1401 – 1500 Key Points

1401) The routing of data elements are called bits

1402) Operating system often called as kernel

1403) IPC stands for inter process communication

1404) Many programming errors are detected by the hardware

1405) When a process exists, he operating system must free the disk space used by its memory image

1406) Buffering attempts to keep both CPU and I/O device busy all the time

1407) Software is not an example of file mapping

1408) The most important aspect of job scheduling is the ability to multiprogramming 1409) There are two types of floppy disks

1410) System calls can be grouped into three major categories

1411) “FIFO” stands for first in first out

1412) In the two-level directory structure, each user has its own user file directory 1413) The number of bytes in a page is always a power of 2

1414) A process that does not determinate while the operating system is functionary is called dynamic

1415) The three main types of computer programming languages are machine language, assembly language, high level language

1416) There are 2 types of processor modes

1417) An input device is an electromechanical device that generates data for a computer to read

1418) The first implementation of UNIX was developed at Bell Telephone Laboratories in the early 1970

1419) A connection less protocol is more dynamic

1420) The throughput is a measure of work for processor

1421) COBOL stands for common business oriented language

1422) Reset button is used to do cool booting

1423) In MS-EXCEL the no of rows, no of columns are 16384,256

1424) FOXPRO is a package and programming language

1425) Mostly used date format in computer is MM-DD-YY

1426) Reservation of train ticket uses real time mode of processing

1427) A floppy disk is a thin plastic disc coated with magnetic oxide

1428) In binary addition 1+1 = 1

1429) Universal building blocks of a computer system are NAND & NOR

1430) In COBOL programming characters length per line is 64

1431) In FOXPRO, the maximum fields in a record are 128

1432) QUIT command is used to come out of FOXPRO

1433) Count command is used to count the specified records in a file with or without condition

1434) F1 key is pressed for help in FOXPRO

1435) One Giga byte = 1024 mega bytes

1436) Small scale integration chip contains less than 12 gates

1437) The most common monitor sizes are 14, 15, 17

1438) IBM PC and DOS has BIOS support for 3 LPT ports

1439) EDO stands for external data organizer

1440) The number of wires in IDE Hard Disk cable are 16

1441) If the data transfer rate is 150 k/sec then it is called single speed

1442) A typical buffer for a CD-ROM drives 156 K

1443) The 2.88 M floppy drives have 36 no of sectors

1444) 1 MB is equal to 2 (to the power of 10 KB)

1445) ROM is a primary storage device

1446) The process of loading and starting up DOS is called booting

1447) The Dos Prompt is mainly C:>

1448) C:>ver is used for displaying current version name

1449) Intel 440x “Natoma” is an example for mother board chipset

1450) Direct memory access channels are used by medium speed communication devices

1451) The 486 Sx chip is twice as fast as a 386 Dx with same clock speed

1452) On a 286 or 386 sx system, the extended memory limits 16M

1453) The 385 Dx, 386 CPU have 32 address lines

1454) Shared memory does require 16 K of VMA space

1455) DIMM’s are 168 pin modules

1456) The function of +12V power supple is to run disk drive motors and also cooling fans

1457) SPS generally referred as rechargeable batteries

1458) Parallel interface is not the interfaces that can be used to connect the mouse to the computer

1459) The mouse interrupts usually occurs if the system uses a mouse port

1460) The video adapter BIOS handles communication between the Video Chipset & Video Ram

1461) Pentium pro CPU’s have full of 323, they can track of 44 G of memory in address lines

1462) The processor bus is the communications path way between CPU and immediate support chip

1463) VL-bus can move data 32 bit at a time

1464) A modem attached to system on COM ports

1465) Horizontal scan refers to the speed at which the electron beam across the screen 1466) RGB monitor display 80 column text

1467) When transition changes from negative to positive the head would detect positive voltage spike

1468) Animation means to make still picture, move and talk like in cartoon pictures 1469) Analogues: The use of a system in which the data is of a continuously variable physical quantity such
as voltage or angular person

1470) Animation: A simulation of movement created by displaying a series of pictures or frames

1471) Application means a piece of software designed to meet a specific purpose 1472) Active X is a model for writing programs. Active X technology is used to make interactive Web pages that look and behave like computer programs, rather than static pages. With Active X, users can ask or answer questions, use push buttons, and interact in other ways with the web page

1473) Batch processing is a technique in which a number of similar items or transactions are processed in groups or batches during a machine run

1474) BIS: Bureau of Indian Standards. It is a national organization of India to define standards

1475) Browser is a link between the computer and the internet. It’s actually a program that provides a way to look in the hand interact with all information on the internet. A browser is a client program that uses the Hypertext Transfer Protocol (http) to make requests of Web servers throughout the Internet on behalf of the browser user.

1476) CIO (Chief information officer) : The senior executive in a company responsible for information management and for delivering IT services

1477) Client/server architecture: A type of network in which computer processing is distributed among many individual PCs and a more powerful, central computer clients can share files and retrieve data stored on the server

1478) Collaborative software: Groupware, such as Lotus Notes or Microsoft Exchange

1479) Computer-Aided design: Refers to any computer-enabled method of design also called computer-assisted design.

1480) Commuter: A group of electronic device used for performing multipurpose tasks

1481) Channel: It consists of controller card, interface cable and power supply

1482) CORBA: CORBA is the acronym for Common Object Request Broker Architecture

1483) CBT: Computer based training

1484) Certification: Skills and knowledge assessment process

1485) Computer Crime: The act of stealing, cheating or otherwise defrauding an organization with the use of a computer

1486) Cyber café: Café offering internet browsing facility

1487) Cryptography: Method used to protect privacy and security on the internet 1488) DBMS: An acronym for the database management system. A program that maintains and controls the access to
collection of related information in electronic files

1489) Data: Facts coded and structured for subsequent processing, generally using a computer system

1490) Digital signature: Encrypted signature used for providing security for the messages/data transferred through the internet

1491) Digital computer: A device that manipulates discrete data and performs arithmetic and logic operations on these data

1492) Data transmission: The movement of data from one location of storage to another. If the locations are geographically far away, generally done via satellites.

1493) Disk Mirroring: The data is written on two or more hard disks simultaneously over the same channel

1494) Disk Duple Xing: The data is written on two or more hard disks simultaneously over the different channel

1495) Dumb Terminals: Hardware configuration consisting of a keyboard and monitor that is capable of sending and receiving information but has no memory or processing capabilities.

1496) Download: Process of transferring a file system from one system to another

1497) E-commerce: Business transactions conducted over extranets or the internet

1498) Enterprise, resource planning: An integrated system of operation application combining logistics, production, contract and order management, sales forecasting and financial and HR management

1499) Electronic data interchange (EDI) : Electronic transmission or documents through point to point connections using a set of standard forms, message and data elements, this can be via leased lines private networks or the internet

1500) Data processing: It is a method concerning with the systematic recording, arranging, filing, processing and dissemination of facts of business