer. Have the developments of very large scale integration affected the von Neumann Architecture? Explain your answer.
b) In the context of memory organsiation, what tradeoff is faced by a computer? Explain the characteristics of primary, magnetic and optical memories. Differentiate between sequential and random access.
c) Convert the following numbers as stated
(i) Decimal 117.0125 to binary
(ii) Decimal 2459 to hexadecimal
(iii) Character X and x to ASCII and Unicode
(iv) Decimal 3456 to binary
d) What is the need of ports in a computer system? What is the purpose of Universal Serial Bus? Name the devices that can be connected using Universal Serial Bus.
e) Differentiate between the following:
(i) Static RAM vs Dynamic RAM
(ii) Seek time vs Latency time
f) Explain the following terms:
(i) Resolution of monitors
(ii) Liquid Crystal Displays
(iii) Line printers
(iv) Workstation
g) What are the uses of following Utility Software:
(i) Disk checkers
(ii) System restore
(iii) Disk Defragmenter
(iv) Disk Management
Question 2: (Covers Block 2) (7×4=28 Marks)
a) Why are different software architectures developed? Explain the concept of cloud computing giving its advantages and disadvantages.
b) Explain the Structured and modular software design paradigm with the help of an example.
How is a service (as in service oriented software paradigm) different than an object? Explain with the help of an example.
c) Why do you need an operating system in a computer? Explain the file management, memory management and process control management in an Operating system. List the user level commands of any operating system for file management.
d) Draw a flow chart of a program that adds odd numbers up to 100.
e) Explain the terms: variable, data type, one dimensional array and subroutine with the help of an example each.
f) Explain the uses and/or facilities provided by the following software:
(i) E-mail
(ii) Database Management System
(iii)Spreadsheet
(iv) Word Processing
g) Define the following terms:
(i) Open Source
(ii) Open Source development model
(iii)System Software
(iv) Compiler
(v) Device Driver
(vi) Linker
(vii) Anti-virus software
(viii) Diagnostic program
Question 3: (Covers Block 3) (6×4=24 Marks)
(a) What is a data communication system? Explain the characteristics of various communication
media.
(b) Compare and contrast the characteristics of LAN, MAN and WAN.
(c) Explain the following terms in the context of Internet.
(i) TCP
(ii) IP Address
(iii) URL
(iv) DNS
(v) Subnet mask
(vi) Gateway
(vii) Switch
(viii) HTTP
(d) Explain the issues relating to security in the context of a browser. List and explain the actions
that are performed by a search engine on the web.
(e) Explain the features of e-learning software. What at the security threats faced during elearning?
(f) Explain the following in the context of Internet, giving there features and uses:
(i) Blog
(ii) Social networking
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