Please refer to Figure 4 of Unit 1 of Block 1 on page 11 of the Instruction execution example. Assuming a similar machine is to be used for the execution of the following three consecutive instructions:

LOAD A; Load the content of Memory location A into the Accumulator Register.

ADD B; Add the content of memory location B to Accumulator Register.

STOR C; Stores the content of the Accumulator register to memory location C.

However, this machine is different from the example in Figure 4 in the following ways:

Each memory word of this new machine is of 32 bits length. 

Each instruction is of length 32 bits with 12 bits for operation code (opcode) and 20 bits for specifying one direct operand. The size of operand is 32 bits.

The Main Memory of the machine is of size 220 words.

The three consecutive instructions are placed starting from memory location (11FFE); operand A is at location (2FFFF) and contains a value (111AB4C1)h, Operand B is at location (30000) and contains a value (AAA1A1FE) and operand C is at location (30001) and contains a value

The AC, IR, MAR and MBR registers are of size 32 bits, whereas PC register is of size 20 bits. The initial content of the PC register is (11FFE)

Explain the following in the context of Internet and its applications, giving their features and uses:

(i) Online Education

(ii) eCommerce

Describe the process of creating a web email account. What are the different components of a mail message? Explain with the help of a diagram.

What are the different features of a browser? If you want to perform Online Banking Transactions, what precautions will you take before performing a transaction?

What is Internet? What are the major protocols used on Internet? What is an IP address? How can an IP address be related to a web address? Explain with the help of an example.

Four branch offices of an organisation are located in four major cities of a vast country. Explain the characteristics of the network that will be needed for every branch office. All the four branch offices network should also be connected by another network. Explain the characteristics of this network also.

Explain the characteristics of any two guided and any two unguided channels for data transmission.

Database and Database Management System

Use of functions and Macros

Tools for program development

Development Model for Open Source Software

What are the phases of project development in which project management software can help. Explain with the help of examples.

List the elements of a programming language. Explain the terms data type, expression, assignment; and logical, relational and equality operators with the help of an example each.

Draw a flow chart of a program that adds N even numbers starting from 1. The value of N should be input by the user.

Explain the differences between procedural programming and object oriented programming with the help of one example program of each.

Consider that you have to run several computer programs simultaneously on a computer. Each program takes input from a file and output information on a printer. How does different components of an Operating system (like memory management, I/O management, Process management, file system and user interface) will help in execution of these programs.

Why do you need virus detection software? What are their drawbacks? What are the techniques to identify a virus? List any 4 latest virus for desktop systems.

What are the uses of following software/ utility:

(i) Data Compression Utility

(ii) Media Player

(iii) Disk Defragmenter

(iv) Disk checker

What are the uses of various components of motherboard of a computer? List at least four output devices and ports to which these devices can be connected. Explain the characteristics of these output devices and ports.

A 2.5 inch diameter disk has 8 platters with each platter having two data recording surfaces, each platter on disk has 4084 tracks, each track has 400 sectors and one sector can store 1 MB of data. Calculate the storage capacity of this disk in Bytes. If this disk has a seek time of 2 milli-seconds and rotates at the speed of 6000 rpm, find the Access time for the disk. Make suitable assumptions, if any.