BCS-011 : COMPUTER BASICS AND P C SOFTWARE Time : 3 hours Maximum Marks : 100 Weightage : 75%
Note : Question number 1 is compulsory and carries 40 marks. Attempt any three questions from the rest. (a) Convert the following hexadecimal number to equivalent binary and decimal : (i) (ii) (b) (51)16 (DA)16 5 4
How is the access time on a disk is defined ? Explain each of the component of access time with the help of an example. Explain the basic structure of a computer system ? With the help of a diagram . A personal computer has a component called motherboard. How is motherboard related to the basic computer structure ?
List five facilities that are provided by an operating system to a user or to a program. Draw a flow chart to add integer between 2 to (n+1) where n>2. Explain the terms : Subroutine and function with the help of an example. Consider two IP addresses 160. 10. 11. 25 160. 10. 12. 35 Do they belong to the same network , if (i) The subnet mask is 255.255.0.0 (ii) The subnet mask is 255.255.255.0 Justify your answer. (h) What is a Wide Area Network (WAN) ? What are the characteristics of WAN ? How are they different from LANs ? Is Internet a WAN ? Justify your answer. What is the need of memory hierarchy in a computer system ? Explain with the help of various trade offs like cost, speed, size etc. What is perverse software ? List various types of perverse software. Give four ways to counter perverse software. What are cookies in the context of Browser software ? Are cookies bad ? Explain. List four precautions for safe browsing. BCS-011 2 7
(a) Compare and contrast the characteristics of the following : (i) (ii) (b) Dot matrix printer versus Laser printer Cathode ray tube monitors versus liquid crystal display monitors.