2019 NECO COMPUTER ANSWER

2019 NECO COMPUTER ANSWERS ===================================== COMPUTER-OBJ! 1BBEAEAADEC 11ACCEEADAAE 21EBAEEAEECA 31ECEEEEEEAA 41CEDEBEABDA 51DABBCBEABB ===================================== *ESSAY/THEORY* ______________________ *Number 1* (1a) *(Please Tabulate)* -Web address is the URL of your web page while Email is used to send electronic messages to each other using computer networks. -Email you can always receives electronic mails while web address is not used to receive any mails sent to you. -The email address is oftenly used in lower case while websites or web address are written in mixed letters. -Example of Web address www.google.com While Example of Email address Profodumodu@gmail.com ===================================== *Number 2* (2ai) master file: Master file is a computer file that is used in collection of records pertaining to one of the main subjects of an information system, such as customers, employees, products and vendors. Master files contain descriptive data, such as name and address, as well as summary information, such as amount due and year-to-date sales. (2aii) Transaction file : transaction file is a computer file used to hold data during transaction processing. The file is later used to update the master file and audit daily, weekly or monthly transactions. For example in a busy supermarket, daily sales are recorded on a transaction file and later used to update the stock file. The file is also used by the management to check on the daily or periodic transactions. (2bi) (i)STP (Shielded twisted pair) is a twisted pair cable enclosed in foil or mesh shield. While UTP (Unshielded twisted pair) is a cable with wires that are twisted together. (ii)In Shielded twisted pair Installation of cables is difficult comparatively. While In Unshielded twisted pair, Easily installed as cables are smaller, lighter, and flexible. ===================================== *Number 3* (3ai) computer keyboard is a typewriter-style device which uses an arrangement of buttons or keys to act as mechanical levers or electronic (3aii) (i)Function Keys Example; F1 is used in many Windows programs to open the "help" menu (ii)Alphanumeric Keys Example; number sign." (iii)Punctuation Keys Example; "comma key," (iv)Navigation Keys Example; one pointing up, one pointing down, one pointing right and one pointing left. (3bi) Broadcast in communication system is a track within mass communication that pertains to video and audio content for use on a variety of platforms. (3bii) (i)Internet broadcasting ; this is a means of advertising on the internet has become increasingly popular as you can advertise to your target audience. Space can be bought on websites that the target customers would use and data can be collected about how many people clicked on the ad. (ii)TV broadcasting; this means of broadcast on television provides us with the highest volume of electronic media advertising. There are hundreds of advertisements shown on each channel per day and some slots are sold for millions to the advertisers as they will have such a high audience to watch their ad. ===================================== *Number 4* (4bi) Computer simulation is the reproduction of the behavior of a system using a computer to simulate the outcomes of a mathematical model associated with said system. (4bii) i). In manufacturing, the use of computer simulation has led to significant benefits: risk reduction, greater understanding, operating cost reduction, lead time reduction, faster plant changes, and capital cost reduction. ii).With the development of mechanics and computer technology, computer simulation has become an important tool in the structure analysis and design. (5biii) Hard booting is the process of restarting a computer manually, physically or using any other method besides restarting it from the operating system controls. This allows a user to restart a computer, which is usually done when the operating system or software functions are not responding. - Soft booting is when the system restarts without the need to interrupt the power. ===================================== *Number 5* (5ai) i) RIOS - RIOS radio interoperability systems combine radios, phones, computers, VoIP and video assets within an all-in-one interface designed for interoperable group communications ii) BIOS - a set of computer instructions in firmware which control input and output operations iii) Expansion Card - circuit board that can be inserted in a computer to give extra facilities or memory. iv),(Power-On Self-Test) is the diagnostic testing sequence that a computer's basic input/output system (or "starting program") runs to determine if the computer keyboard, random access memory, disk drives, and other hardware are working correctly. (5bi) loading... (5bii) loading... 5biii) ===================================== *Number 6* (6ai) Pick 2 input: getting data and commands into the computer.output: getting your results out of the computer.arithmetic: performing mathematical calculations on your data.conditional: testing to see if a condition is true or false. More Loading....

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