Computer Questions Answers for Competitive Exams Set-15
||Computer Questions and Answers for Competitive Exams Set-15||Computer Questions Answers for JOA IT,Computer operator & other exams||important computer related question answer||
1. What is the size of Floppy Diskette which is used normally ?
(A) 3½”
(B) 5″
(C) 4″
(D) 3″
Explanation:-A floppy disk is a thin magnetic-coated disk contained in a flexible or semi-rigid protective jacket. Data is stored in tracks and sectors. The floppy disks are usually 3.5″ in size. However, older floppy disks may be in use; these would be 5.25″ in size. Double sided high density 3.5″ disks can hold 1.44 Mb of data.
2. A compact disc (CD) is a data storage system of the type :
(A) Magnetic
(B) Optical
(C) Electrical
(D) Electromechanical
Explanation:-The Compact Disc, or CD for short, is an optical disc used to store digital data. It was originally developed to store and play back sound recordings only, but the format was later adapted for storage of data (CD-ROM). Standard CDs have a diameter of 12 mm (4.7 in) and can hold up to 80 minutes of uncompressed audio or 700 MB (700 × 10 6 bytes) of data. The encoding material sits atop a thicker substrate (usually polycarbonate) which makes up the bulk of the disc and forms a dust defocusing layer. The encoding pattern follows a continuous, spiral path covering the entire disc surface and extending from the innermost track to the outermost track. The data is stored on the disc with a laser or stamping machine.
3. Where is the National Institute of Excellence in the field of Information Technology and Allied Sciences proposed to be set up?
(A) Bangalore
(B) Hyderabad
(C) Pune
(D) Allahabad
Explanation:-The Indian Institute of Information Technology Allahabad (IIIT-A) was established in 1999, as a center of excellence in Information Technology and allied areas. The mission of IIIT, Allahabad is to be a unique and world class nucleating “Apex Center of Excellence” in the area of Information Technology and Allied Sciences, so as to enhance India’s Technological strength in IT and for become a pace-setting institution for other similar institutes to be established in the future. IIIT seeks to derive its strength from a linkage with sound Indian traditions of centuries past, and sets out to create knowledge-based resources in regional languages.
4. Which of the following circuit is used as ‘Memory device’ in computers ?
(A) Rectifier
(B) Flip-Flop
(C) Comparator
(D) Attenuator
Explanation:-A flip-flop is a circuit that has two stable states and can be used to store state information. The circuit can be made to change state by signals applied to one or more control inputs and will have one or two outputs. It is the basic storage element in sequential logic. Flip-flops and latches are a fundamental building block of digital electronics systems used in computers, communications, and many other types of systems
5. Which of the following is not a role assigned to Science and Technology Entrepreneurship Parks ?
(A) Training
(B) Testing and Calibration
(C) Technology development
(D) Raising funds for entre-preneurs
Explanation:-The Science and Technology Entrepreneurs’ Park (STEP) was established at IIT Kharagpur in Dec. 1986 with financial support from DST New Delhi, DST West Bengal, IDBI, IFCI, ICICI. Approval was accorded by DST on Aug.14, 1987.the role of training, Testing and Calibration and Technology development has been assigned to it
6. Which of the following is not reckoned as a ‘value added’ telecommunication service?
(A) Electronic Mail
(B) STD
(C) FAX
(D) Radio-Paging Service
Explanation:-Value-added telecommunication services are telecommunications for which suppliers “add value” to the customer’s information by enhancing its form or content or by providing for its storage and retrieval. FAX is not considered to be a Value-added telecommunication services.
7. The basic application of an ‘AND’ gate in computers is for:
(A) addition
(B) subtraction
(C) multiplication
(D) division
Explanation:-The ‘AND’ gate in computers has basic application of multiplication. It has two or more inputs and one output. An ‘AND’ gate produces an output of 1 if all the inputs are 1 if any of the inputs is zero then it produces an output of zero.
8. Who developed the concept of email ?
(A) Bill Gates
(B) Arthur C. Clark
(C) Ray Tomlinson
(D) Sabir Bhatia
Explanation:-Ray Tomlinson is credited with developing the first viable e-mail program in 1971 for use on the ARPANET. Although text messages were occasionally sent over the network, Tomlinson created the first program. it is a method of exchanging digital messages from an author to one or more recipients. Modern email operates across the Internet or other computer networks. Some early email systems required that the author and the recipient both be online at the same time, in common with instant messaging. Today’s email systems are based on a store-and-forward model.
9. What is an organisation’s introductory web page called?
(A) Portal
(B) Vortal
(C) Homepage
(D) Web site
Explanation:-The introductory web page of an organisation is called website. A website (also called an Internet site) is a group of HTML files connected by hypertext links and stored on a web server, i.e. a computer that hosts webpages and is permanently connected to the Internet.
10. The first computer language developed was
(A) COBOL
(B) BASIC
(C) FORTRAN
(D) PASCAL
Explanation:-The first programming languages predate the modern computer. At first, the languages were codes. The first modern programming language was FORTRAN (1955), the “FORMULA TRANSLATOR”, invented by John Backus, then COBOL,(1959) the Common Business Oriented Language, was used. Then PASCAL and BASIC came into existence.
